Provided by: libvirt-clients_4.0.0-1ubuntu8.21_amd64 bug

NAME

       virsh - management user interface

SYNOPSIS

       virsh [OPTION]... [COMMAND_STRING]

       virsh [OPTION]... COMMAND [ARG]...

DESCRIPTION

       The virsh program is the main interface for managing virsh guest domains. The program can
       be used to create, pause, and shutdown domains. It can also be used to list current
       domains. Libvirt is a C toolkit to interact with the virtualization capabilities of recent
       versions of Linux (and other OSes). It is free software available under the GNU Lesser
       General Public License. Virtualization of the Linux Operating System means the ability to
       run multiple instances of Operating Systems concurrently on a single hardware system where
       the basic resources are driven by a Linux instance. The library aims at providing a long
       term stable C API.  It currently supports Xen, QEMU, KVM, LXC, OpenVZ, VirtualBox and
       VMware ESX.

       The basic structure of most virsh usage is:

         virsh [OPTION]... <command> <domain> [ARG]...

       Where command is one of the commands listed below; domain is the numeric domain id, or the
       domain name, or the domain UUID; and ARGS are command specific options.  There are a few
       exceptions to this rule in the cases where the command in question acts on all domains,
       the entire machine, or directly on the xen hypervisor.  Those exceptions will be clear for
       each of those commands.  Note: it is permissible to give numeric names to domains,
       however, doing so will result in a domain that can only be identified by domain id. In
       other words, if a numeric value is supplied it will be interpreted as a domain id, not as
       a name.

       The virsh program can be used either to run one COMMAND by giving the command and its
       arguments on the shell command line, or a COMMAND_STRING which is a single shell argument
       consisting of multiple COMMAND actions and their arguments joined with whitespace, and
       separated by semicolons between commands.  Within COMMAND_STRING, virsh understands the
       same single, double, and backslash escapes as the shell, although you must add another
       layer of shell escaping in creating the single shell argument.  If no command is given in
       the command line, virsh will then start a minimal interpreter waiting for your commands,
       and the quit command will then exit the program.

       The virsh program understands the following OPTIONS.

       -c, --connect URI
           Connect to the specified URI, as if by the connect command, instead of the default
           connection.

       -d, --debug LEVEL
           Enable debug messages at integer LEVEL and above.  LEVEL can range from 0 to 4
           (default).  See the documentation of VIRSH_DEBUG environment variable below for the
           description of each LEVEL.

       -e, --escape string
           Set alternative escape sequence for console command. By default, telnet's ^] is used.
           Allowed characters when using hat notation are: alphabetic character, @, [, ], \, ^,
           _.

       -h, --help
           Ignore all other arguments, and behave as if the help command were given instead.

       -k, --keepalive-interval INTERVAL
           Set an INTERVAL (in seconds) for sending keepalive messages to check whether
           connection to the server is still alive.  Setting the interval to 0 disables client
           keepalive mechanism.

       -K, --keepalive-count COUNT
           Set a number of times keepalive message can be sent without getting an answer from the
           server without marking the connection dead.  There is no effect to this setting in
           case the INTERVAL is set to 0.

       -l, --log FILE
           Output logging details to FILE.

       -q, --quiet
           Avoid extra informational messages.

       -r, --readonly
           Make the initial connection read-only, as if by the --readonly option of the connect
           command.

       -t, --timing
           Output elapsed time information for each command.

       -v, --version[=short]
           Ignore all other arguments, and prints the version of the libvirt library virsh is
           coming from

       -V, --version=long
           Ignore all other arguments, and prints the version of the libvirt library virsh is
           coming from and which options and driver are compiled in.

NOTES

       Most virsh operations rely upon the libvirt library being able to connect to an already
       running libvirtd service.  This can usually be done using the command invoke-rc.d libvirtd
       start.

       Most virsh commands require root privileges to run due to the communications channels used
       to talk to the hypervisor.  Running as non root will return an error.

       Most virsh commands act synchronously, except maybe shutdown, setvcpus and setmem. In
       those cases the fact that the virsh program returned, may not mean the action is complete
       and you must poll periodically to detect that the guest completed the operation.

       virsh strives for backward compatibility.  Although the help command only lists the
       preferred usage of a command, if an older version of virsh supported an alternate spelling
       of a command or option (such as --tunnelled instead of --tunneled), then scripts using
       that older spelling will continue to work.

       Several virsh commands take an optionally scaled integer; if no scale is provided, then
       the default is listed in the command (for historical reasons, some commands default to
       bytes, while other commands default to kibibytes).  The following case-insensitive
       suffixes can be used to select a specific scale:
         b, byte  byte      1
         KB       kilobyte  1,000
         k, KiB   kibibyte  1,024
         MB       megabyte  1,000,000
         M, MiB   mebibyte  1,048,576
         GB       gigabyte  1,000,000,000
         G, GiB   gibibyte  1,073,741,824
         TB       terabyte  1,000,000,000,000
         T, TiB   tebibyte  1,099,511,627,776
         PB       petabyte  1,000,000,000,000,000
         P, PiB   pebibyte  1,125,899,906,842,624
         EB       exabyte   1,000,000,000,000,000,000
         E, EiB   exbibyte  1,152,921,504,606,846,976

GENERIC COMMANDS

       The following commands are generic i.e. not specific to a domain.

       help [command-or-group]
           This lists each of the virsh commands.  When used without options, all commands are
           listed, one per line, grouped into related categories, displaying the keyword for each
           group.

           To display only commands for a specific group, give the keyword for that group as an
           option.  For example:

            virsh # help host

             Host and Hypervisor (help keyword 'host'):
                capabilities                   capabilities
                cpu-models                     show the CPU models for an architecture
                connect                        (re)connect to hypervisor
                freecell                       NUMA free memory
                hostname                       print the hypervisor hostname
                qemu-attach                    Attach to existing QEMU process
                qemu-monitor-command           QEMU Monitor Command
                qemu-agent-command             QEMU Guest Agent Command
                sysinfo                        print the hypervisor sysinfo
                uri                            print the hypervisor canonical URI

           To display detailed information for a specific command, give its name as the option
           instead.  For example:

            virsh # help list
              NAME
                list - list domains

              SYNOPSIS
                list [--inactive] [--all]

              DESCRIPTION
                Returns list of domains.

              OPTIONS
                --inactive       list inactive domains
                --all            list inactive & active domains

       quit, exit
           quit this interactive terminal

       version [--daemon]
           Will print out the major version info about what this built from.  If --daemon is
           specified then the version of the libvirt daemon is included in the output.

               Example

                $ virsh version
                Compiled against library: libvirt 1.2.3
                Using library: libvirt 1.2.3
                Using API: QEMU 1.2.3
                Running hypervisor: QEMU 2.0.50

                $ virsh version --daemon
                Compiled against library: libvirt 1.2.3
                Using library: libvirt 1.2.3
                Using API: QEMU 1.2.3
                Running hypervisor: QEMU 2.0.50
                Running against daemon: 1.2.6

       cd [directory]
           Will change current directory to directory.  The default directory for the cd command
           is the home directory or, if there is no HOME variable in the environment, the root
           directory.

           This command is only available in interactive mode.

       pwd Will print the current directory.

       connect [URI] [--readonly]
           (Re)-Connect to the hypervisor. When the shell is first started, this is automatically
           run with the URI parameter requested by the "-c" option on the command line. The URI
           parameter specifies how to connect to the hypervisor. The documentation page at
           <https://libvirt.org/uri.html> list the values supported, but the most common are:

           xen:///
               this is used to connect to the local Xen hypervisor

           qemu:///system
               connect locally as root to the daemon supervising QEMU and KVM domains

           qemu:///session
               connect locally as a normal user to his own set of QEMU and KVM domains

           lxc:///
               connect to a local linux container

           To find the currently used URI, check the uri command documented below.

           For remote access see the documentation page at <https://libvirt.org/uri.html> on how
           to make URIs.  The --readonly option allows for read-only connection

       uri Prints the hypervisor canonical URI, can be useful in shell mode.

       hostname
           Print the hypervisor hostname.

       sysinfo
           Print the XML representation of the hypervisor sysinfo, if available.

       nodeinfo
           Returns basic information about the node, like number and type of CPU, and size of the
           physical memory. The output corresponds to virNodeInfo structure. Specifically, the
           "CPU socket(s)" field means number of CPU sockets per NUMA cell. The information
           libvirt displays is dependent upon what each architecture may provide.

       nodecpumap [--pretty]
           Displays the node's total number of CPUs, the number of online CPUs and the list of
           online CPUs.

           With --pretty the online CPUs are printed as a range instead of a list.

       nodecpustats [cpu] [--percent]
           Returns cpu stats of the node.  If cpu is specified, this will print the specified cpu
           statistics only.  If --percent is specified, this will print the percentage of each
           kind of cpu statistics during 1 second.

       nodememstats [cell]
           Returns memory stats of the node.  If cell is specified, this will print the specified
           cell statistics only.

       nodesuspend [target] [duration]
           Puts the node (host machine) into a system-wide sleep state and schedule the node's
           Real-Time-Clock interrupt to resume the node after the time duration specified by
           duration is out.  target specifies the state to which the host will be suspended to,
           it can be "mem" (suspend to RAM), "disk" (suspend to disk), or "hybrid" (suspend to
           both RAM and disk).  duration specifies the time duration in seconds for which the
           host has to be suspended, it should be at least 60 seconds.

       node-memory-tune [shm-pages-to-scan] [shm-sleep-millisecs] [shm-merge-across-nodes]
           Allows you to display or set the node memory parameters.  shm-pages-to-scan can be
           used to set the number of pages to scan before the shared memory service goes to
           sleep; shm-sleep-millisecs can be used to set the number of millisecs the shared
           memory service should sleep before next scan; shm-merge-across-nodes specifies if
           pages from different numa nodes can be merged. When set to 0, only pages which
           physically reside in the memory area of same NUMA node can be merged. When set to 1,
           pages from all nodes can be merged. Default to 1.

           Note: Currently the "shared memory service" only means KSM (Kernel Samepage Merging).

       capabilities
           Print an XML document describing the capabilities of the hypervisor we are currently
           connected to. This includes a section on the host capabilities in terms of CPU and
           features, and a set of description for each kind of guest which can be virtualized.
           For a more complete description see:
             <https://libvirt.org/formatcaps.html> The XML also show the NUMA topology
           information if available.

       domcapabilities [virttype] [emulatorbin] [arch] [machine]
           Print an XML document describing the domain capabilities for the hypervisor we are
           connected to using information either sourced from an existing domain or taken from
           the virsh capabilities output. This may be useful if you intend to create a new domain
           and are curious if for instance it could make use of VFIO by creating a domain for the
           hypervisor with a specific emulator and architecture.

           Each hypervisor will have different requirements regarding which options are required
           and which are optional. A hypervisor can support providing a default value for any of
           the options.

           The virttype option specifies the virtualization type used. The value to be used is
           either from the 'type' attribute of the <domain/> top level element from the domain
           XML or the 'type' attribute found within each <guest/> element from the virsh
           capabilities output.  The emulatorbin option specifies the path to the emulator. The
           value to be used is either the <emulator> element in the domain XML or the virsh
           capabilities output. The arch option specifies the architecture to be used for the
           domain. The value to be used is either the "arch" attribute from the domain's XML
           <os/> element and <type/> subelement or the "name" attribute of an <arch/> element
           from the virsh capabililites output. The machine specifies the machine type for the
           emulator. The value to be used is either the "machine" attribute from the domain's XML
           <os/> element and <type/> subelement or one from a list of machines from the virsh
           capabilities output for a specific architecture and domain type.

           For the qemu hypervisor, a virttype of either 'qemu' or 'kvm' must be supplied along
           with either the emulatorbin or arch in order to generate output for the default
           machine.  Supplying a machine value will generate output for the specific machine.

       inject-nmi domain
           Inject NMI to the guest.

       list [--inactive | --all] [--managed-save] [--title] { [--table] | --name | --uuid }
       [--persistent] [--transient] [--with-managed-save] [--without-managed-save] [--autostart]
       [--no-autostart] [--with-snapshot] [--without-snapshot] [--state-running] [--state-paused]
       [--state-shutoff] [--state-other]
           Prints information about existing domains.  If no options are specified it prints out
           information about running domains.

           An example format for the list is as follows:

           virsh list
             Id    Name                           State
            ----------------------------------------------------
             0     Domain-0                       running
             2     fedora                         paused

           Name is the name of the domain.  ID the domain numeric id.  State is the run state
           (see below).

           STATES

           The State field lists what state each domain is currently in. A domain can be in one
           of the following possible states:

           running
               The domain is currently running on a CPU

           idle
               The domain is idle, and not running or runnable.  This can be caused because the
               domain is waiting on IO (a traditional wait state) or has gone to sleep because
               there was nothing else for it to do.

           paused
               The domain has been paused, usually occurring through the administrator running
               virsh suspend.  When in a paused state the domain will still consume allocated
               resources like memory, but will not be eligible for scheduling by the hypervisor.

           in shutdown
               The domain is in the process of shutting down, i.e. the guest operating system has
               been notified and should be in the process of stopping its operations gracefully.

           shut off
               The domain is not running.  Usually this indicates the domain has been shut down
               completely, or has not been started.

           crashed
               The domain has crashed, which is always a violent ending.  Usually this state can
               only occur if the domain has been configured not to restart on crash.

           pmsuspended
               The domain has been suspended by guest power management, e.g. entered into s3
               state.

           Normally only active domains are listed. To list inactive domains specify --inactive
           or --all to list both active and inactive domains.

           To further filter the list of domains you may specify one or more of filtering flags
           supported by the list command. These flags are grouped by function.  Specifying one or
           more flags from a group enables the filter group. Note that some combinations of flags
           may yield no results. Supported filtering flags and groups:

           Persistence
               Flag --persistent is used to include persistent domains in the returned list. To
               include transient domains specify --transient.

           Existence of managed save image
               To list domains having a managed save image specify flag --with-managed-save. For
               domains that don't have a managed save image specify --without-managed-save.

           Domain state
               The following filter flags select a domain by its state: --state-running for
               running domains, --state-paused  for paused domains, --state-shutoff for turned
               off domains and --state-other for all other states as a fallback.

           Autostarting domains
               To list autostarting domains use the flag --autostart. To list domains with this
               feature disabled use --no-autostart.

           Snapshot existence
               Domains that have snapshot images can be listed using flag --with-snapshot,
               domains without a snapshot --without-snapshot.

           When talking to older servers, this command is forced to use a series of API calls
           with an inherent race, where a domain might not be listed or might appear more than
           once if it changed state between calls while the list was being collected.  Newer
           servers do not have this problem.

           If --managed-save is specified, then domains that have managed save state (only
           possible if they are in the shut off state, so you need to specify --inactive or --all
           to actually list them) will instead show as saved in the listing. This flag is usable
           only with the default --table output.  Note that this flag does not filter the list of
           domains.

           If --name is specified, domain names are printed instead of the table formatted one
           per line. If --uuid is specified domain's UUID's are printed instead of names. Flag
           --table specifies that the legacy table-formatted output should be used. This is the
           default.

           If both --name and --uuid are specified, domain UUID's and names are printed side by
           side without any header. Flag --table specifies that the legacy table-formatted output
           should be used. This is the default if neither --name nor --uuid are specified. Option
           --table is mutually exclusive with options --uuid and --name.

           If --title is specified, then the short domain description (title) is printed in an
           extra column. This flag is usable only with the default --table output.

           Example:

           virsh list --title
             Id    Name                           State      Title
            --------------------------------------------------------------------------
             0     Domain-0                       running    Mailserver 1
             2     fedora                         paused

       freecell [{ [--cellno] cellno | --all }]
           Prints the available amount of memory on the machine or within a NUMA cell.  The
           freecell command can provide one of three different displays of available memory on
           the machine depending on the options specified.  With no options, it displays the
           total free memory on the machine.  With the --all option, it displays the free memory
           in each cell and the total free memory on the machine.  Finally, with a numeric
           argument or with --cellno plus a cell number it will display the free memory for the
           specified cell only.

       freepages [{ [--cellno] cellno [--pagesize] pagesize | --all }]
           Prints the available amount of pages within a NUMA cell. cellno refers to the NUMA
           cell you're interested in. pagesize is a scaled integer (see NOTES above).
           Alternatively, if --all is used, info on each possible combination of NUMA cell and
           page size is printed out.

       allocpages [--pagesize] pagesize [--pagecount] pagecount [[--cellno] cellno] [--add]
       [--all]
           Change the size of pages pool of pagesize on the host. If --add is specified, then
           pagecount pages are added into the pool. However, if --add wasn't specified, then the
           pagecount is taken as the new absolute size of the pool (this may be used to free some
           pages and size the pool down). The cellno modifier can be used to narrow the
           modification down to a single host NUMA cell. On the other end of spectrum lies --all
           which executes the modification on all NUMA cells.

       cpu-baseline FILE [--features] [--migratable]
           Compute baseline CPU which will be supported by all host CPUs given in <file>.  The
           list of host CPUs is built by extracting all <cpu> elements from the <file>. Thus, the
           <file> can contain either a set of <cpu> elements separated by new lines or even a set
           of complete <capabilities> elements printed by capabilities command.  If --features is
           specified then the resulting XML description will explicitly include all features that
           make up the CPU, without this option features that are part of the CPU model will not
           be listed in the XML description.   If --migratable is specified, features that block
           migration will not be included in the resulting CPU.

       cpu-compare FILE [--error]
           Compare CPU definition from XML <file> with host CPU. The XML <file> may contain
           either host or guest CPU definition. The host CPU definition is the <cpu> element and
           its contents as printed by capabilities command. The guest CPU definition is the <cpu>
           element and its contents from domain XML definition. For more information on guest CPU
           definition see: <https://libvirt.org/formatdomain.html#elementsCPU>. If --error is
           specified, the command will return an error when the given CPU is incompatible with
           host CPU and a message providing more details about the incompatibility will be
           printed out.

       cpu-models arch
           Print the list of CPU models known for the specified architecture.

       echo [--shell] [--xml] [arg...]
           Echo back each arg, separated by space.  If --shell is specified, then the output will
           be single-quoted where needed, so that it is suitable for reuse in a shell context.
           If --xml is specified, then the output will be escaped for use in XML.

DOMAIN COMMANDS

       The following commands manipulate domains directly, as stated previously most commands
       take domain as the first parameter. The domain can be specified as a short integer, a name
       or a full UUID.

       autostart [--disable] domain
           Configure a domain to be automatically started at boot.

           The option --disable disables autostarting.

       console domain [devname] [--safe] [--force]
           Connect the virtual serial console for the guest. The optional devname parameter
           refers to the device alias of an alternate console, serial or parallel device
           configured for the guest.  If omitted, the primary console will be opened.

           If the flag --safe is specified, the connection is only attempted if the driver
           supports safe console handling. This flag specifies that the server has to ensure
           exclusive access to console devices. Optionally the --force flag may be specified,
           requesting to disconnect any existing sessions, such as in a case of a broken
           connection.

       create FILE [--console] [--paused] [--autodestroy] [--pass-fds N,M,...] [--validate]
           Create a domain from an XML <file>. Optionally, --validate option can be passed to
           validate the format of the input XML file against an internal RNG schema (identical to
           using virt-xml-validate(1) tool). Domains created using this command are going to be
           either transient (temporary ones that will vanish once destroyed) or existing
           persistent domains that will run with one-time use configuration, leaving the
           persistent XML untouched (this can come handy during an automated testing of various
           configurations all based on the original XML).  See the Example section for usage
           demonstration.

           The domain will be paused if the --paused option is used and supported by the driver;
           otherwise it will be running. If --console is requested, attach to the console after
           creation.  If --autodestroy is requested, then the guest will be automatically
           destroyed when virsh closes its connection to libvirt, or otherwise exits.

           If --pass-fds is specified, the argument is a comma separated list of open file
           descriptors which should be pass on into the guest. The file descriptors will be re-
           numbered in the guest, starting from 3. This is only supported with container based
           virtualization.

           Example

            1) prepare a template from an existing domain (skip directly to 3a if writing
               one from scratch)

            # virsh dumpxml <domain> > domain.xml

            2) edit the template using an editor of your choice and:
               a) DO CHANGE! <name> and <uuid> (<uuid> can also be removed), or
               b) DON'T CHANGE! either <name> or <uuid>

            # $EDITOR domain.xml

            3) create a domain from domain.xml, depending on whether following 2a or 2b
               respectively:
               a) the domain is going to be transient
               b) an existing persistent domain will run with a modified one-time
                  configuration

            # virsh create domain.xml

       define FILE [--validate]
           Define a domain from an XML <file>. Optionally, the format of the input XML file can
           be validated against an internal RNG schema with --validate (identical to using
           virt-xml-validate(1) tool). The domain definition is registered but not started.  If
           domain is already running, the changes will take effect on the next boot.

       desc domain [[--live] [--config] | [--current]] [--title] [--edit] [--new-desc New
       description or title message]
           Show or modify description and title of a domain. These values are user fields that
           allow to store arbitrary textual data to allow easy identification of domains. Title
           should be short, although it's not enforced.  (See also metadata that works with XML
           based domain metadata.)

           Flags --live or --config select whether this command works on live or persistent
           definitions of the domain. If both --live and --config are specified, the --config
           option takes precedence on getting the current description and both live configuration
           and config are updated while setting the description. --current is exclusive and
           implied if none of these was specified.

           Flag --edit specifies that an editor with the contents of current description or title
           should be opened and the contents saved back afterwards.

