Provided by: qemu-guest-agent_8.2.2+ds-0ubuntu1.5_amd64 
NAME
qemu-ga-ref - QEMU Guest Agent Protocol Reference
Contents
• QEMU Guest Agent Protocol Reference
• General note concerning the use of guest agent interfaces
• "unsupported" is a higher-level error than the errors that individual commands might document. The
caller should always be prepared to receive QERR_UNSUPPORTED, even if the given command doesn't
specify it, or doesn't document any failure mode at all.
• QEMU guest agent protocol commands and structs
• guest-sync-delimited (Command)
• guest-sync (Command)
• guest-ping (Command)
• guest-get-time (Command)
• guest-set-time (Command)
• GuestAgentCommandInfo (Object)
• GuestAgentInfo (Object)
• guest-info (Command)
• guest-shutdown (Command)
• guest-file-open (Command)
• guest-file-close (Command)
• GuestFileRead (Object)
• guest-file-read (Command)
• GuestFileWrite (Object)
• guest-file-write (Command)
• GuestFileSeek (Object)
• QGASeek (Enum)
• GuestFileWhence (Alternate)
• guest-file-seek (Command)
• guest-file-flush (Command)
• GuestFsfreezeStatus (Enum)
• guest-fsfreeze-status (Command)
• guest-fsfreeze-freeze (Command)
• guest-fsfreeze-freeze-list (Command)
• guest-fsfreeze-thaw (Command)
• GuestFilesystemTrimResult (Object)
• GuestFilesystemTrimResponse (Object)
• guest-fstrim (Command)
• guest-suspend-disk (Command)
• guest-suspend-ram (Command)
• guest-suspend-hybrid (Command)
• GuestIpAddressType (Enum)
• GuestIpAddress (Object)
• GuestNetworkInterfaceStat (Object)
• GuestNetworkInterface (Object)
• guest-network-get-interfaces (Command)
• GuestLogicalProcessor (Object)
• guest-get-vcpus (Command)
• guest-set-vcpus (Command)
• GuestDiskBusType (Enum)
• GuestPCIAddress (Object)
• GuestCCWAddress (Object)
• GuestDiskAddress (Object)
• GuestNVMeSmart (Object)
• GuestDiskSmart (Object)
• GuestDiskInfo (Object)
• guest-get-disks (Command)
• GuestFilesystemInfo (Object)
• guest-get-fsinfo (Command)
• guest-set-user-password (Command)
• GuestMemoryBlock (Object)
• guest-get-memory-blocks (Command)
• GuestMemoryBlockResponseType (Enum)
• GuestMemoryBlockResponse (Object)
• guest-set-memory-blocks (Command)
• GuestMemoryBlockInfo (Object)
• guest-get-memory-block-info (Command)
• GuestExecStatus (Object)
• guest-exec-status (Command)
• GuestExec (Object)
• GuestExecCaptureOutputMode (Enum)
• GuestExecCaptureOutput (Alternate)
• guest-exec (Command)
• GuestHostName (Object)
• guest-get-host-name (Command)
• GuestUser (Object)
• guest-get-users (Command)
• GuestTimezone (Object)
• guest-get-timezone (Command)
• GuestOSInfo (Object)
• guest-get-osinfo (Command)
• GuestDeviceType (Enum)
• GuestDeviceIdPCI (Object)
• GuestDeviceId (Object)
• GuestDeviceInfo (Object)
• guest-get-devices (Command)
• GuestAuthorizedKeys (Object)
• guest-ssh-get-authorized-keys (Command)
• guest-ssh-add-authorized-keys (Command)
• guest-ssh-remove-authorized-keys (Command)
• GuestDiskStats (Object)
• GuestDiskStatsInfo (Object)
• guest-get-diskstats (Command)
• GuestCpuStatsType (Enum)
• GuestLinuxCpuStats (Object)
• GuestCpuStats (Object)
• guest-get-cpustats (Command)
GENERAL NOTE CONCERNING THE USE OF GUEST AGENT INTERFACES
"unsupported" is a higher-level error than the errors that individual commands might document. The
caller should always be prepared to receive QERR_UNSUPPORTED, even if the given command doesn't specify
it, or doesn't document any failure mode at all.
QEMU GUEST AGENT PROTOCOL COMMANDS AND STRUCTS
guest-sync-delimited (Command)
Echo back a unique integer value, and prepend to response a leading sentinel byte (0xFF) the client can
check scan for.
This is used by clients talking to the guest agent over the wire to ensure the stream is in sync and
doesn't contain stale data from previous client. It must be issued upon initial connection, and after
any client-side timeouts (including timeouts on receiving a response to this command).
After issuing this request, all guest agent responses should be ignored until the response containing the
unique integer value the client passed in is returned. Receival of the 0xFF sentinel byte must be
handled as an indication that the client's lexer/tokenizer/parser state should be flushed/reset in
preparation for reliably receiving the subsequent response. As an optimization, clients may opt to
ignore all data until a sentinel value is receiving to avoid unnecessary processing of stale data.