           Flag --title selects operation on the title field instead of description.

           If neither of --edit and --new-desc are specified the note or description is displayed
           instead of being modified.

       destroy domain [--graceful]
           Immediately terminate the domain domain.  This doesn't give the domain OS any chance
           to react, and it's the equivalent of ripping the power cord out on a physical machine.
           In most cases you will want to use the shutdown command instead.  However, this does
           not delete any storage volumes used by the guest, and if the domain is persistent, it
           can be restarted later.

           If domain is transient, then the metadata of any snapshots will be lost once the guest
           stops running, but the snapshot contents still exist, and a new domain with the same
           name and UUID can restore the snapshot metadata with snapshot-create.

           If --graceful is specified, don't resort to extreme measures (e.g. SIGKILL) when the
           guest doesn't stop after a reasonable timeout; return an error instead.

       domblkstat domain [block-device] [--human]
           Get device block stats for a running domain.  A block-device corresponds to a unique
           target name (<target dev='name'/>) or source file (<source file='name'/>) for one of
           the disk devices attached to domain (see also domblklist for listing these names). On
           a lxc or qemu domain, omitting the block-device yields device block stats summarily
           for the entire domain.

           Use --human for a more human readable output.

           Availability of these fields depends on hypervisor. Unsupported fields are missing
           from the output. Other fields may appear if communicating with a newer version of
           libvirtd.

           Explanation of fields (fields appear in the following order):
             rd_req            - count of read operations
             rd_bytes          - count of read bytes
             wr_req            - count of write operations
             wr_bytes          - count of written bytes
             errs              - error count
             flush_operations  - count of flush operations
             rd_total_times    - total time read operations took (ns)
             wr_total_times    - total time write operations took (ns)
             flush_total_times - total time flush operations took (ns)
               <-- other fields provided by hypervisor -->

       domifaddr domain [interface] [--full] [--source lease|agent]
           Get a list of interfaces of a running domain along with their IP and MAC addresses, or
           limited output just for one interface if interface is specified. Note that interface
           can be driver dependent, it can be the name within guest OS or the name you would see
           in domain XML. Moreover, the whole command may require a guest agent to be configured
           for the queried domain under some hypervisors, notably QEMU.

           If --full is specified, the interface name and MAC address is always displayed when
           the interface has multiple IP addresses or aliases; otherwise, only the interface name
           and MAC address is displayed for the first name and MAC address with "-" for the
           others using the same name and MAC address.

           The --source argument specifies what data source to use for the addresses, currently
           one of 'lease' to read DHCP leases, or 'agent' to query the guest OS via an agent. If
           unspecified, 'lease' is the default.

       domifstat domain interface-device
           Get network interface stats for a running domain. The network interface stats are only
           available for interfaces that have a physical source interface. This does not include,
           for example, a 'user' interface type since it is a virtual LAN with NAT to the outside
           world. interface-device can be the interface target by name or MAC address.

       domif-setlink domain interface-device state [--config]
           Modify link state of the domain's virtual interface. Possible values for state are
           "up" and "down". If --config is specified, only the persistent configuration of the
           domain is modified, for compatibility purposes, --persistent is alias of --config.
           interface-device can be the interface's target name or the MAC address.

       domif-getlink domain interface-device [--config]
           Query link state of the domain's virtual interface. If --config is specified, query
           the persistent configuration, for compatibility purposes, --persistent is alias of
           --config.

           interface-device can be the interface's target name or the MAC address.

       domiftune domain interface-device [[--config] [--live] | [--current]] [--inbound
       average,peak,burst,floor] [--outbound average,peak,burst]
           Set or query the domain's network interface's bandwidth parameters.  interface-device
           can be the interface's target name (<target dev='name'/>), or the MAC address.

           If no --inbound or --outbound is specified, this command will query and show the
           bandwidth settings. Otherwise, it will set the inbound or outbound bandwidth.
           average,peak,burst,floor is the same as in command attach-interface.  Values for
           average, peak and floor are expressed in kilobytes per second, while burst is
           expressed in kilobytes in a single burst at peak speed as described in the Network XML
           documentation at <https://libvirt.org/formatnetwork.html#elementQoS>.

           To clear inbound or outbound settings, use --inbound or --outbound respectfully with
           average value of zero.

           If --live is specified, affect a running guest.  If --config is specified, affect the
           next boot of a persistent guest.  If --current is specified, affect the current guest
           state.  Both --live and --config flags may be given, but --current is exclusive. If no
           flag is specified, behavior is different depending on hypervisor.

       dommemstat domain [--period seconds] [[--config] [--live] | [--current]]
           Get memory stats for a running domain.

           Availability of these fields depends on hypervisor. Unsupported fields are missing
           from the output. Other fields may appear if communicating with a newer version of
           libvirtd.

           Explanation of fields:
             swap_in           - The amount of data read from swap space (in KiB)
             swap_out          - The amount of memory written out to swap space (in KiB)
             major_fault       - The number of page faults where disk IO was required
             minor_fault       - The number of other page faults
             unused            - The amount of memory left unused by the system (in KiB)
             available         - The amount of usable memory as seen by the domain (in KiB)
             actual            - Current balloon value (in KiB)
             rss               - Resident Set Size of the running domain's process (in KiB)
             usable            - The amount of memory which can be reclaimed by balloon without
           causing host swapping (in KiB)
             last-update       - Timestamp of the last update of statistics (in seconds)

           For QEMU/KVM with a memory balloon, setting the optional --period to a value larger
           than 0 in seconds will allow the balloon driver to return additional statistics which
           will be displayed by subsequent dommemstat commands. Setting the --period to 0 will
           stop the balloon driver collection, but does not clear the statistics in the balloon
           driver. Requires at least QEMU/KVM 1.5 to be running on the host.

           The --live, --config, and --current flags are only valid when using the --period
           option in order to set the collection period for the balloon driver. If --live is
           specified, only the running guest collection period is affected. If --config is
           specified, affect the next boot of a persistent guest. If --current is specified,
           affect the current guest state.

           Both --live and --config flags may be given, but --current is exclusive. If no flag is
           specified, behavior is different depending on the guest state.

       domblkerror domain
           Show errors on block devices.  This command usually comes handy when domstate command
           says that a domain was paused due to I/O error.  The domblkerror command lists all
           block devices in error state and the error seen on each of them.

       domblkinfo domain block-device [--human]
           Get block device size info for a domain.  A block-device corresponds to a unique
           target name (<target dev='name'/>) or source file (<source file='name'/>) for one of
           the disk devices attached to domain (see also domblklist for listing these names). If
           --human is set, the output will have a human readable output.

       domblklist domain [--inactive] [--details]
           Print a table showing the brief information of all block devices associated with
           domain. If --inactive is specified, query the block devices that will be used on the
           next boot, rather than those currently in use by a running domain. If --details is
           specified, disk type and device value will also be printed. Other contexts that
           require a block device name (such as domblkinfo or snapshot-create for disk snapshots)
           will accept either target or unique source names printed by this command.

       domstats [--raw] [--enforce] [--backing] [--state] [--cpu-total] [--balloon] [--vcpu]
       [--interface] [--block] [--perf] [[--list-active] [--list-inactive] [--list-persistent]
       [--list-transient] [--list-running] [--list-paused] [--list-shutoff] [--list-other]] |
       [domain ...]
           Get statistics for multiple or all domains. Without any argument this command prints
           all available statistics for all domains.

           The list of domains to gather stats for can be either limited by listing the domains
           as a space separated list, or by specifying one of the filtering flags --list-*. (The
           approaches can't be combined.)

           By default some of the returned fields may be converted to more human friendly values
           by a set of pretty-printers. To suppress this behavior use the --raw flag.

           The individual statistics groups are selectable via specific flags. By default all
           supported statistics groups are returned. Supported statistics groups flags are:
           --state, --cpu-total, --balloon, --vcpu, --interface, --block, --perf.

           Note that - depending on the hypervisor type and version or the domain state - not all
           of the following statistics may be returned.

           When selecting the --state group the following fields are returned:

            "state.state" - state of the VM, returned as number from
                            virDomainState enum
            "state.reason" - reason for entering given state, returned
                             as int from virDomain*Reason enum corresponding
                             to given state

           --cpu-total returns:

            "cpu.time" - total cpu time spent for this domain in nanoseconds
            "cpu.user" - user cpu time spent in nanoseconds
            "cpu.system" - system cpu time spent in nanoseconds

           --balloon returns:

            "balloon.current" - the memory in KiB currently used
            "balloon.maximum" - the maximum memory in KiB allowed
            "balloon.swap_in" - the amount of data read from swap space (in KiB)
            "balloon.swap_out" - the amount of memory written out to swap
                                 space (in KiB)
            "balloon.major_fault" - the number of page faults then disk IO
                                    was required
            "balloon.minor_fault" - the number of other page faults
            "balloon.unused" - the amount of memory left unused by the
                               system (in KiB)
            "balloon.available" - the amount of usable memory as seen by
                                  the domain (in KiB)
            "balloon.rss" - Resident Set Size of running domain's process
                            (in KiB)
            "balloon.usable" - the amount of memory which can be reclaimed by
                               balloon without causing host swapping (in KiB)
            "balloon.last-update" - timestamp of the last update of statistics
                                    (in seconds)

           --vcpu returns:

            "vcpu.current" - current number of online virtual CPUs
            "vcpu.maximum" - maximum number of online virtual CPUs
            "vcpu.<num>.state" - state of the virtual CPU <num>, as
                                 number from virVcpuState enum
            "vcpu.<num>.time" - virtual cpu time spent by virtual
                                CPU <num> (in microseconds)
            "vcpu.<num>.wait" - virtual cpu time spent by virtual
                                CPU <num> waiting on I/O (in microseconds)
            "vcpu.<num>.halted" - virtual CPU <num> is halted: yes or
                                  no (may indicate the processor is idle
                                  or even disabled, depending on the
                                  architecture)

           --interface returns:

            "net.count" - number of network interfaces on this domain
            "net.<num>.name" - name of the interface <num>
            "net.<num>.rx.bytes" - number of bytes received
            "net.<num>.rx.pkts" - number of packets received
            "net.<num>.rx.errs" - number of receive errors
            "net.<num>.rx.drop" - number of receive packets dropped
            "net.<num>.tx.bytes" - number of bytes transmitted
            "net.<num>.tx.pkts" - number of packets transmitted
            "net.<num>.tx.errs" - number of transmission errors
            "net.<num>.tx.drop" - number of transmit packets dropped

           --perf returns the statistics of all enabled perf events:

            "perf.cmt" - the cache usage in Byte currently used
            "perf.mbmt" - total system bandwidth from one level of cache
            "perf.mbml" - bandwidth of memory traffic for a memory controller
            "perf.cpu_cycles" - the count of cpu cycles (total/elapsed)
            "perf.instructions" - the count of instructions
            "perf.cache_references" - the count of cache hits
            "perf.cache_misses" - the count of caches misses
            "perf.branch_instructions" - the count of branch instructions
            "perf.branch_misses" - the count of branch misses
            "perf.bus_cycles" - the count of bus cycles
            "perf.stalled_cycles_frontend" - the count of stalled frontend
                                             cpu cycles
            "perf.stalled_cycles_backend" - the count of stalled backend
                                            cpu cycles
            "perf.ref_cpu_cycles" - the count of ref cpu cycles
            "perf.cpu_clock" - the count of cpu clock time
            "perf.task_clock" - the count of task clock time
            "perf.page_faults" - the count of page faults
            "perf.context_switches" - the count of context switches
            "perf.cpu_migrations" - the count of cpu migrations
            "perf.page_faults_min" - the count of minor page faults
            "perf.page_faults_maj" - the count of major page faults
            "perf.alignment_faults" - the count of alignment faults
            "perf.emulation_faults" - the count of emulation faults

           See the perf command for more details about each event.

           --block returns information about disks associated with each domain.  Using the
           --backing flag extends this information to cover all resources in the backing chain,
           rather than the default of limiting information to the active layer for each guest
           disk.  Information listed includes:

            "block.count" - number of block devices being listed
            "block.<num>.name" - name of the target of the block
                                 device <num> (the same name for
                                 multiple entries if I<--backing>
                                 is present)
            "block.<num>.backingIndex" - when I<--backing> is present,
                                         matches up with the <backingStore>
                                         index listed in domain XML for
                                         backing files
            "block.<num>.path" - file source of block device <num>, if
                                 it is a local file or block device
            "block.<num>.rd.reqs" - number of read requests
            "block.<num>.rd.bytes" - number of read bytes
            "block.<num>.rd.times" - total time (ns) spent on reads
            "block.<num>.wr.reqs" - number of write requests
            "block.<num>.wr.bytes" - number of written bytes
            "block.<num>.wr.times" - total time (ns) spent on writes
            "block.<num>.fl.reqs" - total flush requests
            "block.<num>.fl.times" - total time (ns) spent on cache flushing
            "block.<num>.errors" - Xen only: the 'oo_req' value
            "block.<num>.allocation" - offset of highest written sector in bytes
            "block.<num>.capacity" - logical size of source file in bytes
            "block.<num>.physical" - physical size of source file in bytes
            "block.<num>.threshold" - threshold (in bytes) for delivering the
                                      VIR_DOMAIN_EVENT_ID_BLOCK_THRESHOLD event
                                      See domblkthreshold.

           Selecting a specific statistics groups doesn't guarantee that the daemon supports the
           selected group of stats. Flag --enforce forces the command to fail if the daemon
           doesn't support the selected group.

       domiflist domain [--inactive]
           Print a table showing the brief information of all virtual interfaces associated with
           domain. If --inactive is specified, query the virtual interfaces that will be used on
           the next boot, rather than those currently in use by a running domain. Other contexts
           that require a MAC address of virtual interface (such as detach-interface or domif-
           setlink) will accept the MAC address printed by this command.

       blockcommit domain path [bandwidth] [--bytes] [base] [--shallow] [top] [--delete]
       [--keep-relative] [--wait [--async] [--verbose]] [--timeout seconds] [--active] [{--pivot
       | --keep-overlay}]
           Reduce the length of a backing image chain, by committing changes at the top of the
           chain (snapshot or delta files) into backing images.  By default, this command
           attempts to flatten the entire chain.  If base and/or top are specified as files
           within the backing chain, then the operation is constrained to committing just that
           portion of the chain; --shallow can be used instead of base to specify the immediate
           backing file of the resulting top image to be committed.  The files being committed
           are rendered invalid, possibly as soon as the operation starts; using the --delete
           flag will attempt to remove these invalidated files at the successful completion of
           the commit operation. When the --keep-relative flag is used, the backing file paths
           will be kept relative.

           When top is omitted or specified as the active image, it is also possible to specify
           --active to trigger a two-phase active commit. In the first phase, top is copied into
           base and the job can only be canceled, with top still containing data not yet in base.
           In the second phase, top and base remain identical until a call to blockjob with the
           --abort flag (keeping top as the active image that tracks changes from that point in
           time) or the --pivot flag (making base the new active image and invalidating top).

           By default, this command returns as soon as possible, and data for the entire disk is
           committed in the background; the progress of the operation can be checked with
           blockjob.  However, if --wait is specified, then this command will block until the
           operation completes (or for --active, enters the second phase), or until the operation
           is canceled because the optional timeout in seconds elapses or SIGINT is sent (usually
           with "Ctrl-C").  Using --verbose along with --wait will produce periodic status
           updates.  If job cancellation is triggered, --async will return control to the user as
           fast as possible, otherwise the command may continue to block a little while longer
           until the job is done cleaning up.  Using --pivot is shorthand for combining --active
           --wait with an automatic blockjob --pivot; and using --keep-overlay is shorthand for
           combining --active --wait with an automatic blockjob --abort.

           path specifies fully-qualified path of the disk; it corresponds to a unique target
           name (<target dev='name'/>) or source file (<source file='name'/>) for one of the disk
           devices attached to domain (see also domblklist for listing these names).  bandwidth
           specifies copying bandwidth limit in MiB/s, although for qemu, it may be non-zero only
           for an online domain. For further information on the bandwidth argument see the
           corresponding section for the blockjob command.

       blockcopy domain path { dest [format] [--blockdev] | --xml file } [--shallow]
       [--reuse-external] [bandwidth] [--wait [--async] [--verbose]] [{--pivot | --finish}]
       [--timeout seconds] [granularity] [buf-size] [--bytes] [--transient-job]
           Copy a disk backing image chain to a destination.  Either dest as the destination file
           name, or --xml with the name of an XML file containing a top-level <disk> element
           describing the destination, must be present.  Additionally, if dest is given, format
           should be specified to declare the format of the destination (if format is omitted,
           then libvirt will reuse the format of the source, or with --reuse-external will be
           forced to probe the destination format, which could be a potential security hole).
           The command supports --raw as a boolean flag synonym for --format=raw.  When using
           dest, the destination is treated as a regular file unless --blockdev is used to signal
           that it is a block device. By default, this command flattens the entire chain; but if
           --shallow is specified, the copy shares the backing chain.

           If --reuse-external is specified, then the destination must exist and have sufficient
           space to hold the copy. If --shallow is used in conjunction with --reuse-external then
           the pre-created image must have guest visible contents identical to guest visible
           contents of the backing file of the original image. This may be used to modify the
           backing file names on the destination.

           By default, the copy job runs in the background, and consists of two phases.
           Initially, the job must copy all data from the source, and during this phase, the job
           can only be canceled to revert back to the source disk, with no guarantees about the
           destination.  After this phase completes, both the source and the destination remain
           mirrored until a call to blockjob with the --abort and --pivot flags pivots over to
           the copy, or a call without --pivot leaves the destination as a faithful copy of that
           point in time.  However, if --wait is specified, then this command will block until
           the mirroring phase begins, or cancel the operation if the optional timeout in seconds
           elapses or SIGINT is sent (usually with "Ctrl-C").  Using --verbose along with --wait
           will produce periodic status updates.  Using --pivot (similar to blockjob --pivot) or
           --finish (similar to blockjob --abort) implies --wait, and will additionally end the
           job cleanly rather than leaving things in the mirroring phase.  If job cancellation is
           triggered by timeout or by --finish, --async will return control to the user as fast
           as possible, otherwise the command may continue to block a little while longer until
           the job has actually cancelled.

           path specifies fully-qualified path of the disk.  bandwidth specifies copying
           bandwidth limit in MiB/s. Specifying a negative value is interpreted as an unsigned
           long long value that might be essentially unlimited, but more likely would overflow;
           it is safer to use 0 for that purpose. For further information on the bandwidth
           argument see the corresponding section for the blockjob command.  Specifying
           granularity allows fine-tuning of the granularity that will be copied when a dirty
           region is detected; larger values trigger less I/O overhead but may end up copying
           more data overall (the default value is usually correct); hypervisors may restrict
           this to be a power of two or fall within a certain range. Specifying buf-size will
           control how much data can be simultaneously in-flight during the copy; larger values
           use more memory but may allow faster completion (the default value is usually
           correct).

           --transient-job allows to specify that the user does not require the job to be
           recovered if the VM crashes or is turned off before the job completes. This flag
           removes the restriction of copy jobs to transient domains if that restriction is
           applied by the hypervisor.

       blockpull domain path [bandwidth] [--bytes] [base] [--wait [--verbose] [--timeout seconds]
       [--async]] [--keep-relative]
           Populate a disk from its backing image chain. By default, this command flattens the
           entire chain; but if base is specified, containing the name of one of the backing
           files in the chain, then that file becomes the new backing file and only the
           intermediate portion of the chain is pulled.  Once all requested data from the backing
           image chain has been pulled, the disk no longer depends on that portion of the backing
           chain.

           By default, this command returns as soon as possible, and data for the entire disk is
           pulled in the background; the progress of the operation can be checked with blockjob.
           However, if --wait is specified, then this command will block until the operation
           completes, or cancel the operation if the optional timeout in seconds elapses or
           SIGINT is sent (usually with "Ctrl-C").  Using --verbose along with --wait will
           produce periodic status updates.  If job cancellation is triggered, --async will
           return control to the user as fast as possible, otherwise the command may continue to
           block a little while longer until the job is done cleaning up.

           Using the --keep-relative flag will keep the backing chain names relative.

           path specifies fully-qualified path of the disk; it corresponds to a unique target
           name (<target dev='name'/>) or source file (<source file='name'/>) for one of the disk
           devices attached to domain (see also domblklist for listing these names).  bandwidth
           specifies copying bandwidth limit in MiB/s. For further information on the bandwidth
           argument see the corresponding section for the blockjob command.

       blkdeviotune domain device [[--config] [--live] | [--current]] [[total-bytes-sec] | [read-
       bytes-sec] [write-bytes-sec]] [[total-iops-sec] | [read-iops-sec] [write-iops-sec]]
       [[total-bytes-sec-max] | [read-bytes-sec-max] [write-bytes-sec-max]] [[total-iops-sec-max]
       | [read-iops-sec-max] [write-iops-sec-max]] [[total-bytes-sec-max-length] | [read-bytes-
       sec-max-length] [write-bytes-sec-max-length]] [[total-iops-sec-max-length] | [read-iops-
       sec-max-length] [write-iops-sec-max-length]] [size-iops-sec] [group-name]
           Set or query the block disk io parameters for a block device of domain.  device
           specifies a unique target name (<target dev='name'/>) or source file (<source
           file='name'/>) for one of the disk devices attached to domain (see also domblklist for
           listing these names).

           If no limit is specified, it will query current I/O limits setting.  Otherwise, alter
           the limits with these flags: --total-bytes-sec specifies total throughput limit as a
           scaled integer, the default being bytes per second if no suffix is specified.
           --read-bytes-sec specifies read throughput limit as a scaled integer, the default
           being bytes per second if no suffix is specified.  --write-bytes-sec specifies write
           throughput limit as a scaled integer, the default being bytes per second if no suffix
           is specified.  --total-iops-sec specifies total I/O operations limit per second.
           --read-iops-sec specifies read I/O operations limit per second.  --write-iops-sec
           specifies write I/O operations limit per second.  --total-bytes-sec-max specifies
           maximum total throughput limit as a scaled integer, the default being bytes per second
           if no suffix is specified --read-bytes-sec-max specifies maximum read throughput limit
           as a scaled integer, the default being bytes per second if no suffix is specified.
           --write-bytes-sec-max specifies maximum write throughput limit as a scaled integer,
           the default being bytes per second if no suffix is specified.  --total-iops-sec-max
           specifies maximum total I/O operations limit per second.  --read-iops-sec-max
           specifies maximum read I/O operations limit per second.  --write-iops-sec-max
           specifies maximum write I/O operations limit per second.  --total-bytes-sec-max-length
           specifies duration in seconds to allow maximum total throughput limit.
           --read-bytes-sec-max-length specifies duration in seconds to allow maximum read
           throughput limit.  --write-bytes-sec-max-length specifies duration in seconds to allow
           maximum write throughput limit.  --total-iops-sec-max-length specifies duration in
           seconds to allow maximum total I/O operations limit.  --read-iops-sec-max-length
           specifies duration in seconds to allow maximum read I/O operations limit.
           --write-iops-sec-max-length specifies duration in seconds to allow maximum write I/O
           operations limit.  --size-iops-sec specifies size I/O operations limit per second.
           --group-name specifies group name to share I/O quota between multiple drives.  For a
           qemu domain, if no name is provided, then the default is to have a single group for
           each device.

           Older versions of virsh only accepted these options with underscore instead of dash,
           as in --total_bytes_sec.

           Bytes and iops values are independent, but setting only one value (such as
           --read-bytes-sec) resets the other two in that category to unlimited.  An explicit 0
           also clears any limit.  A non-zero value for a given total cannot be mixed with non-
           zero values for read or write.

           It is up to the hypervisor to determine how to handle the length values.  For the qemu
           hypervisor, if an I/O limit value or maximum value is set, then the default value of 1
           second will be displayed. Supplying a 0 will reset the value back to the default.

           If --live is specified, affect a running guest.  If --config is specified, affect the
           next boot of a persistent guest.  If --current is specified, affect the current guest
           state.  When setting the disk io parameters both --live and --config flags may be
           given, but --current is exclusive. For querying only one of --live, --config or
           --current can be specified. If no flag is specified, behavior is different depending
           on hypervisor.

       blockjob domain path { [--abort] [--async] [--pivot] | [--info] [--raw] [--bytes] |
       [bandwidth] }
           Manage active block operations.  There are three mutually-exclusive modes: --info,
           bandwidth, and --abort.  --async and --pivot imply abort mode; --raw implies info
           mode; and if no mode was given, --info mode is assumed.

           path specifies fully-qualified path of the disk; it corresponds to a unique target
           name (<target dev='name'/>) or source file (<source file='name'/>) for one of the disk
           devices attached to domain (see also domblklist for listing these names).

           In --abort mode, the active job on the specified disk will be aborted.  If --async is
           also specified, this command will return immediately, rather than waiting for the
           cancellation to complete.  If --pivot is specified, this requests that an active copy
           or active commit job be pivoted over to the new image.

           In --info mode, the active job information on the specified disk will be printed.  By
           default, the output is a single human-readable summary line; this format may change in
           future versions.  Adding --raw lists each field of the struct, in a stable format.  If
           the --bytes flag is set, then the command errors out if the server could not supply
           bytes/s resolution; when omitting the flag, raw output is listed in MiB/s and human-
           readable output automatically selects the best resolution supported by the server.

           bandwidth can be used to set bandwidth limit for the active job in MiB/s.  If --bytes
           is specified then the bandwidth value is interpreted in bytes/s. Specifying a negative
           value is interpreted as an unsigned long value or essentially unlimited. The
           hypervisor can choose whether to reject the value or convert it to the maximum value
           allowed. Optionally a scaled positive number may be used as bandwidth (see NOTES
           above). Using --bytes with a scaled value allows to use finer granularity. A scaled
           value used without --bytes will be rounded down to MiB/s. Note that the --bytes may be
           unsupported by the hypervisor.

       domblkthreshold domain dev threshold
           Set the threshold value for delivering the block-threshold event. dev specifies the
           disk device target or backing chain element of given device using the 'target[1]'
           syntax. threshold is a scaled value of the offset. If the block device should write
           beyond that offset the event will be delivered.

       blockresize domain path size
           Resize a block device of domain while the domain is running, path specifies the
           absolute path of the block device; it corresponds to a unique target name (<target
           dev='name'/>) or source file (<source file='name'/>) for one of the disk devices
           attached to domain (see also domblklist for listing these names).

           size is a scaled integer (see NOTES above) which defaults to KiB (blocks of 1024
           bytes) if there is no suffix.  You must use a suffix of "B" to get bytes (note that
           for historical reasons, this differs from vol-resize which defaults to bytes without a
           suffix).

       domdisplay domain [--include-password] [[--type] type] [--all]
           Output a URI which can be used to connect to the graphical display of the domain via
           VNC, SPICE or RDP.  The particular graphical display type can be selected using the
           type parameter (e.g. "vnc", "spice", "rdp").  If --include-password is specified, the
           SPICE channel password will be included in the URI. If --all is specified, then all
           show all possible graphical displays, for a VM could have more than one graphical
           displays.

       domfsinfo domain
           Show a list of mounted filesystems within the running domain. The list contains
           mountpoints, names of a mounted device in the guest, filesystem types, and unique
           target names used in the domain XML (<target dev='name'/>).

           Note that this command requires a guest agent configured and running in the domain's
           guest OS.

       domfsfreeze domain [[--mountpoint] mountpoint...]
           Freeze mounted filesystems within a running domain to prepare for consistent
           snapshots.

           The --mountpoint option takes a parameter mountpoint, which is a mount point path of
           the filesystem to be frozen. This option can occur multiple times. If this is not
           specified, every mounted filesystem is frozen.

           Note: snapshot-create command has a --quiesce option to freeze and thaw the
           filesystems automatically to keep snapshots consistent.  domfsfreeze command is only
           needed when a user wants to utilize the native snapshot features of storage devices
           not supported by libvirt.

       domfsthaw domain [[--mountpoint] mountpoint...]
           Thaw mounted filesystems within a running domain, which have been frozen by
           domfsfreeze command.

           The --mountpoint option takes a parameter mountpoint, which is a mount point path of
           the filesystem to be thawed. This option can occur multiple times. If this is not
           specified, every mounted filesystem is thawed.

       domfstrim domain [--minimum bytes] [--mountpoint mountPoint]
           Issue a fstrim command on all mounted filesystems within a running domain. It discards
           blocks which are not in use by the filesystem.  If --minimum bytes is specified, it
           tells guest kernel length of contiguous free range. Smaller than this may be ignored
           (this is a hint and the guest may not respect it). By increasing this value, the
           fstrim operation will complete more quickly for filesystems with badly fragmented free
           space, although not all blocks will be discarded.  The default value is zero, meaning
           "discard every free block". Moreover, if a user wants to trim only one mount point, it
           can be specified via optional --mountpoint parameter.

       domhostname domain
           Returns the hostname of a domain, if the hypervisor makes it available.

       dominfo domain
           Returns basic information about the domain.

       domuuid domain-name-or-id
           Convert a domain name or id to domain UUID

       domid domain-name-or-uuid
           Convert a domain name (or UUID) to a domain id

       domjobabort domain
           Abort the currently running domain job.

       domjobinfo domain [--completed]
           Returns information about jobs running on a domain. --completed tells virsh to return
           information about a recently finished job. Statistics of a completed job are
           automatically destroyed once read or when libvirtd is restarted. Note that time
           information returned for completed migrations may be completely irrelevant unless both
           source and destination hosts have synchronized time (i.e., NTP daemon is running on
           both of them).

       domname domain-id-or-uuid
           Convert a domain Id (or UUID) to domain name

       domrename domain new-name
           Rename a domain. This command changes current domain name to the new name specified in
           the second argument.

           Note: Domain must be inactive and without snapshots.

       domstate domain [--reason]
           Returns state about a domain.  --reason tells virsh to also print reason for the
           state.

       domcontrol domain
           Returns state of an interface to VMM used to control a domain.  For states other than
           "ok" or "error" the command also prints number of seconds elapsed since the control
           interface entered its current state.

       domtime domain { [--now] [--pretty] [--sync] [--time time] }
           Gets or sets the domain's system time. When run without any arguments (but domain),
           the current domain's system time is printed out. The --pretty modifier can be used to
           print the time in more human readable form.

           When --time time is specified, the domain's time is not gotten but set instead. The
           --now modifier acts like if it was an alias for --time $now, which means it sets the
           time that is currently on the host virsh is running at. In both cases (setting and
           getting), time is in seconds relative to Epoch of 1970-01-01 in UTC.  The --sync
           modifies the set behavior a bit: The time passed is ignored, but the time to set is
           read from domain's RTC instead. Please note, that some hypervisors may require a guest
           agent to be configured in order to get or set the guest time.

       domxml-from-native format config
           Convert the file config in the native guest configuration format named by format to a
           domain XML format. For QEMU/KVM hypervisor, the format argument must be qemu-argv. For
           Xen hypervisor, the format argument may be xen-xm, xen-xl, or xen-sxpr. For LXC
           hypervisor, the format argument must be lxc-tools.

       domxml-to-native format { [--xml] xml | --domain domain-name-or-id-or-uuid }
           Convert the file xml into domain XML format or convert an existing --domain to the
           native guest configuration format named by format.  The xml and --domain arguments are
           mutually exclusive.

           For the QEMU/KVM hypervisor, the format argument must be qemu-argv.

           For the Xen hypervisor, the format argument may be xen-xm, xen-xl, or xen-sxpr.

           For the LXC hypervisor, the format argument must be lxc-tools.

       dump domain corefilepath [--bypass-cache] { [--live] | [--crash] | [--reset] } [--verbose]
       [--memory-only] [--format string]
           Dumps the core of a domain to a file for analysis.  If --live is specified, the domain
           continues to run until the core dump is complete, rather than pausing up front.  If
           --crash is specified, the domain is halted with a crashed status, rather than merely
           left in a paused state.  If --reset is specified, the domain is reset after successful
           dump.  Note, these three switches are mutually exclusive.  If --bypass-cache is
           specified, the save will avoid the file system cache, although this may slow down the
           operation.  If --memory-only is specified, the file is elf file, and will only include
           domain's memory and cpu common register value. It is very useful if the domain uses
           host devices directly.  --format string is used to specify the format of 'memory-only'
           dump, and string can be one of them: elf, kdump-zlib(kdump-compressed format with
           zlib-compressed), kdump-lzo(kdump-compressed format with lzo-compressed),
           kdump-snappy(kdump-compressed format with snappy-compressed).

           The progress may be monitored using domjobinfo virsh command and canceled with
           domjobabort command (sent by another virsh instance). Another option is to send SIGINT
           (usually with "Ctrl-C") to the virsh process running dump command. --verbose displays
           the progress of dump.

           NOTE: Some hypervisors may require the user to manually ensure proper permissions on
           file and path specified by argument corefilepath.

           NOTE: Crash dump in a old kvmdump format is being obsolete and cannot be loaded and
           processed by crash utility since its version 6.1.0. A --memory-only option is required
           in order to produce valid ELF file which can be later processed by the crash utility.

       dumpxml domain [--inactive] [--security-info] [--update-cpu] [--migratable]
           Output the domain information as an XML dump to stdout, this format can be used by the
           create command. Additional options affecting the XML dump may be used. --inactive
           tells virsh to dump domain configuration that will be used on next start of the domain
           as opposed to the current domain configuration.  Using --security-info will also
           include security sensitive information in the XML dump. --update-cpu updates domain
           CPU requirements according to host CPU. With --migratable one can request an XML that
           is suitable for migrations, i.e., compatible with older libvirt releases and possibly
           amended with internal run-time options. This option may automatically enable other
           options (--update-cpu, --security-info, ...) as necessary.

       edit domain
           Edit the XML configuration file for a domain, which will affect the next boot of the
           guest.

           This is equivalent to:

            virsh dumpxml --inactive --security-info domain > domain.xml
            vi domain.xml (or make changes with your other text editor)
            virsh define domain.xml

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

       event {[domain] { event | --all } [--loop] [--timeout seconds] [--timestamp] | --list}
           Wait for a class of domain events to occur, and print appropriate details of events as
           they happen.  The events can optionally be filtered by domain.  Using --list as the
           only argument will provide a list of possible event values known by this client,
           although the connection might not allow registering for all these events.  It is also
           possible to use --all instead of event to register for all possible event types at
           once.

           By default, this command is one-shot, and returns success once an event occurs; you
           can send SIGINT (usually via "Ctrl-C") to quit immediately.  If --timeout is
           specified, the command gives up waiting for events after seconds have elapsed.   With
           --loop, the command prints all events until a timeout or interrupt key.

           When --timestamp is used, a human-readable timestamp will be printed before the event.

       iothreadinfo domain [[--live] [--config] | [--current]]
           Display basic domain IOThreads information including the IOThread ID and the CPU
           Affinity for each IOThread.

           If --live is specified, get the IOThreads data from the running guest. If the guest is
           not running, an error is returned.  If --config is specified, get the IOThreads data
           from the next boot of a persistent guest.  If --current is specified or --live and
           --config are not specified, then get the IOThread data based on the current guest
           state.

       iothreadpin domain iothread cpulist [[--live] [--config] | [--current]]
           Change the pinning of a domain IOThread to host physical CPUs. In order to retrieve a
           list of all IOThreads, use iothreadinfo. To pin an iothread specify the cpulist
           desired for the IOThread ID as listed in the iothreadinfo output.

           cpulist is a list of physical CPU numbers. Its syntax is a comma separated list and a
           special markup using '-' and '^' (ex. '0-4', '0-3,^2') can also be allowed. The '-'
           denotes the range and the '^' denotes exclusive.  If you want to reset iothreadpin
           setting, that is, to pin an iothread to all physical cpus, simply specify 'r' as a
           cpulist.

           If --live is specified, affect a running guest. If the guest is not running, an error
           is returned.  If --config is specified, affect the next boot of a persistent guest.
           If --current is specified or --live and --config are not specified, affect the current
           guest state.  Both --live and --config flags may be given if cpulist is present, but
           --current is exclusive.  If no flag is specified, behavior is different depending on
           hypervisor.

           Note: The expression is sequentially evaluated, so "0-15,^8" is identical to
           "9-14,0-7,15" but not identical to "^8,0-15".

       iothreadadd domain iothread_id [[--config] [--live] | [--current]]
           Add a new IOThread to the domain using the specified iothread_id.  If the iothread_id
           already exists, the command will fail. The iothread_id must be greater than zero.

           If --live is specified, affect a running guest. If the guest is not running an error
           is returned.  If --config is specified, affect the next boot of a persistent guest.
           If --current is specified or --live and --config are not specified, affect the current
           guest state.

       iothreaddel domain iothread_id [[--config] [--live] | [--current]]
           Delete an IOThread from the domain using the specified iothread_id.  If an IOThread is
           currently assigned to a disk resource such as via the attach-disk command, then the
           attempt to remove the IOThread will fail.  If the iothread_id does not exist an error
           will occur.

           If --live is specified, affect a running guest. If the guest is not running an error
           is returned.  If --config is specified, affect the next boot of a persistent guest.
           If --current is specified or --live and --config are not specified, affect the current
           guest state.

       managedsave domain [--bypass-cache] [{--running | --paused}] [--verbose]
           Save and destroy (stop) a running domain, so it can be restarted from the same state
           at a later time.  When the virsh start command is next run for the domain, it will
           automatically be started from this saved state.  If --bypass-cache is specified, the
           save will avoid the file system cache, although this may slow down the operation.

           The progress may be monitored using domjobinfo virsh command and canceled with
           domjobabort command (sent by another virsh instance). Another option is to send SIGINT
           (usually with "Ctrl-C") to the virsh process running managedsave command. --verbose
           displays the progress of save.

           Normally, starting a managed save will decide between running or paused based on the
           state the domain was in when the save was done; passing either the --running or
           --paused flag will allow overriding which state the start should use.

           The dominfo command can be used to query whether a domain currently has any managed
           save image.

       managedsave-remove domain
           Remove the managedsave state file for a domain, if it exists.  This ensures the domain
           will do a full boot the next time it is started.

       managedsave-define domain xml [{--running | --paused}]
           Update the domain XML that will be used when domain is later started. The xml argument
           must be a file name containing the alternative XML, with changes only in the host-
           specific portions of the domain XML. For example, it can be used to change disk file
           paths.

           The managed save image records whether the domain should be started to a running or
           paused state.  Normally, this command does not alter the recorded state; passing
           either the --running or --paused flag will allow overriding which state the start
           should use.

       managedsave-dumpxml domain [--security-info]
           Extract the domain XML that was in effect at the time the saved state file file was
           created with the managedsave command.  Using --security-info will also include
           security sensitive information.

       managedsave-edit domain [{--running | --paused}]
           Edit the XML configuration associated with a saved state file of a domain was created
           by the managedsave command.

           The managed save image records whether the domain should be started to a running or
           paused state.  Normally, this command does not alter the recorded state; passing
           either the --running or --paused flag will allow overriding which state the restore
           should use.

           This is equivalent to:

            virsh managedsave-dumpxml domain-name > state-file.xml
            vi state-file.xml (or make changes with your other text editor)
            virsh managedsave-define domain-name state-file-xml

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

       maxvcpus [type]
           Provide the maximum number of virtual CPUs supported for a guest VM on this
           connection.  If provided, the type parameter must be a valid type attribute for the
           <domain> element of XML.

       cpu-stats domain [--total] [start] [count]
           Provide cpu statistics information of a domain. The domain should be running. Default
           it shows stats for all CPUs, and a total. Use --total for only the total stats, start
           for only the per-cpu stats of the CPUs from start, count for only count CPUs' stats.

       metadata domain [[--live] [--config] | [--current]] [--edit] [uri] [key] [set] [--remove]
           Show or modify custom XML metadata of a domain. The metadata is a user defined XML
           that allows to store arbitrary XML data in the domain definition.  Multiple separate
           custom metadata pieces can be stored in the domain XML.  The pieces are identified by
           a private XML namespace provided via the uri argument. (See also desc that works with
           textual metadata of a domain.)

           Flags --live or --config select whether this command works on live or persistent
           definitions of the domain. If both --live and --config are specified, the --config
           option takes precedence on getting the current description and both live configuration
           and config are updated while setting the description. --current is exclusive and
           implied if none of these was specified.

           Flag --remove specifies that the metadata element specified by the uri argument should
           be removed rather than updated.

           Flag --edit specifies that an editor with the metadata identified by the uri argument
           should be opened and the contents saved back afterwards.  Otherwise the new contents
           can be provided via the set argument.

           When setting metadata via --edit or set the key argument must be specified and is used
           to prefix the custom elements to bind them to the private namespace.

           If neither of --edit and set are specified the XML metadata corresponding to the uri
           namespace is displayed instead of being modified.

       migrate [--live] [--offline] [--direct] [--p2p [--tunnelled]] [--persistent]
       [--undefinesource] [--suspend] [--copy-storage-all] [--copy-storage-inc]
       [--change-protection] [--unsafe] [--verbose] [--rdma-pin-all] [--abort-on-error]
       [--postcopy] [--postcopy-after-precopy] domain desturi [migrateuri] [graphicsuri] [listen-
       address] [dname] [--timeout seconds [--timeout-suspend | --timeout-postcopy]] [--xml file]
       [--migrate-disks disk-list] [--disks-port port] [--compressed] [--comp-methods method-
       list] [--comp-mt-level] [--comp-mt-threads] [--comp-mt-dthreads] [--comp-xbzrle-cache]
       [--auto-converge] [auto-converge-initial] [auto-converge-increment] [--persistent-xml
       file] [--tls]
           Migrate domain to another host.  Add --live for live migration; <--p2p> for
           peer-2-peer migration; --direct for direct migration; or --tunnelled for tunnelled
           migration.  --offline migrates domain definition without starting the domain on
           destination and without stopping it on source host.  Offline migration may be used
           with inactive domains and it must be used with --persistent option.  --persistent
           leaves the domain persistent on destination host, --undefinesource undefines the
           domain on the source host, and --suspend leaves the domain paused on the destination
           host.  --copy-storage-all indicates migration with non-shared storage with full disk
           copy, --copy-storage-inc indicates migration with non-shared storage with incremental
           copy (same base image shared between source and destination).  In both cases the disk
           images have to exist on destination host, the --copy-storage-... options only tell
           libvirt to transfer data from the images on source host to the images found at the
           same place on the destination host. By default only non-shared non-readonly images are
           transferred. Use --migrate-disks to explicitly specify a list of disk targets to
           transfer via the comma separated disk-list argument. --change-protection enforces that
           no incompatible configuration changes will be made to the domain while the migration
           is underway; this flag is implicitly enabled when supported by the hypervisor, but can
           be explicitly used to reject the migration if the hypervisor lacks change protection
           support.  --verbose displays the progress of migration.  --abort-on-error cancels the
           migration if a soft error (for example I/O error) happens during the migration.
           --postcopy enables post-copy logic in migration, but does not actually start post-
           copy, i.e., migration is started in pre-copy mode.  Once migration is running, the
           user may switch to post-copy using the migrate-postcopy command sent from another
           virsh instance or use --postcopy-after-precopy along with --postcopy to let libvirt
           automatically switch to post-copy after the first pass of pre-copy is finished.