Similarly, clients should also precede this request with a 0xFF byte to make sure the guest agent flushes
any partially read JSON data from a previous client connection.
Arguments
id: int
randomly generated 64-bit integer
Returns
The unique integer id passed in by the client
Since
1.1
guest-sync (Command)
Echo back a unique integer value
This is used by clients talking to the guest agent over the wire to ensure the stream is in sync and
doesn't contain stale data from previous client. All guest agent responses should be ignored until the
provided unique integer value is returned, and it is up to the client to handle stale whole or
partially-delivered JSON text in such a way that this response can be obtained.
In cases where a partial stale response was previously received by the client, this cannot always be done
reliably. One particular scenario being if qemu-ga responses are fed character-by-character into a JSON
parser. In these situations, using guest-sync-delimited may be optimal.
For clients that fetch responses line by line and convert them to JSON objects, guest-sync should be
sufficient, but note that in cases where the channel is dirty some attempts at parsing the response may
result in a parser error.
Such clients should also precede this command with a 0xFF byte to make sure the guest agent flushes any
partially read JSON data from a previous session.
Arguments
id: int
randomly generated 64-bit integer
Returns
The unique integer id passed in by the client
Since
0.15.0
guest-ping (Command)
Ping the guest agent, a non-error return implies success
Since
0.15.0
guest-get-time (Command)
Get the information about guest's System Time relative to the Epoch of 1970-01-01 in UTC.
Returns
Time in nanoseconds.
Since
1.5
guest-set-time (Command)
Set guest time.
When a guest is paused or migrated to a file then loaded from that file, the guest OS has no idea that
there was a big gap in the time. Depending on how long the gap was, NTP might not be able to
resynchronize the guest.
This command tries to set guest's System Time to the given value, then sets the Hardware Clock (RTC) to
the current System Time. This will make it easier for a guest to resynchronize without waiting for NTP.
If no time is specified, then the time to set is read from RTC. However, this may not be supported on all
platforms (i.e. Windows). If that's the case users are advised to always pass a value.
Arguments
time: int (optional)
time of nanoseconds, relative to the Epoch of 1970-01-01 in UTC.
Returns
Nothing on success.
Since
1.5
GuestAgentCommandInfo (Object)
Information about guest agent commands.
Members
name: string
name of the command
enabled: boolean
whether command is currently enabled by guest admin
success-response: boolean
whether command returns a response on success (since 1.7)
Since
1.1.0
GuestAgentInfo (Object)
Information about guest agent.
Members
version: string
guest agent version
supported_commands: array of GuestAgentCommandInfo
Information about guest agent commands
Since
0.15.0
guest-info (Command)
Get some information about the guest agent.
Returns
GuestAgentInfo
Since
0.15.0
guest-shutdown (Command)
Initiate guest-activated shutdown. Note: this is an asynchronous shutdown request, with no guarantee of
successful shutdown.
Arguments
mode: string (optional)
"halt", "powerdown" (default), or "reboot"
This command does NOT return a response on success. Success condition is indicated by the VM exiting
with a zero exit status or, when running with --no-shutdown, by issuing the query-status QMP command to
confirm the VM status is "shutdown".
Since
0.15.0
guest-file-open (Command)
Open a file in the guest and retrieve a file handle for it
Arguments
path: string
Full path to the file in the guest to open.
mode: string (optional)
open mode, as per fopen(), "r" is the default.
Returns
Guest file handle on success.
Since
0.15.0
guest-file-close (Command)
Close an open file in the guest
Arguments
handle: int
filehandle returned by guest-file-open
Returns
Nothing on success.
Since
0.15.0
GuestFileRead (Object)
Result of guest agent file-read operation
Members
count: int
number of bytes read (note: count is before base64-encoding is applied)
buf-b64: string
base64-encoded bytes read
eof: boolean
whether EOF was encountered during read operation.
Since
0.15.0
guest-file-read (Command)
Read from an open file in the guest. Data will be base64-encoded. As this command is just for limited,
ad-hoc debugging, such as log file access, the number of bytes to read is limited to 48 MB.
Arguments
handle: int
filehandle returned by guest-file-open
count: int (optional)
maximum number of bytes to read (default is 4KB, maximum is 48MB)
Returns
GuestFileRead on success.
Since
0.15.0
GuestFileWrite (Object)
Result of guest agent file-write operation
Members
count: int
number of bytes written (note: count is actual bytes written, after base64-decoding of provided
buffer)
eof: boolean
whether EOF was encountered during write operation.
Since
0.15.0
guest-file-write (Command)
Write to an open file in the guest.
Arguments
handle: int
filehandle returned by guest-file-open
buf-b64: string
base64-encoded string representing data to be written
count: int (optional)
bytes to write (actual bytes, after base64-decode), default is all content in buf-b64 buffer after
base64 decoding
Returns
GuestFileWrite on success.