           --auto-converge forces convergence during live migration. The initial guest CPU
           throttling rate can be set with auto-converge-initial. If the initial throttling rate
           is not enough to ensure convergence, the rate is periodically increased by auto-
           converge-increment.

           --rdma-pin-all can be used with RDMA migration (i.e., when migrateuri starts with
           rdma://) to tell the hypervisor to pin all domain's memory at once before migration
           starts rather than letting it pin memory pages as needed. For QEMU/KVM this requires
           hard_limit memory tuning element (in the domain XML) to be used and set to the maximum
           memory configured for the domain plus any memory consumed by the QEMU process itself.
           Beware of setting the memory limit too high (and thus allowing the domain to lock most
           of the host's memory). Doing so may be dangerous to both the domain and the host
           itself since the host's kernel may run out of memory.

           Note: Individual hypervisors usually do not support all possible types of migration.
           For example, QEMU does not support direct migration.

           In some cases libvirt may refuse to migrate the domain because doing so may lead to
           potential problems such as data corruption, and thus the migration is considered
           unsafe. For QEMU domain, this may happen if the domain uses disks without explicitly
           setting cache mode to "none". Migrating such domains is unsafe unless the disk images
           are stored on coherent clustered filesystem, such as GFS2 or GPFS. If you are sure the
           migration is safe or you just do not care, use --unsafe to force the migration.

           dname is used for renaming the domain to new name during migration, which also usually
           can be omitted.  Likewise, --xml file is usually omitted, but can be used to supply an
           alternative XML file for use on the destination to supply a larger set of changes to
           any host-specific portions of the domain XML, such as accounting for naming
           differences between source and destination in accessing underlying storage.  If
           --persistent is enabled, --persistent-xml file can be used to supply an alternative
           XML file which will be used as the persistent domain definition on the destination
           host.

           --timeout seconds tells virsh to run a specified action when live migration exceeds
           that many seconds.  It can only be used with --live.  If --timeout-suspend is
           specified, the domain will be suspended after the timeout and the migration will
           complete offline; this is the default if no --timeout-* option is specified on the
           command line.  When --timeout-postcopy is used, virsh will switch migration from pre-
           copy to post-copy upon timeout; migration has to be started with --postcopy option for
           this to work.

           --compressed activates compression, the compression method is chosen with
           --comp-methods. Supported methods are "mt" and "xbzrle" and can be used in any
           combination. When no methods are specified, a hypervisor default methods will be used.
           QEMU defaults to "xbzrle". Compression methods can be tuned further. --comp-mt-level
           sets compression level.  Values are in range from 0 to 9, where 1 is maximum speed and
           9 is maximum compression. --comp-mt-threads and --comp-mt-dthreads set the number of
           compress threads on source and the number of decompress threads on target
           respectively. --comp-xbzrle-cache sets size of page cache in bytes.

           Providing --tls causes the migration to use the host configured TLS setup (see
           migrate_tls_x509_cert_dir in /etc/libvirt/qemu.conf) in order to perform the migration
           of the domain. Usage requires proper TLS setup for both source and target.

           Running migration can be canceled by interrupting virsh (usually using "Ctrl-C") or by
           domjobabort command sent from another virsh instance.

           The desturi and migrateuri parameters can be used to control which destination the
           migration uses.  desturi is important for managed migration, but unused for direct
           migration; migrateuri is required for direct migration, but can usually be
           automatically determined for managed migration.

           Note: The desturi parameter for normal migration and peer2peer migration has different
           semantics:

           •   normal migration: the desturi is an address of the target host as seen from the
               client machine.

           •   peer2peer migration: the desturi is an address of the target host as seen from the
               source machine.

           When migrateuri is not specified, libvirt will automatically determine the hypervisor
           specific URI.  Some hypervisors, including QEMU, have an optional "migration_host"
           configuration parameter (useful when the host has multiple network interfaces).  If
           this is unspecified, libvirt determines a name by looking up the target host's
           configured hostname.

           There are a few scenarios where specifying migrateuri may help:

           •   The configured hostname is incorrect, or DNS is broken.  If a host has a hostname
               which will not resolve to match one of its public IP addresses, then libvirt will
               generate an incorrect URI.  In this case migrateuri should be explicitly
               specified, using an IP address, or a correct hostname.

           •   The host has multiple network interfaces.  If a host has multiple network
               interfaces, it might be desirable for the migration data stream to be sent over a
               specific interface for either security or performance reasons.  In this case
               migrateuri should be explicitly specified, using an IP address associated with the
               network to be used.

           •   The firewall restricts what ports are available.  When libvirt generates a
               migration URI, it will pick a port number using hypervisor specific rules.  Some
               hypervisors only require a single port to be open in the firewalls, while others
               require a whole range of port numbers.  In the latter case migrateuri might be
               specified to choose a specific port number outside the default range in order to
               comply with local firewall policies.

           See <https://libvirt.org/migration.html#uris> for more details on migration URIs.

           Optional graphicsuri overrides connection parameters used for automatically
           reconnecting a graphical clients at the end of migration. If omitted, libvirt will
           compute the parameters based on target host IP address. In case the client does not
           have a direct access to the network virtualization hosts are connected to and needs to
           connect through a proxy, graphicsuri may be used to specify the address the client
           should connect to. The URI is formed as follows:

               protocol://hostname[:port]/[?parameters]

           where protocol is either "spice" or "vnc" and parameters is a list of protocol
           specific parameters separated by '&'. Currently recognized parameters are "tlsPort"
           and "tlsSubject". For example,

               spice://target.host.com:1234/?tlsPort=4567

           Optional listen-address sets the listen address that hypervisor on the destination
           side should bind to for incoming migration. Both IPv4 and IPv6 addresses are accepted
           as well as hostnames (the resolving is done on destination). Some hypervisors do not
           support this feature and will return an error if this parameter is used.

           Optional disks-port sets the port that hypervisor on destination side should bind to
           for incoming disks traffic. Currently it is supported only by qemu.

       migrate-setmaxdowntime domain downtime
           Set maximum tolerable downtime for a domain which is being live-migrated to another
           host.  The downtime is a number of milliseconds the guest is allowed to be down at the
           end of live migration.

       migrate-getmaxdowntime domain
           Get the maximum tolerable downtime for a domain which is being live-migrated to
           another host.  This is the number of milliseconds the guest is allowed to be down at
           the end of live migration.

       migrate-compcache domain [--size bytes]
           Sets and/or gets size of the cache (in bytes) used for compressing repeatedly
           transferred memory pages during live migration. When called without size, the command
           just prints current size of the compression cache. When size is specified, the
           hypervisor is asked to change compression cache to size bytes and then the current
           size is printed (the result may differ from the requested size due to rounding done by
           the hypervisor). The size option is supposed to be used while the domain is being
           live-migrated as a reaction to migration progress and increasing number of compression
           cache misses obtained from domjobinfo.

       migrate-setspeed domain bandwidth
           Set the maximum migration bandwidth (in MiB/s) for a domain which is being migrated to
           another host. bandwidth is interpreted as an unsigned long long value. Specifying a
           negative value results in an essentially unlimited value being provided to the
           hypervisor. The hypervisor can choose whether to reject the value or convert it to the
           maximum value allowed.

       migrate-getspeed domain
           Get the maximum migration bandwidth (in MiB/s) for a domain.

       migrate-postcopy domain
           Switch the current migration from pre-copy to post-copy. This is only supported for a
           migration started with --postcopy option.

       numatune domain [--mode mode] [--nodeset nodeset] [[--config] [--live] | [--current]]
           Set or get a domain's numa parameters, corresponding to the <numatune> element of
           domain XML.  Without flags, the current settings are displayed.

           mode can be one of `strict', `interleave' and `preferred' or any valid number from the
           virDomainNumatuneMemMode enum in case the daemon supports it.  For a running domain,
           the mode can't be changed, and the nodeset can be changed only if the domain was
           started with a mode of `strict'.

           nodeset is a list of numa nodes used by the host for running the domain.  Its syntax
           is a comma separated list, with '-' for ranges and '^' for excluding a node.

           If --live is specified, set scheduler information of a running guest.  If --config is
           specified, affect the next boot of a persistent guest.  If --current is specified,
           affect the current guest state.

       reboot domain [--mode MODE-LIST]
           Reboot a domain.  This acts just as if the domain had the reboot command run from the
           console.  The command returns as soon as it has executed the reboot action, which may
           be significantly before the domain actually reboots.

           The exact behavior of a domain when it reboots is set by the on_reboot parameter in
           the domain's XML definition.

           By default the hypervisor will try to pick a suitable shutdown method. To specify an
           alternative method, the --mode parameter can specify a comma separated list which
           includes "acpi", "agent", "initctl", "signal" and "paravirt". The order in which
           drivers will try each mode is undefined, and not related to the order specified to
           virsh.  For strict control over ordering, use a single mode at a time and repeat the
           command.

       reset domain
           Reset a domain immediately without any guest shutdown. reset emulates the power reset
           button on a machine, where all guest hardware sees the RST line set and reinitializes
           internal state.

           Note: Reset without any guest OS shutdown risks data loss.

       restore state-file [--bypass-cache] [--xml file] [{--running | --paused}]
           Restores a domain from a virsh save state file. See save for more info.

           If --bypass-cache is specified, the restore will avoid the file system cache, although
           this may slow down the operation.

           --xml file is usually omitted, but can be used to supply an alternative XML file for
           use on the restored guest with changes only in the host-specific portions of the
           domain XML.  For example, it can be used to account for file naming differences in
           underlying storage due to disk snapshots taken after the guest was saved.

           Normally, restoring a saved image will use the state recorded in the save image to
           decide between running or paused; passing either the --running or --paused flag will
           allow overriding which state the domain should be started in.

           Note: To avoid corrupting file system contents within the domain, you should not reuse
           the saved state file for a second restore unless you have also reverted all storage
           volumes back to the same contents as when the state file was created.

       save domain state-file [--bypass-cache] [--xml file] [{--running | --paused}] [--verbose]
           Saves a running domain (RAM, but not disk state) to a state file so that it can be
           restored later.  Once saved, the domain will no longer be running on the system, thus
           the memory allocated for the domain will be free for other domains to use.  virsh
           restore restores from this state file.  If --bypass-cache is specified, the save will
           avoid the file system cache, although this may slow down the operation.

           The progress may be monitored using domjobinfo virsh command and canceled with
           domjobabort command (sent by another virsh instance). Another option is to send SIGINT
           (usually with "Ctrl-C") to the virsh process running save command. --verbose displays
           the progress of save.

           This is roughly equivalent to doing a hibernate on a running computer, with all the
           same limitations.  Open network connections may be severed upon restore, as TCP
           timeouts may have expired.

           --xml file is usually omitted, but can be used to supply an alternative XML file for
           use on the restored guest with changes only in the host-specific portions of the
           domain XML.  For example, it can be used to account for file naming differences that
           are planned to be made via disk snapshots of underlying storage after the guest is
           saved.

           Normally, restoring a saved image will decide between running or paused based on the
           state the domain was in when the save was done; passing either the --running or
           --paused flag will allow overriding which state the restore should use.

           Domain saved state files assume that disk images will be unchanged between the
           creation and restore point.  For a more complete system restore point, where the disk
           state is saved alongside the memory state, see the snapshot family of commands.

       save-image-define file xml [{--running | --paused}]
           Update the domain XML that will be used when file is later used in the restore
           command.  The xml argument must be a file name containing the alternative XML, with
           changes only in the host-specific portions of the domain XML.  For example, it can be
           used to account for file naming differences resulting from creating disk snapshots of
           underlying storage after the guest was saved.

           The save image records whether the domain should be restored to a running or paused
           state.  Normally, this command does not alter the recorded state; passing either the
           --running or --paused flag will allow overriding which state the restore should use.

       save-image-dumpxml file [--security-info]
           Extract the domain XML that was in effect at the time the saved state file file was
           created with the save command.  Using --security-info will also include security
           sensitive information.

       save-image-edit file [{--running | --paused}]
           Edit the XML configuration associated with a saved state file file created by the save
           command.

           The save image records whether the domain should be restored to a running or paused
           state.  Normally, this command does not alter the recorded state; passing either the
           --running or --paused flag will allow overriding which state the restore should use.

           This is equivalent to:

            virsh save-image-dumpxml state-file > state-file.xml
            vi state-file.xml (or make changes with your other text editor)
            virsh save-image-define state-file state-file-xml

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

       schedinfo domain [[--config] [--live] | [--current]] [[--set] parameter=value]...
       schedinfo [--weight number] [--cap number] domain
           Allows you to show (and set) the domain scheduler parameters. The parameters available
           for each hypervisor are:

           LXC (posix scheduler) : cpu_shares, vcpu_period, vcpu_quota

           QEMU/KVM (posix scheduler): cpu_shares, vcpu_period, vcpu_quota, emulator_period,
           emulator_quota, iothread_quota, iothread_period

           Xen (credit scheduler): weight, cap

           ESX (allocation scheduler): reservation, limit, shares

           If --live is specified, set scheduler information of a running guest.  If --config is
           specified, affect the next boot of a persistent guest.  If --current is specified,
           affect the current guest state.

           Note: The cpu_shares parameter has a valid value range of 0-262144; Negative values
           are wrapped to positive, and larger values are capped at the maximum.  Therefore, -1
           is a useful shorthand for 262144. On the Linux kernel, the values 0 and 1 are
           automatically converted to a minimal value of 2.

           Note: The weight and cap parameters are defined only for the XEN_CREDIT scheduler.

           Note: The vcpu_period, emulator_period, and iothread_period parameters have a valid
           value range of 1000-1000000 or 0, and the vcpu_quota, emulator_quota, and
           iothread_quota parameters have a valid value range of 1000-18446744073709551 or less
           than 0. The value 0 for either parameter is the same as not specifying that parameter.

       screenshot domain [imagefilepath] [--screen screenID]
           Takes a screenshot of a current domain console and stores it into a file.  Optionally,
           if hypervisor supports more displays for a domain, screenID allows to specify which
           screen will be captured. It is the sequential number of screen. In case of multiple
           graphics cards, heads are enumerated before devices, e.g. having two graphics cards,
           both with four heads, screen ID 5 addresses the second head on the second card.

       send-key domain [--codeset codeset] [--holdtime holdtime] keycode...
           Parse the keycode sequence as keystrokes to send to domain.  Each keycode can either
           be a numeric value or a symbolic name from the corresponding codeset.  If --holdtime
           is given, each keystroke will be held for that many milliseconds.  The default codeset
           is linux, but use of the --codeset option allows other codesets to be chosen.

           If multiple keycodes are specified, they are all sent simultaneously to the guest, and
           they may be received in random order. If you need distinct keypresses, you must use
           multiple send-key invocations.

           linux
               The numeric values are those defined by the Linux generic input event subsystem.
               The symbolic names match the corresponding Linux key constant macro names.

               See virkeycode-linux(7) and virkeyname-linux(7)

           xt  The numeric values are those defined by the original XT keyboard controller. No
               symbolic names are provided

               See virkeycode-xt(7)

           atset1
               The numeric values are those defined by the AT keyboard controller, set 1 (aka XT
               compatible set). Extended keycoes from atset1 may differ from extended keycodes in
               the xt codeset. No symbolic names are provided

               See virkeycode-atset1(7)

           atset2
               The numeric values are those defined by the AT keyboard controller, set 2. No
               symbolic names are provided

               See virkeycode-atset2(7)

           atset3
               The numeric values are those defined by the AT keyboard controller, set 3 (aka
               PS/2 compatible set). No symbolic names are provided

               See virkeycode-atset3(7)

           os_x
               The numeric values are those defined by the OS-X keyboard input subsystem. The
               symbolic names match the corresponding OS-X key constant macro names

               See virkeycode-osx(7) and virkeyname-osx(7)

           xt_kbd
               The numeric values are those defined by the Linux KBD device.  These are a variant
               on the original XT codeset, but often with different encoding for extended
               keycodes. No symbolic names are provided.

               See virkeycode-xtkbd(7)

           win32
               The numeric values are those defined by the Win32 keyboard input subsystem. The
               symbolic names match the corresponding Win32 key constant macro names

               See virkeycode-win32(7) and virkeyname-win32(7)

           usb The numeric values are those defined by the USB HID specification for keyboard
               input. No symbolic names are provided

               See virkeycode-usb(7)

           rfb The numeric values are those defined by the RFB extension for sending raw
               keycodes. These are a variant on the XT codeset, but extended keycodes have the
               low bit of the second byte set, instead of the high bit of the first byte. No
               symbolic names are provided.

               See virkeycode-rfb(7)

           Examples
             # send three strokes 'k', 'e', 'y', using xt codeset. these
             # are all pressed simultaneously and may be received by the guest
             # in random order
             virsh send-key dom --codeset xt 37 18 21

             # send one stroke 'right-ctrl+C'
             virsh send-key dom KEY_RIGHTCTRL KEY_C

             # send a tab, held for 1 second
             virsh send-key --holdtime 1000 0xf

       send-process-signal domain-id pid signame
           Send a signal signame to the process identified by pid running in the virtual domain
           domain-id. The pid is a process ID in the virtual domain namespace.

           The signame argument may be either an integer signal constant number, or one of the
           symbolic names:

               "nop", "hup", "int", "quit", "ill",
               "trap", "abrt", "bus", "fpe", "kill",
               "usr1", "segv", "usr2", "pipe", "alrm",
               "term", "stkflt", "chld", "cont", "stop",
               "tstp", "ttin", "ttou", "urg", "xcpu",
               "xfsz", "vtalrm", "prof", "winch", "poll",
               "pwr", "sys", "rt0", "rt1", "rt2", "rt3",
               "rt4", "rt5", "rt6", "rt7", "rt8", "rt9",
               "rt10", "rt11", "rt12", "rt13", "rt14", "rt15",
               "rt16", "rt17", "rt18", "rt19", "rt20", "rt21",
               "rt22", "rt23", "rt24", "rt25", "rt26", "rt27",
               "rt28", "rt29", "rt30", "rt31", "rt32"

           The symbol name may optionally be prefixed with 'sig' or 'sig_' and may be in
           uppercase or lowercase.

           Examples
             virsh send-process-signal myguest 1 15
             virsh send-process-signal myguest 1 term
             virsh send-process-signal myguest 1 sigterm
             virsh send-process-signal myguest 1 SIG_HUP

       setmem domain size [[--config] [--live] | [--current]]
           Change the memory allocation for a guest domain.  If --live is specified, perform a
           memory balloon of a running guest.  If --config is specified, affect the next boot of
           a persistent guest.  If --current is specified, affect the current guest state.  Both
           --live and --config flags may be given, but --current is exclusive. If no flag is
           specified, behavior is different depending on hypervisor.

           size is a scaled integer (see NOTES above); it defaults to kibibytes (blocks of 1024
           bytes) unless you provide a suffix (and the older option name --kilobytes is available
           as a deprecated synonym) .  Libvirt rounds up to the nearest kibibyte.  Some
           hypervisors require a larger granularity than KiB, and requests that are not an even
           multiple will be rounded up.  For example, vSphere/ESX rounds the parameter up to
           mebibytes (1024 kibibytes).

           For Xen, you can only adjust the memory of a running domain if the domain is
           paravirtualized or running the PV balloon driver.

           For LXC, the value being set is the cgroups value for limit_in_bytes or the maximum
           amount of user memory (including file cache). When viewing memory inside the
           container, this is the /proc/meminfo "MemTotal" value. When viewing the value from the
           host, use the virsh memtune command. In order to view the current memory in use and
           the maximum value allowed to set memory, use the virsh dominfo command.

       set-lifecycle-action domain type action [[--config] [--live] | [--current]]
           Set the lifecycle action for specified lifecycle type. For the list of lifecycle types
           and actions and possible combinations see the documentation at
           <https://libvirt.org/formatdomain.html#elementsEvents>.

       set-user-password domain user password [--encrypted]
           Set the password for the user account in the guest domain.

           If --encrypted is specified, the password is assumed to be already encrypted by the
           method required by the guest OS.

           For QEMU/KVM, this requires the guest agent to be configured and running.

       setmaxmem domain size [[--config] [--live] | [--current]]
           Change the maximum memory allocation limit for a guest domain.  If --live is
           specified, affect a running guest.  If --config is specified, affect the next boot of
           a persistent guest.  If --current is specified, affect the current guest state.  Both
           --live and --config flags may be given, but --current is exclusive. If no flag is
           specified, behavior is different depending on hypervisor.

           Some hypervisors such as QEMU/KVM don't support live changes (especially increasing)
           of the maximum memory limit.  Even persistent configuration changes might not be
           performed with some hypervisors/configuration (e.g. on NUMA enabled domains on QEMU).
           For complex configuration changes use command edit instead).

           size is a scaled integer (see NOTES above); it defaults to kibibytes (blocks of 1024
           bytes) unless you provide a suffix (and the older option name --kilobytes is available
           as a deprecated synonym) .  Libvirt rounds up to the nearest kibibyte.  Some
           hypervisors require a larger granularity than KiB, and requests that are not an even
           multiple will be rounded up.  For example, vSphere/ESX rounds the parameter up to
           mebibytes (1024 kibibytes).

       memtune domain [--hard-limit size] [--soft-limit size] [--swap-hard-limit size]
       [--min-guarantee size] [[--config] [--live] | [--current]]
           Allows you to display or set the domain memory parameters. Without flags, the current
           settings are displayed; with a flag, the appropriate limit is adjusted if supported by
           the hypervisor.  LXC and QEMU/KVM support --hard-limit, --soft-limit, and
           --swap-hard-limit.  --min-guarantee is supported only by ESX hypervisor.  Each of
           these limits are scaled integers (see NOTES above), with a default of kibibytes
           (blocks of 1024 bytes) if no suffix is present. Libvirt rounds up to the nearest
           kibibyte.  Some hypervisors require a larger granularity than KiB, and requests that
           are not an even multiple will be rounded up.  For example, vSphere/ESX rounds the
           parameter up to mebibytes (1024 kibibytes).

           If --live is specified, affect a running guest.  If --config is specified, affect the
           next boot of a persistent guest.  If --current is specified, affect the current guest
           state.  Both --live and --config flags may be given, but --current is exclusive. If no
           flag is specified, behavior is different depending on hypervisor.

           For QEMU/KVM, the parameters are applied to the QEMU process as a whole.  Thus, when
           counting them, one needs to add up guest RAM, guest video RAM, and some memory
           overhead of QEMU itself.  The last piece is hard to determine so one needs guess and
           try.

           For LXC, the displayed hard_limit value is the current memory setting from the XML or
           the results from a virsh setmem command.

           --hard-limit
               The maximum memory the guest can use.

           --soft-limit
               The memory limit to enforce during memory contention.

           --swap-hard-limit
               The maximum memory plus swap the guest can use.  This has to be more than hard-
               limit value provided.

           --min-guarantee
               The guaranteed minimum memory allocation for the guest.

           Specifying -1 as a value for these limits is interpreted as unlimited.

       perf domain [--enable eventSpec] [--disable eventSpec] [[--config] [--live] | [--current]]
           Get the current perf events setting or enable/disable specific perf events for a guest
           domain.

           Perf is a performance analyzing tool in Linux, and it can instrument CPU performance
           counters, tracepoints, kprobes, and uprobes (dynamic tracing). Perf supports a list of
           measurable events, and can measure events coming from different sources. For instance,
           some event are pure kernel counters, in this case they are called software events,
           including context-switches, minor-faults, etc.. Now dozens of events from different
           sources can be supported by perf.

           Currently only QEMU/KVM supports this command. The --enable and --disable option
           combined with eventSpec can be used to enable or disable specific performance event.
           eventSpec is a string list of one or more events separated by commas. Valid event
           names are as follows:

           Valid perf event names
             cmt              - A PQos (Platform Qos) feature to monitor the
                                usage of cache by applications running on the
                                platform.
             mbmt             - Provides a way to monitor the total system
                                memory bandwidth between one level of cache
                                and another.
             mbml             - Provides a way to limit the amount of data
                                (bytes/s) send through the memory controller
                                on the socket.
             cache_misses     - Provides the count of cache misses by
                                applications running on the platform.
             cache_references - Provides the count of cache hits by
                                applications running on th e platform.
             instructions     - Provides the count of instructions executed
                                by applications running on the platform.
             cpu_cycles       - Provides the count of cpu cycles
                                (total/elapsed). May be used with
                                instructions in order to get a cycles
                                per instruction.
             branch_instructions - Provides the count of branch instructions
                                   executed by applications running on the
                                   platform.
             branch_misses    - Provides the count of branch misses executed
                                by applications running on the platform.
             bus_cycles       - Provides the count of bus cycles executed
                                by applications running on the platform.
             stalled_cycles_frontend - Provides the count of stalled cpu
                                       cycles in the frontend of the
                                       instruction processor pipeline by
                                       applications running on the platform.
             stalled_cycles_backend - Provides the count of stalled cpu
                                      cycles in the backend of the
                                      instruction processor pipeline by
                                      applications running on the platform.
             ref_cpu_cycles   -  Provides the count of total cpu cycles
                                 not affected by CPU frequency scaling by
                                 applications running on the platform.
             cpu_clock - Provides the cpu clock time consumed by
                         applications running on the platform.
             task_clock - Provides the task clock time consumed by
                          applications running on the platform.
             page_faults - Provides the count of page faults by
                           applications running on the platform.
             context_switches - Provides the count of context switches
                                by applications running on the platform.
             cpu_migrations - Provides the count cpu migrations by
                              applications running on the platform.
             page_faults_min - Provides the count minor page faults
                               by applications running on the platform.
             page_faults_maj - Provides the count major page faults
                               by applications running on the platform.
             alignment_faults - Provides the count alignment faults
                                by applications running on the platform.
             emulation_faults - Provides the count emulation faults
                                by applications running on the platform.

           Note: The statistics can be retrieved using the domstats command using the --perf
           flag.

           If --live is specified, affect a running guest.  If --config is specified, affect the
           next boot of a persistent guest.  If --current is specified, affect the current guest
           state.  Both --live and --config flags may be given, but --current is exclusive. If no
           flag is specified, behavior is different depending on hypervisor.

       blkiotune domain [--weight weight] [--device-weights device-weights]
       [--device-read-iops-sec device-read-iops-sec] [--device-write-iops-sec device-write-iops-
       sec] [--device-read-bytes-sec device-read-bytes-sec] [--device-write-bytes-sec device-
       write-bytes-sec] [[--config] [--live] | [--current]]
           Display or set the blkio parameters. QEMU/KVM supports --weight.  --weight is in range
           [100, 1000]. After kernel 2.6.39, the value could be in the range [10, 1000].

           device-weights is a single string listing one or more device/weight pairs, in the
           format of /path/to/device,weight,/path/to/device,weight.  Each weight is in the range
           [100, 1000], [10, 1000] after kernel 2.6.39, or the value 0 to remove that device from
           per-device listings.  Only the devices listed in the string are modified; any existing
           per-device weights for other devices remain unchanged.

           device-read-iops-sec is a single string listing one or more device/read_iops_sec
           pairs, int the format of /path/to/device,read_iops_sec,/path/to/device,read_iops_sec.
           Each read_iops_sec is a number which type is unsigned int, value 0 to remove that
           device from per-device listing.  Only the devices listed in the string are modified;
           any existing per-device read_iops_sec for other devices remain unchanged.

           device-write-iops-sec is a single string listing one or more device/write_iops_sec
           pairs, int the format of
           /path/to/device,write_iops_sec,/path/to/device,write_iops_sec.  Each write_iops_sec is
           a number which type is unsigned int, value 0 to remove that device from per-device
           listing.  Only the devices listed in the string are modified; any existing per-device
           write_iops_sec for other devices remain unchanged.

           device-read-bytes-sec is a single string listing one or more device/read_bytes_sec
           pairs, int the format of
           /path/to/device,read_bytes_sec,/path/to/device,read_bytes_sec.  Each read_bytes_sec is
           a number which type is unsigned long long, value 0 to remove that device from per-
           device listing.  Only the devices listed in the string are modified; any existing per-
           device read_bytes_sec for other devices remain unchanged.

           device-write-bytes-sec is a single string listing one or more device/write_bytes_sec
           pairs, int the format of
           /path/to/device,write_bytes_sec,/path/to/device,write_bytes_sec.  Each write_bytes_sec
           is a number which type is unsigned long long, value 0 to remove that device from per-
           device listing.  Only the devices listed in the string are modified; any existing per-
           device write_bytes_sec for other devices remain unchanged.

           If --live is specified, affect a running guest.  If --config is specified, affect the
           next boot of a persistent guest.  If --current is specified, affect the current guest
           state.  Both --live and --config flags may be given, but --current is exclusive. If no
           flag is specified, behavior is different depending on hypervisor.

       setvcpus domain count [--maximum] [[--config] [--live] | [--current]] [--guest]
       [--hotpluggable]
           Change the number of virtual CPUs active in a guest domain.  By default, this command
           works on active guest domains.  To change the settings for an inactive guest domain,
           use the --config flag.

           The count value may be limited by host, hypervisor, or a limit coming from the
           original description of the guest domain. For Xen, you can only adjust the virtual
           CPUs of a running domain if the domain is paravirtualized.

           If the --config flag is specified, the change is made to the stored XML configuration
           for the guest domain, and will only take effect when the guest domain is next started.

           If --live is specified, the guest domain must be active, and the change takes place
           immediately.  Both the --config and --live flags may be specified together if
           supported by the hypervisor.  If this command is run before the guest has finished
           booting, the guest may fail to process the change.

           If --current is specified, affect the current guest state.

           When no flags are given, the --live flag is assumed and the guest domain must be
           active.  In this situation it is up to the hypervisor whether the --config flag is
           also assumed, and therefore whether the XML configuration is adjusted to make the
           change persistent.

           If --guest is specified, then the count of cpus is modified in the guest instead of
           the hypervisor. This flag is usable only for live domains and may require guest agent
           to be configured in the guest.

           To allow adding vcpus to persistent definitions that can be later hotunplugged after
           the domain is booted it is necessary to specify the --hotpluggable flag. Vcpus added
           to live domains supporting vcpu unplug are automatically marked as hotpluggable.

           The --maximum flag controls the maximum number of virtual cpus that can be hot-plugged
           the next time the domain is booted.  As such, it must only be used with the --config
           flag, and not with the --live or the --current flag. Note that it may not be possible
           to change the maximum vcpu count if the processor topology is specified for the guest.

       setvcpu domain vcpulist [--enable] | [--disable] [[--live] [--config] | [--current]]
           Change state of individual vCPUs using hot(un)plug mechanism.

           See vcpupin for information on format of vcpulist. Hypervisor drivers may require that
           vcpulist contains exactly vCPUs belonging to one hotpluggable entity. This is usually
           just a single vCPU but certain architectures such as ppc64 require a full core to be
           specified at once.

           Note that hypervisors may refuse to disable certain vcpus such as vcpu 0 or others.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state. This is the default. Both --live and --config flags may be given, but
           --current is exclusive.

       shutdown domain [--mode MODE-LIST]
           Gracefully shuts down a domain.  This coordinates with the domain OS to perform
           graceful shutdown, so there is no guarantee that it will succeed, and may take a
           variable length of time depending on what services must be shutdown in the domain.

           The exact behavior of a domain when it shuts down is set by the on_poweroff parameter
           in the domain's XML definition.

           If domain is transient, then the metadata of any snapshots will be lost once the guest
           stops running, but the snapshot contents still exist, and a new domain with the same
           name and UUID can restore the snapshot metadata with snapshot-create.

           By default the hypervisor will try to pick a suitable shutdown method. To specify an
           alternative method, the --mode parameter can specify a comma separated list which
           includes "acpi", "agent", "initctl", "signal" and "paravirt". The order in which
           drivers will try each mode is undefined, and not related to the order specified to
           virsh.  For strict control over ordering, use a single mode at a time and repeat the
           command.

       start domain-name-or-uuid [--console] [--paused] [--autodestroy] [--bypass-cache]
       [--force-boot] [--pass-fds N,M,...]
           Start a (previously defined) inactive domain, either from the last managedsave state,
           or via a fresh boot if no managedsave state is present.  The domain will be paused if
           the --paused option is used and supported by the driver; otherwise it will be running.
           If --console is requested, attach to the console after creation.  If --autodestroy is
           requested, then the guest will be automatically destroyed when virsh closes its
           connection to libvirt, or otherwise exits.  If --bypass-cache is specified, and
           managedsave state exists, the restore will avoid the file system cache, although this
           may slow down the operation.  If --force-boot is specified, then any managedsave state
           is discarded and a fresh boot occurs.

           If --pass-fds is specified, the argument is a comma separated list of open file
           descriptors which should be pass on into the guest. The file descriptors will be re-
           numbered in the guest, starting from 3. This is only supported with container based
           virtualization.

       suspend domain
           Suspend a running domain. It is kept in memory but won't be scheduled anymore.

       resume domain
           Moves a domain out of the suspended state.  This will allow a previously suspended
           domain to now be eligible for scheduling by the underlying hypervisor.

       dompmsuspend domain target [--duration]
           Suspend a running domain into one of these states (possible target values):
               mem equivalent of S3 ACPI state
               disk equivalent of S4 ACPI state
               hybrid RAM is saved to disk but not powered off

           The --duration argument specifies number of seconds before the domain is woken up
           after it was suspended (see also dompmwakeup). Default is 0 for unlimited suspend
           time. (This feature isn't currently supported by any hypervisor driver and 0 should be
           used.).

           Note that this command requires a guest agent configured and running in the domain's
           guest OS.

           Beware that at least for QEMU, the domain's process will be terminated when target
           disk is used and a new process will be launched when libvirt is asked to wake up the
           domain. As a result of this, any runtime changes, such as device hotplug or memory
           settings, are lost unless such changes were made with --config flag.

       dompmwakeup domain
           Wakeup a domain from pmsuspended state (either suspended by dompmsuspend or from the
           guest itself). Injects a wakeup into the guest that is in pmsuspended state, rather
           than waiting for the previously requested duration (if any) to elapse. This operation
           doesn't not necessarily fail if the domain is running.

       ttyconsole domain
           Output the device used for the TTY console of the domain. If the information is not
           available the processes will provide an exit code of 1.

       undefine domain [--managed-save] [--snapshots-metadata] [--nvram] [--keep-nvram] [
       {--storage volumes | --remove-all-storage [--delete-snapshots]} --wipe-storage]
           Undefine a domain. If the domain is running, this converts it to a transient domain,
           without stopping it. If the domain is inactive, the domain configuration is removed.

           The --managed-save flag guarantees that any managed save image (see the managedsave
           command) is also cleaned up.  Without the flag, attempts to undefine a domain with a
           managed save image will fail.

           The --snapshots-metadata flag guarantees that any snapshots (see the snapshot-list
           command) are also cleaned up when undefining an inactive domain.  Without the flag,
           attempts to undefine an inactive domain with snapshot metadata will fail.  If the
           domain is active, this flag is ignored.

           --nvram and --keep-nvram specify accordingly to delete or keep nvram
           (/domain/os/nvram/) file. If the domain has an nvram file and the flags are omitted,
           the undefine will fail.

           The --storage flag takes a parameter volumes, which is a comma separated list of
           volume target names or source paths of storage volumes to be removed along with the
           undefined domain. Volumes can be undefined and thus removed only on inactive domains.
           Volume deletion is only attempted after the domain is undefined; if not all of the
           requested volumes could be deleted, the error message indicates what still remains
           behind. If a volume path is not found in the domain definition, it's treated as if the
           volume was successfully deleted. Only volumes managed by libvirt in storage pools can
           be removed this way.  (See domblklist for list of target names associated to a
           domain).  Example: --storage vda,/path/to/storage.img

           The --remove-all-storage flag specifies that all of the domain's storage volumes
           should be deleted.

           The --delete-snapshots flag specifies that any snapshots associated with the storage
           volume should be deleted as well. Requires the --remove-all-storage flag to be
           provided. Not all storage drivers support this option, presently only rbd.

           The flag --wipe-storage specifies that the storage volumes should be wiped before
           removal.

           NOTE: For an inactive domain, the domain name or UUID must be used as the domain.

       vcpucount domain  [{--maximum | --active} {--config | --live | --current}] [--guest]
           Print information about the virtual cpu counts of the given domain.  If no flags are
           specified, all possible counts are listed in a table; otherwise, the output is limited
           to just the numeric value requested.  For historical reasons, the table lists the
           label "current" on the rows that can be queried in isolation via the --active flag,
           rather than relating to the --current flag.

           --maximum requests information on the maximum cap of vcpus that a domain can add via
           setvcpus, while --active shows the current usage; these two flags cannot both be
           specified.  --config requires a persistent domain and requests information regarding
           the next time the domain will be booted, --live requires a running domain and lists
           current values, and --current queries according to the current state of the domain
           (corresponding to --live if running, or --config if inactive); these three flags are
           mutually exclusive.

           If --guest is specified, then the count of cpus is reported from the perspective of
           the guest. This flag is usable only for live domains and may require guest agent to be
           configured in the guest.

       vcpuinfo domain [--pretty]
           Returns basic information about the domain virtual CPUs, like the number of vCPUs, the
           running time, the affinity to physical processors.

           With --pretty, cpu affinities are shown as ranges.

           An example output is

            $ virsh vcpuinfo fedora
            VCPU:           0
            CPU:            0
            State:          running
            CPU time:       7,0s
            CPU Affinity:   yyyy

            VCPU:           1
            CPU:            1
            State:          running
            CPU time:       0,7s
            CPU Affinity:   yyyy

           STATES

           The State field displays the current operating state of a virtual CPU

           offline
               The virtual CPU is offline and not usable by the domain.  This state is not
               supported by all hypervisors.

           running
               The virtual CPU is available to the domain and is operating.

           blocked
               The virtual CPU is available to the domain but is waiting for a resource.  This
               state is not supported by all hypervisors, in which case running may be reported
               instead.

           no state
               The virtual CPU state could not be determined. This could happen if the hypervisor
               is newer than virsh.

           N/A There's no information about the virtual CPU state available. This can be the case
               if the domain is not running or the hypervisor does not report the virtual CPU
               state.

       vcpupin domain [vcpu] [cpulist] [[--live] [--config] | [--current]]
           Query or change the pinning of domain VCPUs to host physical CPUs.  To pin a single
           vcpu, specify cpulist; otherwise, you can query one vcpu or omit vcpu to list all at
           once.

           cpulist is a list of physical CPU numbers. Its syntax is a comma separated list and a
           special markup using '-' and '^' (ex. '0-4', '0-3,^2') can also be allowed. The '-'
           denotes the range and the '^' denotes exclusive.  For pinning the vcpu to all physical
           cpus specify 'r' as a cpulist.  If --live is specified, affect a running guest.  If
           --config is specified, affect the next boot of a persistent guest.  If --current is
           specified, affect the current guest state.  Both --live and --config flags may be
           given if cpulist is present, but --current is exclusive.  If no flag is specified,
           behavior is different depending on hypervisor.

           Note: The expression is sequentially evaluated, so "0-15,^8" is identical to
           "9-14,0-7,15" but not identical to "^8,0-15".

       emulatorpin domain [cpulist] [[--live] [--config] | [--current]]
           Query or change the pinning of domain's emulator threads to host physical CPUs.

           See vcpupin for cpulist.

           If --live is specified, affect a running guest.  If --config is specified, affect the
           next boot of a persistent guest.  If --current is specified, affect the current guest
           state.  Both --live and --config flags may be given if cpulist is present, but
           --current is exclusive.  If no flag is specified, behavior is different depending on
           hypervisor.

       guestvcpus domain [[--enable] | [--disable]] [cpulist]
           Query or change state of vCPUs from guest's point of view using the guest agent.  When
           invoked without cpulist the guest is queried for available guest vCPUs, their state
           and possibility to be offlined.

           If cpulist is provided then one of --enable or --disable must be provided too. The
           desired operation is then executed on the domain.

           See vcpupin for information on cpulist.

       vncdisplay domain
           Output the IP address and port number for the VNC display. If the information is not
           available the processes will provide an exit code of 1.

DEVICE COMMANDS

       The following commands manipulate devices associated to domains.  The domain can be
       specified as a short integer, a name or a full UUID.  To better understand the values
       allowed as options for the command reading the documentation at
       <https://libvirt.org/formatdomain.html> on the format of the device sections to get the
       most accurate set of accepted values.

       attach-device domain FILE [[[--live] [--config] | [--current]] | [--persistent]]
           Attach a device to the domain, using a device definition in an XML file using a device
           definition element such as <disk> or <interface> as the top-level element.  See the
           documentation at <https://libvirt.org/formatdomain.html#elementsDevices> to learn
           about libvirt XML format for a device.  If --config is specified the command alters
           the persistent domain configuration with the device attach taking effect the next time
           libvirt starts the domain.  For cdrom and floppy devices, this command only replaces
           the media within an existing device; consider using update-device for this usage.  For
           passthrough host devices, see also nodedev-detach, needed if the PCI device does not
           use managed mode.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive. When no flag is specified legacy API is used whose behavior depends on the
           hypervisor driver.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.

           Note: using of partial device definition XML files may lead to unexpected results as
           some fields may be autogenerated and thus match devices other than expected.

       attach-disk domain source target [[[--live] [--config] | [--current]] | [--persistent]]
       [--targetbus bus] [--driver driver] [--subdriver subdriver] [--iothread iothread] [--cache
       cache] [--io io] [--type type] [--mode mode] [--sourcetype sourcetype] [--serial serial]
       [--wwn wwn] [--rawio] [--address address] [--multifunction] [--print-xml]
           Attach a new disk device to the domain.  source is path for the files and devices.
           target controls the bus or device under which the disk is exposed to the guest OS. It
           indicates the "logical" device name; the optional targetbus attribute specifies the
           type of disk device to emulate; possible values are driver specific, with typical
           values being ide, scsi, virtio, xen, usb, sata, or sd, if omitted, the bus type is
           inferred from the style of the device name (e.g.  a device named 'sda' will typically
           be exported using a SCSI bus).  driver can be file, tap or phy for the Xen hypervisor
           depending on the kind of access; or qemu for the QEMU emulator.  Further details to
           the driver can be passed using subdriver. For Xen subdriver can be aio, while for QEMU
           subdriver should match the format of the disk source, such as raw or qcow2.
           Hypervisor default will be used if subdriver is not specified.  However, the default
           may not be correct, esp. for QEMU as for security reasons it is configured not to
           detect disk formats.  type can indicate lun, cdrom or floppy as alternative to the
           disk default, although this use only replaces the media within the existing virtual
           cdrom or floppy device; consider using update-device for this usage instead.  mode can
           specify the two specific mode readonly or shareable.  sourcetype can indicate the type
           of source (block|file) cache can be one of "default", "none", "writethrough",
           "writeback", "directsync" or "unsafe".  io controls specific policies on I/O; QEMU
           guests support "threads" and "native".  iothread is the number within the range of
           domain IOThreads to which this disk may be attached (QEMU only).  serial is the serial
           of disk device. wwn is the wwn of disk device.  rawio indicates the disk needs rawio
           capability.  address is the address of disk device in the form of
           pci:domain.bus.slot.function, scsi:controller.bus.unit, ide:controller.bus.unit or
           ccw:cssid.ssid.devno.  Virtio-ccw devices must have their cssid set to 0xfe.
           multifunction indicates specified pci address is a multifunction pci device address.

           If --print-xml is specified, then the XML of the disk that would be attached is
           printed instead.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive. When no flag is specified legacy API is used whose behavior depends on the
           hypervisor driver.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.  Likewise, --shareable is an alias for
           --mode shareable.

       attach-interface domain type source [[[--live] [--config] | [--current]] | [--persistent]]
       [--target target] [--mac mac] [--script script] [--model model] [--inbound
       average,peak,burst,floor] [--outbound average,peak,burst] [--managed] [--print-xml]
           Attach a new network interface to the domain.

           type can be one of the:

               network to indicate connection via a libvirt virtual network,

               bridge to indicate connection via a bridge device on the host,

               direct to indicate connection directly to one of the host's network interfaces or
               bridges,

               hostdev to indicate connection using a passthrough of PCI device on the host.

           source indicates the source of the connection.  The source depends on the type of the
           interface:

               network name of the virtual network,

               bridge the name of the bridge device,

               direct the name of the host's interface or bridge,

               hostdev the PCI address of the host's interface formatted as
               domain:bus:slot.function.

           --target is used to specify the tap/macvtap device to be used to connect the domain to
           the source.  Names starting with 'vnet' are considered as auto-generated and are
           blanked out/regenerated each time the interface is attached.

           --mac specifies the MAC address of the network interface; if a MAC address is not
           given, a new address will be automatically generated (and stored in the persistent
           configuration if "--config" is given on the command line).

           --script is used to specify a path to a custom script to be called while attaching to
           a bridge - this will be called instead of the default script not in addition to it.
           This is valid only for interfaces of bridge type and only for Xen domains.

           --model specifies the network device model to be presented to the domain.

           --inbound and --outbound control the bandwidth of the interface.  At least one from
           the average, floor pair must be specified.  The other two peak and burst are optional,
           so "average,peak", "average,,burst", "average,,,floor", "average" and ",,,floor" are
           also legal.  Values for average, floor and peak are expressed in kilobytes per second,
           while burst is expressed in kilobytes in a single burst at peak speed as described in
           the Network XML documentation at <https://libvirt.org/formatnetwork.html#elementQoS>.

           --managed is usable only for hostdev type and tells libvirt that the interface should
           be managed, which means detached and reattached from/to the host by libvirt.

           If --print-xml is specified, then the XML of the interface that would be attached is
           printed instead.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive.  When no flag is specified legacy API is used whose behavior depends on the
           hypervisor driver.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.

           Note: the optional target value is the name of a device to be created as the back-end
           on the node.  If not provided a device named "vnetN" or "vifN" will be created
           automatically.

       detach-device domain FILE [[[--live] [--config] | [--current]] | [--persistent]]
           Detach a device from the domain, takes the same kind of XML descriptions as command
           attach-device.  For passthrough host devices, see also nodedev-reattach, needed if the
           device does not use managed mode.

           Note: The supplied XML description of the device should be as specific as its
           definition in the domain XML. The set of attributes used to match the device are
           internal to the drivers. Using a partial definition, or attempting to detach a device
           that is not present in the domain XML, but shares some specific attributes with one
           that is present, may lead to unexpected results.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive. When no flag is specified legacy API is used whose behavior depends on the
           hypervisor driver.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.

           Note that older versions of virsh used --config as an alias for --persistent.

       detach-disk domain target [[[--live] [--config] | [--current]] | [--persistent]]
           Detach a disk device from a domain. The target is the device as seen from the domain.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive. When no flag is specified legacy API is used whose behavior depends on the
           hypervisor driver.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.

           Note that older versions of virsh used --config as an alias for --persistent.

       detach-interface domain type [--mac mac] [[[--live] [--config] | [--current]] |
       [--persistent]]
           Detach a network interface from a domain.  type can be either network to indicate a
           physical network device or bridge to indicate a bridge to a device. It is recommended
           to use the mac option to distinguish between the interfaces if more than one are
           present on the domain.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive. When no flag is specified legacy API is used whose behavior depends on the
           hypervisor driver.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.

           Note that older versions of virsh used --config as an alias for --persistent.

       update-device domain file [--force] [[[--live] [--config] | [--current]] | [--persistent]]
           Update the characteristics of a device associated with domain, based on the device
           definition in an XML file.  The --force option can be used to force device update,
           e.g., to eject a CD-ROM even if it is locked/mounted in the domain. See the
           documentation at <https://libvirt.org/formatdomain.html#elementsDevices> to learn
           about libvirt XML format for a device.

           If --live is specified, affect a running domain.  If --config is specified, affect the
           next startup of a persistent domain.  If --current is specified, affect the current
           domain state.  Both --live and --config flags may be given, but --current is
           exclusive. Not specifying any flag is the same as specifying --current.

           For compatibility purposes, --persistent behaves like --config for an offline domain,
           and like --live --config for a running domain.

           Note that older versions of virsh used --config as an alias for --persistent.

           Note: using of partial device definition XML files may lead to unexpected results as
           some fields may be autogenerated and thus match devices other than expected.

       change-media domain path [--eject] [--insert] [--update] [source] [--force] [[--live]
       [--config] | [--current]] [--print-xml] [--block]
           Change media of CDROM or floppy drive. path can be the fully-qualified path or the
           unique target name (<target dev='hdc'>) of the disk device. source specifies the path
           of the media to be inserted or updated. Flag --block allows to set the backing type in
           case a block device is used as media for the CDROM or floppy drive instead of a file.

           --eject indicates the media will be ejected.  --insert indicates the media will be
           inserted. source must be specified.  If the device has source (e.g. <source
           file='media'>), and source is not specified, --update is equal to --eject. If the
           device has no source, and source is specified, --update is equal to --insert. If the
           device has source, and source is specified, --update behaves like combination of
           --eject and --insert.  If none of --eject, --insert, and --update is specified,
           --update is used by default.  The --force option can be used to force media changing.
           If --live is specified, alter live configuration of running guest.  If --config is
           specified, alter persistent configuration, effect observed on next boot.  --current
           can be either or both of live and config, depends on the hypervisor's implementation.
           Both --live and --config flags may be given, but --current is exclusive. If no flag is
           specified, behavior is different depending on hypervisor.  If --print-xml is
           specified, the XML that would be used to change media is printed instead of changing
           the media.

NODEDEV COMMANDS

       The following commands manipulate host devices that are intended to be passed through to
       guest domains via <hostdev> elements in a domain's <devices> section.  A node device key
       is generally specified by the bus name followed by its address, using underscores between
       all components, such as pci_0000_00_02_1, usb_1_5_3, or net_eth1_00_27_13_6a_fe_00.  The
       nodedev-list gives the full list of host devices that are known to libvirt, although this
       includes devices that cannot be assigned to a guest (for example, attempting to detach the
       PCI device that controls the host's hard disk controller where the guest's disk images
       live could cause the host system to lock up or reboot).

       For more information on node device definition see: <https://libvirt.org/formatnode.html>.

       Passthrough devices cannot be simultaneously used by the host and its guest domains, nor
       by multiple active guests at once.  If the <hostdev> description of a PCI device includes
       the attribute managed='yes', and the hypervisor driver supports it, then the device is in
       managed mode, and attempts to use that passthrough device in an active guest will
       automatically behave as if nodedev-detach (guest start, device hot-plug) and nodedev-
       reattach (guest stop, device hot-unplug) were called at the right points.  If a PCI device
       is not marked as managed, then it must manually be detached before guests can use it, and
       manually reattached to be returned to the host.  Also, if a device is manually detached,
       then the host does not regain control of the device without a matching reattach, even if
       the guests use the device in managed mode.

       nodedev-create FILE
           Create a device on the host node that can then be assigned to virtual machines.
           Normally, libvirt is able to automatically determine which host nodes are available
           for use, but this allows registration of host hardware that libvirt did not
           automatically detect.  file contains xml for a top-level <device> description of a
           node device.

       nodedev-destroy device
           Destroy (stop) a device on the host. device can be either device name or wwn pair in
           "wwnn,wwpn" format (only works for vHBA currently).  Note that this makes libvirt quit
           managing a host device, and may even make that device unusable by the rest of the
           physical host until a reboot.

       nodedev-detach nodedev [--driver backend_driver]
           Detach nodedev from the host, so that it can safely be used by guests via <hostdev>
           passthrough.  This is reversed with nodedev-reattach, and is done automatically for
           managed devices.

           Different backend drivers expect the device to be bound to different dummy devices.
           For example, QEMU's "kvm" backend driver (the default) expects the device to be bound
           to pci-stub, but its "vfio" backend driver expects the device to be bound to vfio-pci.
           The --driver parameter can be used to specify the desired backend driver.

       nodedev-dumpxml device
           Dump a <device> XML representation for the given node device, including such
           information as the device name, which bus owns the device, the vendor and product id,
           and any capabilities of the device usable by libvirt (such as whether device reset is
           supported). device can be either device name or wwn pair in "wwnn,wwpn" format (only
           works for HBA).

       nodedev-list cap --tree
           List all of the devices available on the node that are known by libvirt.  cap is used
           to filter the list by capability types, the types must be separated by comma, e.g.
           --cap pci,scsi. Valid capability types include 'system', 'pci', 'usb_device', 'usb',
           'net', 'scsi_host', 'scsi_target', 'scsi', 'storage', 'fc_host', 'vports',
           'scsi_generic', 'drm', 'mdev', 'mdev_types', 'ccw'.  If --tree is used, the output is
           formatted in a tree representing parents of each node.  cap and --tree are mutually
           exclusive.

       nodedev-reattach nodedev
           Declare that nodedev is no longer in use by any guests, and that the host can resume
           normal use of the device.  This is done automatically for PCI devices in managed mode
           and USB devices, but must be done explicitly to match any explicit nodedev-detach.

       nodedev-reset nodedev
           Trigger a device reset for nodedev, useful prior to transferring a node device between
           guest passthrough or the host.  Libvirt will often do this action implicitly when
           required, but this command allows an explicit reset when needed.

       nodedev-event {[nodedev] event [--loop] [--timeout seconds] [--timestamp] | --list}
           Wait for a class of node device events to occur, and print appropriate details of
           events as they happen.  The events can optionally be filtered by nodedev.  Using
           --list as the only argument will provide a list of possible event values known by this
           client, although the connection might not allow registering for all these events.

           By default, this command is one-shot, and returns success once an event occurs; you
           can send SIGINT (usually via "Ctrl-C") to quit immediately.  If --timeout is
           specified, the command gives up waiting for events after seconds have elapsed.   With
           --loop, the command prints all events until a timeout or interrupt key.

           When --timestamp is used, a human-readable timestamp will be printed before the event.

VIRTUAL NETWORK COMMANDS

       The following commands manipulate networks. Libvirt has the capability to define virtual
       networks which can then be used by domains and linked to actual network devices. For more
       detailed information about this feature see the documentation at
       <https://libvirt.org/formatnetwork.html> . Many of the commands for virtual networks are
       similar to the ones used for domains, but the way to name a virtual network is either by
       its name or UUID.

       net-autostart network [--disable]
           Configure a virtual network to be automatically started at boot.  The --disable option
           disable autostarting.

       net-create file
           Create a transient (temporary) virtual network from an XML file and instantiate
           (start) the network.  See the documentation at
           <https://libvirt.org/formatnetwork.html> to get a description of the XML network
           format used by libvirt.

       net-define file
           Define an inactive persistent virtual network or modify an existing persistent one
           from the XML file.

       net-destroy network
           Destroy (stop) a given transient or persistent virtual network specified by its name
           or UUID. This takes effect immediately.

       net-dumpxml network [--inactive]
           Output the virtual network information as an XML dump to stdout.  If --inactive is
           specified, then physical functions are not expanded into their associated virtual
           functions.

       net-edit network
           Edit the XML configuration file for a network.

           This is equivalent to:

            virsh net-dumpxml --inactive network > network.xml
            vi network.xml (or make changes with your other text editor)
            virsh net-define network.xml

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

       net-event {[network] event [--loop] [--timeout seconds] [--timestamp] | --list}
           Wait for a class of network events to occur, and print appropriate details of events
           as they happen.  The events can optionally be filtered by network.  Using --list as
           the only argument will provide a list of possible event values known by this client,
           although the connection might not allow registering for all these events.

           By default, this command is one-shot, and returns success once an event occurs; you
           can send SIGINT (usually via "Ctrl-C") to quit immediately.  If --timeout is
           specified, the command gives up waiting for events after seconds have elapsed.   With
           --loop, the command prints all events until a timeout or interrupt key.

           When --timestamp is used, a human-readable timestamp will be printed before the event.

       net-info network
           Returns basic information about the network object.

       net-list [--inactive | --all] { [--table] | --name | --uuid } [--persistent]
       [<--transient>] [--autostart] [<--no-autostart>]
           Returns the list of active networks, if --all is specified this will also include
           defined but inactive networks, if --inactive is specified only the inactive ones will
           be listed. You may also want to filter the returned networks by --persistent to list
           the persistent ones, --transient to list the transient ones, --autostart to list the
           ones with autostart enabled, and --no-autostart to list the ones with autostart
           disabled.

           If --name is specified, network names are printed instead of the table formatted one
           per line. If --uuid is specified network's UUID's are printed instead of names. Flag
           --table specifies that the legacy table-formatted output should be used. This is the
           default. All of these are mutually exclusive.

           NOTE: When talking to older servers, this command is forced to use a series of API
           calls with an inherent race, where a pool might not be listed or might appear more
           than once if it changed state between calls while the list was being collected.  Newer
           servers do not have this problem.

       net-name network-UUID
           Convert a network UUID to network name.

       net-start network
           Start a (previously defined) inactive network.

       net-undefine network
           Undefine the configuration for a persistent network. If the network is active, make it
           transient.

       net-uuid network-name
           Convert a network name to network UUID.

       net-update network command section xml [--parent-index index] [[--live] [--config] |
       [--current]]
           Update the given section of an existing network definition, with the changes
           optionally taking effect immediately, without needing to destroy and re-start the
           network.

           command is one of "add-first", "add-last", "add" (a synonym for add-last), "delete",
           or "modify".

           section is one of "bridge", "domain", "ip", "ip-dhcp-host", "ip-dhcp-range",
           "forward", "forward-interface", "forward-pf", "portgroup", "dns-host", "dns-txt", or
           "dns-srv", each section being named by a concatenation of the xml element hierarchy
           leading to the element being changed. For example, "ip-dhcp-host" will change a <host>
           element that is contained inside a <dhcp> element inside an <ip> element of the
           network.

           xml is either the text of a complete xml element of the type being changed (e.g.
           "<host mac="00:11:22:33:44:55' ip='1.2.3.4'/>", or the name of a file that contains a
           complete xml element. Disambiguation is done by looking at the first character of the
           provided text - if the first character is "<", it is xml text, if the first character
           is not "<", it is the name of a file that contains the xml text to be used.

           The --parent-index option is used to specify which of several parent elements the
           requested element is in (0-based). For example, a dhcp <host> element could be in any
           one of multiple <ip> elements in the network; if a parent-index isn't provided, the
           "most appropriate" <ip> element will be selected (usually the only one that already
           has a <dhcp> element), but if --parent-index is given, that particular instance of
           <ip> will get the modification.

           If --live is specified, affect a running network.  If --config is specified, affect
           the next startup of a persistent network.  If --current is specified, affect the
           current network state.  Both --live and --config flags may be given, but --current is
           exclusive. Not specifying any flag is the same as specifying --current.

       net-dhcp-leases network [mac]
           Get a list of dhcp leases for all network interfaces connected to the given virtual
           network or limited output just for one interface if mac is specified.

INTERFACE COMMANDS

       The following commands manipulate host interfaces.  Often, these host interfaces can then
       be used by name within domain <interface> elements (such as a system-created bridge
       interface), but there is no requirement that host interfaces be tied to any particular
       guest configuration XML at all.

       Many of the commands for host interfaces are similar to the ones used for domains, and the
       way to name an interface is either by its name or its MAC address.  However, using a MAC
       address for an iface argument only works when that address is unique (if an interface and
       a bridge share the same MAC address, which is often the case, then using that MAC address
       results in an error due to ambiguity, and you must resort to a name instead).

       iface-bridge interface bridge [--no-stp] [delay] [--no-start]
           Create a bridge device named bridge, and attach the existing network device interface
           to the new bridge.  The new bridge defaults to starting immediately, with STP enabled
           and a delay of 0; these settings can be altered with --no-stp, --no-start, and an
           integer number of seconds for delay. All IP address configuration of interface will be
           moved to the new bridge device.

           See also iface-unbridge for undoing this operation.

       iface-define file
           Define an inactive persistent physical host interface or modify an existing persistent
           one from the XML file.

       iface-destroy interface
           Destroy (stop) a given host interface, such as by running "if-down" to disable that
           interface from active use. This takes effect immediately.

       iface-dumpxml interface [--inactive]
           Output the host interface information as an XML dump to stdout.  If --inactive is
           specified, then the output reflects the persistent state of the interface that will be
           used the next time it is started.

       iface-edit interface
           Edit the XML configuration file for a host interface.

           This is equivalent to:

            virsh iface-dumpxml iface > iface.xml
            vi iface.xml (or make changes with your other text editor)
            virsh iface-define iface.xml

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

       iface-list [--inactive | --all]
           Returns the list of active host interfaces.  If --all is specified this will also
           include defined but inactive interfaces.  If --inactive is specified only the inactive
           ones will be listed.

       iface-name interface
           Convert a host interface MAC to interface name, if the MAC address is unique among the
           host's interfaces.

           interface specifies the interface MAC address.

       iface-mac interface
           Convert a host interface name to MAC address.

           interface specifies the interface name.

       iface-start interface
           Start a (previously defined) host interface, such as by running "if-up".

       iface-unbridge bridge [--no-start]
           Tear down a bridge device named bridge, releasing its underlying interface back to
           normal usage, and moving all IP address configuration from the bridge device to the
           underlying device.  The underlying interface is restarted unless --no-start is
           present; this flag is present for symmetry, but generally not recommended.

           See also iface-bridge for creating a bridge.

       iface-undefine interface
           Undefine the configuration for an inactive host interface.

       iface-begin
           Create a snapshot of current host interface settings, which can later be committed
           (iface-commit) or restored (iface-rollback).  If a snapshot already exists, then this
           command will fail until the previous snapshot has been committed or restored.
           Undefined behavior results if any external changes are made to host interfaces outside
           of the libvirt API between the beginning of a snapshot and its eventual commit or
           rollback.

       iface-commit
           Declare all changes since the last iface-begin as working, and delete the rollback
           point.  If no interface snapshot has already been started, then this command will
           fail.

       iface-rollback
           Revert all host interface settings back to the state recorded in the last iface-begin.
           If no interface snapshot has already been started, then this command will fail.
           Rebooting the host also serves as an implicit rollback point.

STORAGE POOL COMMANDS

       The following commands manipulate storage pools. Libvirt has the capability to manage
       various storage solutions, including files, raw partitions, and domain-specific formats,
       used to provide the storage volumes visible as devices within virtual machines. For more
       detailed information about this feature, see the documentation at
       <https://libvirt.org/formatstorage.html> . Many of the commands for pools are similar to
       the ones used for domains.

       find-storage-pool-sources type [srcSpec]
           Returns XML describing all possible available storage pool sources that could be used
           to create or define a storage pool of a given type. If srcSpec is provided, it is a
           file that contains XML to further restrict the query for pools.

           Not all storage pools support discovery in this manner. Furthermore, for those that do
           support discovery, only specific XML elements are required in order to return valid
           data, while other elements and even attributes of some elements are ignored since they
           are not necessary to find the pool based on the search criteria. The following lists
           the supported type options and the expected minimal XML elements used to perform the
           search.

           For a "netfs" or "gluster" pool, the minimal expected XML required is the <host>
           element with a "name" attribute describing the IP address or hostname to be used to
           find the pool. The "port" attribute will be ignored as will any other provided XML
           elements in srcSpec.

           For a "logical" pool, the contents of the srcSpec file are ignored, although if
           provided the file must at least exist.

           For an "iscsi" pool, the minimal expect XML required is the <host> element with a
           "name" attribute describing the IP address or hostname to be used to find the pool
           (the iSCSI server address). Optionally, the "port" attribute may be provided, although
           it will default to 3260. Optionally, an <initiator> XML element with a "name"
           attribute may be provided to further restrict the iSCSI target search to a specific
           initiator for multi-iqn iSCSI storage pools.

       find-storage-pool-sources-as type [host] [port] [initiator]
           Rather than providing srcSpec XML file for find-storage-pool-sources use this command
           option in order to have virsh generate the query XML file using the optional
           arguments. The command will return the same output XML as find-storage-pool-sources.

           Use host to describe a specific host to use for networked storage, such as netfs,
           gluster, and iscsi type pools.

           Use port to further restrict which networked port to utilize for the connection if
           required by the specific storage backend, such as iscsi.

           Use initiator to further restrict the iscsi type pool searches to specific target
           initiators.

       pool-autostart pool-or-uuid [--disable]
           Configure whether pool should automatically start at boot.

       pool-build pool-or-uuid [--overwrite] [--no-overwrite]
           Build a given pool.

           Options --overwrite and --no-overwrite can only be used for pool-build a filesystem,
           disk, or logical pool.

           For a file system pool if neither flag is specified, then pool-build just makes the
           target path directory and no attempt to run mkfs on the target volume device. If
           --no-overwrite is specified, it probes to determine if a filesystem already exists on
           the target device, returning an error if one exists or using mkfs to format the target
           device if not.  If --overwrite is specified, mkfs is always executed and any existing
           data on the target device is overwritten unconditionally.

           For a disk pool, if neither of them is specified or --no-overwrite is specified, pool-
           build will check the target volume device for existing filesystems or partitions
           before attempting to write a new label on the target volume device. If the target
           volume device already has a label, the command will fail. If --overwrite is specified,
           then no check will be made on the target volume device prior to writing a new label.
           Writing of the label uses the pool source format type or "dos" if not specified.

           For a logical pool, if neither of them is specified or --no-overwrite is specified,
           pool-build will check the target volume devices for existing filesystems or partitions
           before attempting to initialize and format each device for usage by the logical pool.
           If any target volume device already has a label, the command will fail. If --overwrite
           is specified, then no check will be made on the target volume devices prior to
           initializing and formatting each device. Once all the target volume devices are
           properly formatted via pvcreate, the volume group will be created using all the
           devices.

       pool-create file [--build] [[--overwrite] | [--no-overwrite]]
           Create and start a pool object from the XML file.

           [--build] [[--overwrite] | [--no-overwrite]] perform a pool-build after creation in
           order to remove the need for a follow-up command to build the pool. The --overwrite
           and --no-overwrite flags follow the same rules as pool-build. If just --build is
           provided, then pool-build is called with no flags.

       pool-create-as name type [--source-host hostname] [--source-path path] [--source-dev path]
       [--source-name name] [--target path] [--source-format format] [--auth-type authtype
       --auth-username username [--secret-usage usage | --secret-uuid uuid]] [[--adapter-name
       name] | [--adapter-wwnn --adapter-wwpn] [--adapter-parent parent]] [--build]
       [[--overwrite] | [--no-overwrite]] [--print-xml]
           Create and start a pool object name from the raw parameters.  If --print-xml is
           specified, then print the XML of the pool object without creating the pool.
           Otherwise, the pool has the specified type. When using pool-create-as for a pool of
           type "disk", the existing partitions found on the --source-dev path will be used to
           populate the disk pool. Therefore, it is suggested to use pool-define-as and pool-
           build with the --overwrite in order to properly initialize the disk pool.

           [--source-host hostname] provides the source hostname for pools backed by storage from
           a remote server (pool types netfs, iscsi, rbd, sheepdog, gluster).

           [--source-path path] provides the source directory path for pools backed by
           directories (pool type dir).

           [--source-dev path] provides the source path for pools backed by physical devices
           (pool types fs, logical, disk, iscsi, zfs).

           [--source-name name] provides the source name for pools backed by storage from a named
           element (pool types logical, rbd, sheepdog, gluster).

           [--target path] is the path for the mapping of the storage pool into the host file
           system.

           [--source-format format] provides information about the format of the pool (pool types
           fs, netfs, disk, logical).

           [--auth-type authtype --auth-username username [--secret-usage usage | --secret-uuid
           uuid]] provides the elements required to generate authentication credentials for the
           storage pool. The authtype is either chap for iscsi type pools or ceph for rbd type
           pools. Either the secret usage or uuid value may be provided, but not both.

           [--adapter-name name] defines the scsi_hostN adapter name to be used for the scsi_host
           adapter type pool.

           [--adapter-wwnn --adapter-wwpn [--adapter-parent parent]] defines the wwnn and wwpn to
           be used for the fc_host adapter type pool. The parent optionally provides the name of
           the scsi_hostN node device to be used for the vHBA.

           [--build] [[--overwrite] | [--no-overwrite]] perform a pool-build after creation in
           order to remove the need for a follow-up command to build the pool. The --overwrite
           and --no-overwrite flags follow the same rules as pool-build. If just --build is
           provided, then pool-build is called with no flags.

           For a "logical" pool only [--name] needs to be provided. The [--source-name] if
           provided must match the Volume Group name.  If not provided, one will be generated
           using the [--name]. If provided the [--target] is ignored and a target source is
           generated using the [--source-name] (or as generated from the [--name]).

       pool-define file
           Define an inactive persistent storage pool or modify an existing persistent one from
           the XML file.

       pool-define-as name type [--source-host hostname] [--source-path path] [--source-dev path]
       [--source-name name] [--target path] [--source-format format] [--auth-type authtype
       --auth-username username [--secret-usage usage | --secret-uuid uuid]] [[--adapter-name
       name] | [--adapter-wwnn --adapter-wwpn] [--adapter-parent parent]] [--print-xml]
           Create, but do not start, a pool object name from the raw parameters.  If --print-xml
           is specified, then print the XML of the pool object without defining the pool.
           Otherwise, the pool has the specified type.

           Use the same arguments as pool-create-as, except for the --build, --overwrite, and
           --no-overwrite options.

       pool-destroy pool-or-uuid
           Destroy (stop) a given pool object. Libvirt will no longer manage the storage
           described by the pool object, but the raw data contained in the pool is not changed,
           and can be later recovered with pool-create.

       pool-delete pool-or-uuid
           Destroy the resources used by a given pool object. This operation is non-recoverable.
           The pool object will still exist after this command, ready for the creation of new
           storage volumes.

       pool-dumpxml [--inactive] pool-or-uuid
           Returns the XML information about the pool object.  --inactive tells virsh to dump
           pool configuration that will be used on next start of the pool as opposed to the
           current pool configuration.

       pool-edit pool-or-uuid
           Edit the XML configuration file for a storage pool.

           This is equivalent to:

            virsh pool-dumpxml pool > pool.xml
            vi pool.xml (or make changes with your other text editor)
            virsh pool-define pool.xml

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

       pool-info [--bytes] pool-or-uuid
           Returns basic information about the pool object. If --bytes is specified the sizes of
           basic info are not converted to human friendly units.

       pool-list [--inactive] [--all] [--persistent] [--transient] [--autostart] [--no-autostart]
       [[--details] [--uuid] [--name] [<type>]
           List pool objects known to libvirt.  By default, only active pools are listed;
           --inactive lists just the inactive pools, and --all lists all pools.

           In addition, there are several sets of filtering flags. --persistent is to list the
           persistent pools, --transient is to list the transient pools.  --autostart lists the
           autostarting pools, --no-autostart lists the pools with autostarting disabled. If
           --uuid is specified only pool's UUIDs are printed.  If --name is specified only pool's
           names are printed. If both --name and --uuid are specified, pool's UUID and names are
           printed side by side without any header. Option --details is mutually exclusive with
           options --uuid and --name.

           You may also want to list pools with specified types using type, the pool types must
           be separated by comma, e.g. --type dir,disk. The valid pool types include 'dir', 'fs',
           'netfs', 'logical', 'disk', 'iscsi', 'scsi', 'mpath', 'rbd', 'sheepdog' and 'gluster'.

           The --details option instructs virsh to additionally display pool persistence and
           capacity related information where available.

           NOTE: When talking to older servers, this command is forced to use a series of API
           calls with an inherent race, where a pool might not be listed or might appear more
           than once if it changed state between calls while the list was being collected.  Newer
           servers do not have this problem.

       pool-name uuid
           Convert the uuid to a pool name.

       pool-refresh pool-or-uuid
           Refresh the list of volumes contained in pool.

       pool-start pool-or-uuid [--build] [[--overwrite] | [--no-overwrite]]
           Start the storage pool, which is previously defined but inactive.

           [--build] [[--overwrite] | [--no-overwrite]] perform a pool-build prior to pool-start
           to ensure the pool environment is in an expected state rather than needing to run the
           build command prior to startup. The --overwrite and --no-overwrite flags follow the
           same rules as pool-build. If just --build is provided, then pool-build is called with
           no flags.

           Note: A storage pool that relies on remote resources such as an "iscsi" or a (v)HBA
           backed "scsi" pool may need to be refreshed multiple times in order to have all the
           volumes detected (see pool-refresh).  This is because the corresponding volume devices
           may not be present in the host's filesystem during the initial pool startup or the
           current refresh attempt. The number of refresh retries is dependent upon the network
           connection and the time the host takes to export the corresponding devices.

       pool-undefine pool-or-uuid
           Undefine the configuration for an inactive pool.

       pool-uuid pool
           Returns the UUID of the named pool.

       pool-event {[pool] event [--loop] [--timeout seconds] [--timestamp] | --list}
           Wait for a class of storage pool events to occur, and print appropriate details of
           events as they happen.  The events can optionally be filtered by pool.  Using --list
           as the only argument will provide a list of possible event values known by this
           client, although the connection might not allow registering for all these events.

           By default, this command is one-shot, and returns success once an event occurs; you
           can send SIGINT (usually via "Ctrl-C") to quit immediately.  If --timeout is
           specified, the command gives up waiting for events after seconds have elapsed.   With
           --loop, the command prints all events until a timeout or interrupt key.

           When --timestamp is used, a human-readable timestamp will be printed before the event.

VOLUME COMMANDS

       vol-create pool-or-uuid FILE [--prealloc-metadata]
           Create a volume from an XML <file>.  pool-or-uuid is the name or UUID of the storage
           pool to create the volume in.  FILE is the XML <file> with the volume definition. An
           easy way to create the XML <file> is to use the vol-dumpxml command to obtain the
           definition of a pre-existing volume.  [--prealloc-metadata] preallocate metadata (for
           qcow2 images which don't support full allocation). This option creates a sparse image
           file with metadata, resulting in higher performance compared to images with no
           preallocation and only slightly higher initial disk space usage.

           Example

            virsh vol-dumpxml --pool storagepool1 appvolume1 > newvolume.xml
            vi newvolume.xml (or make changes with your other text editor)
            virsh vol-create differentstoragepool newvolume.xml

       vol-create-from pool-or-uuid FILE [--inputpool pool-or-uuid] vol-name-or-key-or-path
       [--prealloc-metadata] [--reflink]
           Create a volume, using another volume as input.  pool-or-uuid is the name or UUID of
           the storage pool to create the volume in.  FILE is the XML <file> with the volume
           definition.  --inputpool pool-or-uuid is the name or uuid of the storage pool the
           source volume is in.  vol-name-or-key-or-path is the name or key or path of the source
           volume.  [--prealloc-metadata] preallocate metadata (for qcow2 images which don't
           support full allocation). This option creates a sparse image file with metadata,
           resulting in higher performance compared to images with no preallocation and only
           slightly higher initial disk space usage.  When --reflink is specified, perform a COW
           lightweight copy, where the data blocks are copied only when modified.  If this is not
           possible, the copy fails.

       vol-create-as pool-or-uuid name capacity [--allocation size] [--format string]
       [--backing-vol vol-name-or-key-or-path] [--backing-vol-format string]
       [--prealloc-metadata] [--print-xml]
           Create a volume from a set of arguments unless --print-xml is specified, in which case
           just the XML of the volume object is printed out without any actual object creation.
           pool-or-uuid is the name or UUID of the storage pool to create the volume in.  name is
           the name of the new volume. For a disk pool, this must match the partition name as
           determined from the pool's source device path and the next available partition. For
           example, a source device path of /dev/sdb and there are no partitions on the disk,
           then the name must be sdb1 with the next name being sdb2 and so on.  capacity is the
           size of the volume to be created, as a scaled integer (see NOTES above), defaulting to
           bytes if there is no suffix.  --allocation size is the initial size to be allocated in
           the volume, also as a scaled integer defaulting to bytes.  --format string is used in
           file based storage pools to specify the volume file format to use; raw, bochs, qcow,
           qcow2, vmdk, qed. Use extended for disk storage pools in order to create an extended
           partition (other values are validity checked but not preserved when libvirtd is
           restarted or the pool is refreshed).  --backing-vol vol-name-or-key-or-path is the
           source backing volume to be used if taking a snapshot of an existing volume.
           --backing-vol-format string is the format of the snapshot backing volume; raw, bochs,
           qcow, qcow2, qed, vmdk, host_device. These are, however, meant for file based storage
           pools.  [--prealloc-metadata] preallocate metadata (for qcow2 images which don't
           support full allocation). This option creates a sparse image file with metadata,
           resulting in higher performance compared to images with no preallocation and only
           slightly higher initial disk space usage.

       vol-clone [--pool pool-or-uuid] vol-name-or-key-or-path name [--prealloc-metadata]
       [--reflink]
           Clone an existing volume within the parent pool.  Less powerful, but easier to type,
           version of vol-create-from.  --pool pool-or-uuid is the name or UUID of the storage
           pool that contains the source volume, and will contain the new volume.  vol-name-or-
           key-or-path is the name or key or path of the source volume.  name is the name of the
           new volume.  [--prealloc-metadata] preallocate metadata (for qcow2 images which don't
           support full allocation). This option creates a sparse image file with metadata,
           resulting in higher performance compared to images with no preallocation and only
           slightly higher initial disk space usage.  When --reflink is specified, perform a COW
           lightweight copy, where the data blocks are copied only when modified.  If this is not
           possible, the copy fails.

       vol-delete [--pool pool-or-uuid] vol-name-or-key-or-path [--delete-snapshots]
           Delete a given volume.  --pool pool-or-uuid is the name or UUID of the storage pool
           the volume is in.  vol-name-or-key-or-path is the name or key or path of the volume to
           delete.

           The --delete-snapshots flag specifies that any snapshots associated with the storage
           volume should be deleted as well. Not all storage drivers support this option,
           presently only rbd.

       vol-upload [--pool pool-or-uuid] [--offset bytes] [--length bytes] [--sparse] vol-name-or-
       key-or-path local-file
           Upload the contents of local-file to a storage volume.  --pool pool-or-uuid is the
           name or UUID of the storage pool the volume is in.  vol-name-or-key-or-path is the
           name or key or path of the volume where the file will be uploaded.  If --sparse is
           specified, this command will preserve volume sparseness.  --offset is the position in
           the storage volume at which to start writing the data. The value must be 0 or larger.
           --length is an upper bound of the amount of data to be uploaded. A negative value is
           interpreted as an unsigned long long value to essentially include everything from the
           offset to the end of the volume.  An error will occur if the local-file is greater
           than the specified length.  See the description for the libvirt virStorageVolUpload
           API for details regarding possible target volume and pool changes as a result of the
           pool refresh when the upload is attempted.

       vol-download [--pool pool-or-uuid] [--offset bytes] [--length bytes] [--sparse] vol-name-
       or-key-or-path local-file
           Download the contents of a storage volume to local-file.  --pool pool-or-uuid is the
           name or UUID of the storage pool the volume is in.  vol-name-or-key-or-path is the
           name or key or path of the volume to download.  If --sparse is specified, this command
           will preserve volume sparseness.  --offset is the position in the storage volume at
           which to start reading the data. The value must be 0 or larger. --length is an upper
           bound of the amount of data to be downloaded. A negative value is interpreted as an
           unsigned long long value to essentially include everything from the offset to the end
           of the volume.

       vol-wipe [--pool pool-or-uuid] [--algorithm algorithm] vol-name-or-key-or-path
           Wipe a volume, ensure data previously on the volume is not accessible to future reads.
           --pool pool-or-uuid is the name or UUID of the storage pool the volume is in.  vol-
           name-or-key-or-path is the name or key or path of the volume to wipe.  It is possible
           to choose different wiping algorithms instead of re-writing volume with zeroes. This
           can be done via --algorithm switch.

           Supported algorithms
             zero       - 1-pass all zeroes
             nnsa       - 4-pass NNSA Policy Letter NAP-14.1-C (XVI-8) for
                          sanitizing removable and non-removable hard disks:
                          random x2, 0x00, verify.
             dod        - 4-pass DoD 5220.22-M section 8-306 procedure for
                          sanitizing removable and non-removable rigid
                          disks: random, 0x00, 0xff, verify.
             bsi        - 9-pass method recommended by the German Center of
                          Security in Information Technologies
                          (http://www.bsi.bund.de): 0xff, 0xfe, 0xfd, 0xfb,
                          0xf7, 0xef, 0xdf, 0xbf, 0x7f.
             gutmann    - The canonical 35-pass sequence described in
                          Gutmann's paper.
             schneier   - 7-pass method described by Bruce Schneier in
                          "Applied Cryptography" (1996): 0x00, 0xff,
                          random x5.
             pfitzner7  - Roy Pfitzner's 7-random-pass method: random x7.
             pfitzner33 - Roy Pfitzner's 33-random-pass method: random x33.
             random     - 1-pass pattern: random.
             trim       - 1-pass trimming the volume using TRIM or DISCARD

           Note: The "scrub" binary will be used to handle the 'nnsa', 'dod', 'bsi', 'gutmann',
           'schneier', 'pfitzner7' and 'pfitzner33' algorithms.  The availability of the
           algorithms may be limited by the version of the "scrub" binary installed on the host.
           The 'zero' algorithm will write zeroes to the entire volume. For some volumes, such as
           sparse or rbd volumes, this may result in completely filling the volume with zeroes
           making it appear to be completely full. As an alternative, the 'trim' algorithm does
           not overwrite all the data in a volume, rather it expects the storage driver to be
           able to discard all bytes in a volume. It is up to the storage driver to handle how
           the discarding occurs. Not all storage drivers or volume types can support 'trim'.

       vol-dumpxml [--pool pool-or-uuid] vol-name-or-key-or-path
           Output the volume information as an XML dump to stdout.  --pool pool-or-uuid is the
           name or UUID of the storage pool the volume is in. vol-name-or-key-or-path is the name
           or key or path of the volume to output the XML of.

       vol-info [--pool pool-or-uuid] vol-name-or-key-or-path [--bytes] [--physical]
           Returns basic information about the given storage volume.  --pool pool-or-uuid is the
           name or UUID of the storage pool the volume is in. vol-name-or-key-or-path is the name
           or key or path of the volume to return information for. If --bytes is specified the
           sizes are not converted to human friendly units. If --physical is specified, then the
           host physical size is returned and displayed instead of the allocation value. The
           physical value for some file types, such as qcow2 may have a different (larger)
           physical value than is shown for allocation. Additionally sparse files will have
           different physical and allocation values.

       vol-list [--pool pool-or-uuid] [--details]
           Return the list of volumes in the given storage pool.  --pool pool-or-uuid is the name
           or UUID of the storage pool.  The --details option instructs virsh to additionally
           display volume type and capacity related information where available.

       vol-pool [--uuid] vol-key-or-path
           Return the pool name or UUID for a given volume. By default, the pool name is
           returned. If the --uuid option is given, the pool UUID is returned instead.  vol-key-
           or-path is the key or path of the volume to return the pool information for.

       vol-path [--pool pool-or-uuid] vol-name-or-key
           Return the path for a given volume.  --pool pool-or-uuid is the name or UUID of the
           storage pool the volume is in.  vol-name-or-key is the name or key of the volume to
           return the path for.

       vol-name vol-key-or-path
           Return the name for a given volume.  vol-key-or-path is the key or path of the volume
           to return the name for.

       vol-key [--pool pool-or-uuid] vol-name-or-path
           Return the volume key for a given volume.  --pool pool-or-uuid is the name or UUID of
           the storage pool the volume is in. vol-name-or-path is the name or path of the volume
           to return the volume key for.

       vol-resize vol-name-or-path capacity [--pool pool-or-uuid] [--allocate] [--delta]
       [--shrink]
           Resize the capacity of the given volume, in bytes.  --pool pool-or-uuid is the name or
           UUID of the storage pool the volume is in. vol-name-or-key-or-path is the name or key
           or path of the volume to resize.  The new capacity might be sparse unless --allocate
           is specified.  Normally, capacity is the new size, but if --delta is present, then it
           is added to the existing size.  Attempts to shrink the volume will fail unless
           --shrink is present; capacity cannot be negative unless --shrink is provided, but a
           negative sign is not necessary. capacity is a scaled integer (see NOTES above), which
           defaults to bytes if there is no suffix.  This command is only safe for storage
           volumes not in use by an active guest; see also blockresize for live resizing.

SECRET COMMANDS

       The following commands manipulate "secrets" (e.g. passwords, passphrases and encryption
       keys).  Libvirt can store secrets independently from their use, and other objects (e.g.
       volumes or domains) can refer to the secrets for encryption or possibly other uses.
       Secrets are identified using a UUID.  See <https://libvirt.org/formatsecret.html> for
       documentation of the XML format used to represent properties of secrets.

       secret-define file
           Create a secret with the properties specified in file, with no associated secret
           value.  If file does not specify a UUID, choose one automatically.  If file specifies
           a UUID of an existing secret, replace its properties by properties defined in file,
           without affecting the secret value.

       secret-dumpxml secret
           Output properties of secret (specified by its UUID) as an XML dump to stdout.

       secret-event {[secret] event [--loop] [--timeout seconds] [--timestamp] | --list}
           Wait for a class of secret events to occur, and print appropriate details of events as
           they happen.  The events can optionally be filtered by secret.  Using --list as the
           only argument will provide a list of possible event values known by this client,
           although the connection might not allow registering for all these events.

           By default, this command is one-shot, and returns success once an event occurs; you
           can send SIGINT (usually via "Ctrl-C") to quit immediately.  If --timeout is
           specified, the command gives up waiting for events after seconds have elapsed.   With
           --loop, the command prints all events until a timeout or interrupt key.

           When --timestamp is used, a human-readable timestamp will be printed before the event.

       secret-set-value secret base64
           Set the value associated with secret (specified by its UUID) to the value
           Base64-encoded value base64.

       secret-get-value secret
           Output the value associated with secret (specified by its UUID) to stdout, encoded
           using Base64.

       secret-undefine secret
           Delete a secret (specified by its UUID), including the associated value, if any.

       secret-list [--ephemeral] [--no-ephemeral] [--private] [--no-private]
           Returns the list of secrets. You may also want to filter the returned secrets by
           --ephemeral to list the ephemeral ones, --no-ephemeral to list the non-ephemeral ones,
           --private to list the private ones, and --no-private to list the non-private ones.

SNAPSHOT COMMANDS

       The following commands manipulate domain snapshots.  Snapshots take the disk, memory, and
       device state of a domain at a point-of-time, and save it for future use.  They have many
       uses, from saving a "clean" copy of an OS image to saving a domain's state before a
       potentially destructive operation.  Snapshots are identified with a unique name.  See
       <https://libvirt.org/formatsnapshot.html> for documentation of the XML format used to
       represent properties of snapshots.

       snapshot-create domain [xmlfile] {[--redefine [--current]] | [--no-metadata] [--halt]
       [--disk-only] [--reuse-external] [--quiesce] [--atomic] [--live]}
           Create a snapshot for domain domain with the properties specified in xmlfile.
           Normally, the only properties settable for a domain snapshot are the <name> and
           <description> elements, as well as <disks> if --disk-only is given; the rest of the
           fields are ignored, and automatically filled in by libvirt.  If xmlfile is completely
           omitted, then libvirt will choose a value for all fields.  The new snapshot will
           become current, as listed by snapshot-current.

           If --halt is specified, the domain will be left in an inactive state after the
           snapshot is created.

           If --disk-only is specified, the snapshot will only include disk state rather than the
           usual system checkpoint with vm state.  Disk snapshots are faster than full system
           checkpoints, but reverting to a disk snapshot may require fsck or journal replays,
           since it is like the disk state at the point when the power cord is abruptly pulled;
           and mixing --halt and --disk-only loses any data that was not flushed to disk at the
           time.

           If --redefine is specified, then all XML elements produced by snapshot-dumpxml are
           valid; this can be used to migrate snapshot hierarchy from one machine to another, to
           recreate hierarchy for the case of a transient domain that goes away and is later
           recreated with the same name and UUID, or to make slight alterations in the snapshot
           metadata (such as host-specific aspects of the domain XML embedded in the snapshot).
           When this flag is supplied, the xmlfile argument is mandatory, and the domain's
           current snapshot will not be altered unless the --current flag is also given.

           If --no-metadata is specified, then the snapshot data is created, but any metadata is
           immediately discarded (that is, libvirt does not treat the snapshot as current, and
           cannot revert to the snapshot unless --redefine is later used to teach libvirt about
           the metadata again).

           If --reuse-external is specified, and the snapshot XML requests an external snapshot
           with a destination of an existing file, then the destination must exist and be pre-
           created with correct format and metadata. The file is then reused; otherwise, a
           snapshot is refused to avoid losing contents of the existing files.

           If --quiesce is specified, libvirt will try to use guest agent to freeze and unfreeze
           domain's mounted file systems. However, if domain has no guest agent, snapshot
           creation will fail.  Currently, this requires --disk-only to be passed as well.

           If --atomic is specified, libvirt will guarantee that the snapshot either succeeds, or
           fails with no changes; not all hypervisors support this.  If this flag is not
           specified, then some hypervisors may fail after partially performing the action, and
           dumpxml must be used to see whether any partial changes occurred.

           If --live is specified, libvirt takes the snapshot (checkpoint) while the guest is
           running. Both disk snapshot and domain memory snapshot are taken. This increases the
           size of the memory image of the external checkpoint. This is currently supported only
           for external checkpoints.

           Existence of snapshot metadata will prevent attempts to undefine a persistent domain.
           However, for transient domains, snapshot metadata is silently lost when the domain
           quits running (whether by command such as destroy or by internal guest action).

       snapshot-create-as domain {[--print-xml] | [--no-metadata] [--halt] [--reuse-external]}
       [name] [description] [--disk-only [--quiesce]] [--atomic] [[--live] [--memspec memspec]]
       [--diskspec] diskspec]...
           Create a snapshot for domain domain with the given <name> and <description>; if either
           value is omitted, libvirt will choose a value.  If --print-xml is specified, then XML
           appropriate for snapshot-create is output, rather than actually creating a snapshot.
           Otherwise, if --halt is specified, the domain will be left in an inactive state after
           the snapshot is created, and if --disk-only is specified, the snapshot will not
           include vm state.

           The --memspec option can be used to control whether a checkpoint is internal or
           external.  The --memspec flag is mandatory, followed by a memspec of the form
           [file=]name[,snapshot=type], where type can be no, internal, or external.  To include
           a literal comma in file=name, escape it with a second comma. --memspec cannot be used
           together with --disk-only.

           The --diskspec option can be used to control how --disk-only and external checkpoints
           create external files.  This option can occur multiple times, according to the number
           of <disk> elements in the domain xml.  Each <diskspec> is in the form
           disk[,snapshot=type][,driver=type][,file=name].  A diskspec must be provided for disks
           backed by block devices as libvirt doesn't auto-generate file names for those.  To
           include a literal comma in disk or in file=name, escape it with a second comma.  A
           literal --diskspec must precede each diskspec unless all three of domain, name, and
           description are also present.  For example, a diskspec of
           "vda,snapshot=external,file=/path/to,,new" results in the following XML:
             <disk name='vda' snapshot='external'>
               <source file='/path/to,new'/>
             </disk>

           If --reuse-external is specified, and the domain XML or diskspec option requests an
           external snapshot with a destination of an existing file, then the destination must
           exist and be pre-created with correct format and metadata. The file is then reused;
           otherwise, a snapshot is refused to avoid losing contents of the existing files.

           If --quiesce is specified, libvirt will try to use guest agent to freeze and unfreeze
           domain's mounted file systems. However, if domain has no guest agent, snapshot
           creation will fail.  Currently, this requires --disk-only to be passed as well.

           If --no-metadata is specified, then the snapshot data is created, but any metadata is
           immediately discarded (that is, libvirt does not treat the snapshot as current, and
           cannot revert to the snapshot unless snapshot-create is later used to teach libvirt
           about the metadata again).  This flag is incompatible with --print-xml.

           If --atomic is specified, libvirt will guarantee that the snapshot either succeeds, or
           fails with no changes; not all hypervisors support this.  If this flag is not
           specified, then some hypervisors may fail after partially performing the action, and
           dumpxml must be used to see whether any partial changes occurred.

           If --live is specified, libvirt takes the snapshot while the guest is running. This
           increases the size of the memory image of the external checkpoint. This is currently
           supported only for external checkpoints.

       snapshot-current domain {[--name] | [--security-info] | [snapshotname]}
           Without snapshotname, this will output the snapshot XML for the domain's current
           snapshot (if any).  If --name is specified, just the current snapshot name instead of
           the full xml.  Otherwise, using --security-info will also include security sensitive
           information in the XML.

           With snapshotname, this is a request to make the existing named snapshot become the
           current snapshot, without reverting the domain.

       snapshot-edit domain [snapshotname] [--current] {[--rename] | [--clone]}
           Edit the XML configuration file for snapshotname of a domain.  If both snapshotname
           and --current are specified, also force the edited snapshot to become the current
           snapshot.  If snapshotname is omitted, then --current must be supplied, to edit the
           current snapshot.

           This is equivalent to:

            virsh snapshot-dumpxml dom name > snapshot.xml
            vi snapshot.xml (or make changes with your other text editor)
            virsh snapshot-create dom snapshot.xml --redefine [--current]

           except that it does some error checking.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

           If --rename is specified, then the edits can change the snapshot name.  If --clone is
           specified, then changing the snapshot name will create a clone of the snapshot
           metadata.  If neither is specified, then the edits must not change the snapshot name.
           Note that changing a snapshot name must be done with care, since the contents of some
           snapshots, such as internal snapshots within a single qcow2 file, are accessible only
           from the original name.

       snapshot-info domain {snapshot | --current}
           Output basic information about a named <snapshot>, or the current snapshot with
           --current.

       snapshot-list domain [--metadata] [--no-metadata] [{--parent | --roots | [{--tree |
       --name}]}] [{[--from] snapshot | --current} [--descendants]] [--leaves] [--no-leaves]
       [--inactive] [--active] [--disk-only] [--internal] [--external]
           List all of the available snapshots for the given domain, defaulting to show columns
           for the snapshot name, creation time, and domain state.

           If --parent is specified, add a column to the output table giving the name of the
           parent of each snapshot.  If --roots is specified, the list will be filtered to just
           snapshots that have no parents.  If --tree is specified, the output will be in a tree
           format, listing just snapshot names.  These three options are mutually exclusive. If
           --name is specified only the snapshot name is printed. This option is mutually
           exclusive with --tree.

           If --from is provided, filter the list to snapshots which are children of the given
           snapshot; or if --current is provided, start at the current snapshot.  When used in
           isolation or with --parent, the list is limited to direct children unless
           --descendants is also present.  When used with --tree, the use of --descendants is
           implied.  This option is not compatible with --roots.  Note that the starting point of
           --from or --current is not included in the list unless the --tree option is also
           present.

           If --leaves is specified, the list will be filtered to just snapshots that have no
           children.  Likewise, if --no-leaves is specified, the list will be filtered to just
           snapshots with children.  (Note that omitting both options does no filtering, while
           providing both options will either produce the same list or error out depending on
           whether the server recognizes the flags).  Filtering options are not compatible with
           --tree.

           If --metadata is specified, the list will be filtered to just snapshots that involve
           libvirt metadata, and thus would prevent undefine of a persistent domain, or be lost
           on destroy of a transient domain.  Likewise, if --no-metadata is specified, the list
           will be filtered to just snapshots that exist without the need for libvirt metadata.

           If --inactive is specified, the list will be filtered to snapshots that were taken
           when the domain was shut off.  If --active is specified, the list will be filtered to
           snapshots that were taken when the domain was running, and where the snapshot includes
           the memory state to revert to that running state.  If --disk-only is specified, the
           list will be filtered to snapshots that were taken when the domain was running, but
           where the snapshot includes only disk state.

           If --internal is specified, the list will be filtered to snapshots that use internal
           storage of existing disk images.  If --external is specified, the list will be
           filtered to snapshots that use external files for disk images or memory state.

       snapshot-dumpxml domain snapshot [--security-info]
           Output the snapshot XML for the domain's snapshot named snapshot.  Using
           --security-info will also include security sensitive information.  Use snapshot-
           current to easily access the XML of the current snapshot.

       snapshot-parent domain {snapshot | --current}
           Output the name of the parent snapshot, if any, for the given snapshot, or for the
           current snapshot with --current.

       snapshot-revert domain {snapshot | --current} [{--running | --paused}] [--force]
           Revert the given domain to the snapshot specified by snapshot, or to the current
           snapshot with --current.  Be aware that this is a destructive action; any changes in
           the domain since the last snapshot was taken will be lost.  Also note that the state
           of the domain after snapshot-revert is complete will be the state of the domain at the
           time the original snapshot was taken.

           Normally, reverting to a snapshot leaves the domain in the state it was at the time
           the snapshot was created, except that a disk snapshot with no vm state leaves the
           domain in an inactive state.  Passing either the --running or --paused flag will
           perform additional state changes (such as booting an inactive domain, or pausing a
           running domain).  Since transient domains cannot be inactive, it is required to use
           one of these flags when reverting to a disk snapshot of a transient domain.

           There are two cases where a snapshot revert involves extra risk, which requires the
           use of --force to proceed.  One is the case of a snapshot that lacks full domain
           information for reverting configuration (such as snapshots created prior to libvirt
           0.9.5); since libvirt cannot prove that the current configuration matches what was in
           use at the time of the snapshot, supplying --force assures libvirt that the snapshot
           is compatible with the current configuration (and if it is not, the domain will likely
           fail to run).  The other is the case of reverting from a running domain to an active
           state where a new hypervisor has to be created rather than reusing the existing
           hypervisor, because it implies drawbacks such as breaking any existing VNC or Spice
           connections; this condition happens with an active snapshot that uses a provably
           incompatible configuration, as well as with an inactive snapshot that is combined with
           the --start or --pause flag.

       snapshot-delete domain {snapshot | --current} [--metadata] [{--children |
       --children-only}]
           Delete the snapshot for the domain named snapshot, or the current snapshot with
           --current.  If this snapshot has child snapshots, changes from this snapshot will be
           merged into the children.  If --children is passed, then delete this snapshot and any
           children of this snapshot.  If --children-only is passed, then delete any children of
           this snapshot, but leave this snapshot intact.  These two flags are mutually
           exclusive.

           If --metadata is specified, then only delete the snapshot metadata maintained by
           libvirt, while leaving the snapshot contents intact for access by external tools;
           otherwise deleting a snapshot also removes the data contents from that point in time.

NWFILTER COMMANDS

       The following commands manipulate network filters. Network filters allow filtering of the
       network traffic coming from and going to virtual machines.  Individual network traffic
       filters are written in XML and may contain references to other network filters, describe
       traffic filtering rules, or contain both. Network filters are referenced by virtual
       machines from within their interface description. A network filter may be referenced by
       multiple virtual machines' interfaces.

       nwfilter-define xmlfile
           Make a new network filter known to libvirt. If a network filter with the same name
           already exists, it will be replaced with the new XML.  Any running virtual machine
           referencing this network filter will have its network traffic rules adapted. If for
           any reason the network traffic filtering rules cannot be instantiated by any of the
           running virtual machines, then the new XML will be rejected.

       nwfilter-undefine nwfilter-name
           Delete a network filter. The deletion will fail if any running virtual machine is
           currently using this network filter.

       nwfilter-list
           List all of the available network filters.

       nwfilter-dumpxml nwfilter-name
           Output the network filter XML.

       nwfilter-edit nwfilter-name
           Edit the XML of a network filter.

           This is equivalent to:

            virsh nwfilter-dumpxml myfilter > myfilter.xml
            vi myfilter.xml (or make changes with your other text editor)
            virsh nwfilter-define myfilter.xml

           except that it does some error checking.  The new network filter may be rejected due
           to the same reason as mentioned in nwfilter-define.

           The editor used can be supplied by the $VISUAL or $EDITOR environment variables, and
           defaults to "vi".

HYPERVISOR-SPECIFIC COMMANDS

       NOTE: Use of the following commands is strongly discouraged.  They can cause libvirt to
       become confused and do the wrong thing on subsequent operations.  Once you have used these
       commands, please do not report problems to the libvirt developers; the reports will be
       ignored.  If you find that these commands are the only way to accomplish something, then
       it is better to request that the feature be added as a first-class citizen in the regular
       libvirt library.

       qemu-attach pid
           Attach an externally launched QEMU process to the libvirt QEMU driver.  The QEMU
           process must have been created with a monitor connection using the UNIX driver.
           Ideally the process will also have had the '-name' argument specified.

                $ qemu-kvm -cdrom ~/demo.iso \
                    -monitor unix:/tmp/demo,server,nowait \
                    -name foo \
                    -uuid cece4f9f-dff0-575d-0e8e-01fe380f12ea  &
                $ QEMUPID=$!
                $ virsh qemu-attach $QEMUPID

           Not all functions of libvirt are expected to work reliably after attaching to an
           externally launched QEMU process. There may be issues with the guest ABI changing upon
           migration and device hotplug or hotunplug may not work. The attached environment
           should be considered primarily read-only.

       qemu-monitor-command domain { [--hmp] | [--pretty] } command...
           Send an arbitrary monitor command command to domain domain through the qemu monitor.
           The results of the command will be printed on stdout.  If --hmp is passed, the command
           is considered to be a human monitor command and libvirt will automatically convert it
           into QMP if needed.  In that case the result will also be converted back from QMP.  If
           --pretty is given, and the monitor uses QMP, then the output will be pretty-printed.
           If more than one argument is provided for command, they are concatenated with a space
           in between before passing the single command to the monitor.

       qemu-agent-command domain [--timeout seconds | --async | --block] command...
           Send an arbitrary guest agent command command to domain domain through qemu agent.
           --timeout, --async and --block options are exclusive.  --timeout requires timeout
           seconds seconds and it must be positive.  When --aysnc is given, the command waits for
           timeout whether success or failed. And when --block is given, the command waits
           forever with blocking timeout.

       qemu-monitor-event [domain] [--event event-name] [--loop] [--timeout seconds] [--pretty]
       [--regex] [--no-case] [--timestamp]
           Wait for arbitrary QEMU monitor events to occur, and print out the details of events
           as they happen.  The events can optionally be filtered by domain or event-name.  The
           'query-events' QMP command can be used via qemu-monitor-command to learn what events
           are supported.  If --regex is used, event-name is a basic regular expression instead
           of a literal string.  If --no-case is used, event-name will match case-insensitively.

           By default, this command is one-shot, and returns success once an event occurs; you
           can send SIGINT (usually via "Ctrl-C") to quit immediately.  If --timeout is
           specified, the command gives up waiting for events after seconds have elapsed.  With
           --loop, the command prints all events until a timeout or interrupt key.  If --pretty
           is specified, any JSON event details are pretty-printed for better legibility.

           When --timestamp is used, a human-readable timestamp will be printed before the event,
           and the timing information provided by QEMU will be omitted.

       lxc-enter-namespace domain [--noseclabel] -- /path/to/binary [arg1, [arg2, ...]]
           Enter the namespace of domain and execute the command "/path/to/binary" passing the
           requested args. The binary path is relative to the container root filesystem, not the
           host root filesystem. The binary will inherit the environment variables / console
           visible to virsh. The command will be run with the same sVirt context and cgroups
           placement as processes within the container. This command only works when connected to
           the LXC hypervisor driver.  This command succeeds only if "/path/to/binary" has 0 exit
           status.

           By default the new process will run with the security label of the new parent
           container. Use the --noseclabel option to instead have the process keep the same
           security label as "virsh".

ENVIRONMENT

       The following environment variables can be set to alter the behaviour of "virsh"

       VIRSH_DEBUG=<0 to 4>
           Turn on verbose debugging of virsh commands. Valid levels are

           •   VIRSH_DEBUG=0

               DEBUG - Messages at ALL levels get logged

           •   VIRSH_DEBUG=1

               INFO - Logs messages at levels INFO, NOTICE, WARNING and ERROR

           •   VIRSH_DEBUG=2

               NOTICE - Logs messages at levels NOTICE, WARNING and ERROR

           •   VIRSH_DEBUG=3

               WARNING - Logs messages at levels WARNING and ERROR

           •   VIRSH_DEBUG=4

               ERROR - Messages at only ERROR level gets logged.

       VIRSH_LOG_FILE="LOGFILE"
           The file to log virsh debug messages.

       VIRSH_DEFAULT_CONNECT_URI
           The hypervisor to connect to by default. Set this to a URI, in the same format as
           accepted by the connect option. This environment variable is deprecated in favour of
           the global LIBVIRT_DEFAULT_URI variable which serves the same purpose.

       LIBVIRT_DEFAULT_URI
           The hypervisor to connect to by default. Set this to a URI, in the same format as
           accepted by the connect option. This overrides the default URI set in any client
           config file and prevents libvirt from probing for drivers.

       VISUAL
           The editor to use by the edit and related options.

       EDITOR
           The editor to use by the edit and related options, if "VISUAL" is not set.

       VIRSH_HISTSIZE
           The number of commands to remember in the command  history.  The default value is 500.

       LIBVIRT_DEBUG=LEVEL
           Turn on verbose debugging of all libvirt API calls. Valid levels are

           •   LIBVIRT_DEBUG=1

               Messages at level DEBUG or above

           •   LIBVIRT_DEBUG=2

               Messages at level INFO or above

           •   LIBVIRT_DEBUG=3

               Messages at level WARNING or above

           •   LIBVIRT_DEBUG=4

               Messages at level ERROR

           For further information about debugging options consult
           <https://libvirt.org/logging.html>

BUGS

       Report any bugs discovered to the libvirt community via the mailing list
       <https://libvirt.org/contact.html> or bug tracker <https://libvirt.org/bugs.html>.
       Alternatively report bugs to your software distributor / vendor.

AUTHORS

         Please refer to the AUTHORS file distributed with libvirt.

         Based on the xm man page by:
         Sean Dague <sean at dague dot net>
         Daniel Stekloff <dsteklof at us dot ibm dot com>

COPYRIGHT

       Copyright (C) 2005, 2007-2015 Red Hat, Inc., and the authors listed in the libvirt AUTHORS
       file.

LICENSE

       virsh is distributed under the terms of the GNU LGPL v2+.  This is free software; see the
       source for copying conditions. There is NO warranty; not even for MERCHANTABILITY or
       FITNESS FOR A PARTICULAR PURPOSE

SEE ALSO

       virt-install(1), virt-xml-validate(1), virt-top(1), virt-df(1), <https://libvirt.org/>