Since
0.15.0
GuestFileSeek (Object)
Result of guest agent file-seek operation
Members
position: int
current file position
eof: boolean
whether EOF was encountered during file seek
Since
0.15.0
QGASeek (Enum)
Symbolic names for use in guest-file-seek
Values
set Set to the specified offset (same effect as 'whence':0)
cur Add offset to the current location (same effect as 'whence':1)
end Add offset to the end of the file (same effect as 'whence':2)
Since
2.6
GuestFileWhence (Alternate)
Controls the meaning of offset to guest-file-seek.
Members
value: int
Integral value (0 for set, 1 for cur, 2 for end), available for historical reasons, and might
differ from the host's or guest's SEEK_* values (since: 0.15)
name: QGASeek
Symbolic name, and preferred interface
Since
2.6
guest-file-seek (Command)
Seek to a position in the file, as with fseek(), and return the current file position afterward. Also
encapsulates ftell()'s functionality, with offset=0 and whence=1.
Arguments
handle: int
filehandle returned by guest-file-open
offset: int
bytes to skip over in the file stream
whence: GuestFileWhence
Symbolic or numeric code for interpreting offset
Returns
GuestFileSeek on success.
Since
0.15.0
guest-file-flush (Command)
Write file changes buffered in userspace to disk/kernel buffers
Arguments
handle: int
filehandle returned by guest-file-open
Returns
Nothing on success.
Since
0.15.0
GuestFsfreezeStatus (Enum)
An enumeration of filesystem freeze states
Values
thawed filesystems thawed/unfrozen
frozen all non-network guest filesystems frozen
Since
0.15.0
guest-fsfreeze-status (Command)
Get guest fsfreeze state.
Returns
GuestFsfreezeStatus ("thawed", "frozen", etc., as defined below)
Note
This may fail to properly report the current state as a result of some other guest processes having
issued an fs freeze/thaw.
Since
0.15.0
guest-fsfreeze-freeze (Command)
Sync and freeze all freezable, local guest filesystems. If this command succeeded, you may call
guest-fsfreeze-thaw later to unfreeze.
Note
On Windows, the command is implemented with the help of a Volume Shadow-copy Service DLL helper. The
frozen state is limited for up to 10 seconds by VSS.
Returns
Number of file systems currently frozen. On error, all filesystems will be thawed. If no filesystems
are frozen as a result of this call, then guest-fsfreeze-status will remain "thawed" and calling
guest-fsfreeze-thaw is not necessary.
Since
0.15.0
guest-fsfreeze-freeze-list (Command)
Sync and freeze specified guest filesystems. See also guest-fsfreeze-freeze.
Arguments
mountpoints: array of string (optional)
an array of mountpoints of filesystems to be frozen. If omitted, every mounted filesystem is
frozen. Invalid mount points are ignored.
Returns
Number of file systems currently frozen. On error, all filesystems will be thawed.
Since
2.2
guest-fsfreeze-thaw (Command)
Unfreeze all frozen guest filesystems
Returns
Number of file systems thawed by this call
Note
if return value does not match the previous call to guest-fsfreeze-freeze, this likely means some
freezable filesystems were unfrozen before this call, and that the filesystem state may have changed
before issuing this command.
Since
0.15.0
GuestFilesystemTrimResult (Object)
Members
path: string
path that was trimmed
error: string (optional)
an error message when trim failed
trimmed: int (optional)
bytes trimmed for this path
minimum: int (optional)
reported effective minimum for this path
Since
2.4
GuestFilesystemTrimResponse (Object)
Members
paths: array of GuestFilesystemTrimResult
list of GuestFilesystemTrimResult per path that was trimmed
Since
2.4
guest-fstrim (Command)
Discard (or "trim") blocks which are not in use by the filesystem.
Arguments
minimum: int (optional)
Minimum contiguous free range to discard, in bytes. Free ranges 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".
Returns
A GuestFilesystemTrimResponse which contains the status of all trimmed paths. (since 2.4)
Since
1.2
guest-suspend-disk (Command)
Suspend guest to disk.
This command attempts to suspend the guest using three strategies, in this order:
• systemd hibernate
• pm-utils (via pm-hibernate)
• manual write into sysfs
This command does NOT return a response on success. There is a high chance the command succeeded if the
VM exits with a zero exit status or, when running with --no-shutdown, by issuing the query-status QMP
command to to confirm the VM status is "shutdown". However, the VM could also exit (or set its status to
"shutdown") due to other reasons.
The following errors may be returned:
• If suspend to disk is not supported, Unsupported
Notes
It's strongly recommended to issue the guest-sync command before sending commands when the guest resumes
Since
1.1
guest-suspend-ram (Command)
Suspend guest to ram.
This command attempts to suspend the guest using three strategies, in this order:
• systemd hibernate
• pm-utils (via pm-hibernate)
• manual write into sysfs
IMPORTANT: guest-suspend-ram requires working wakeup support in QEMU. You should check QMP command
query-current-machine returns wakeup-suspend-support: true before issuing this command. Failure in doing
so can result in a suspended guest that QEMU will not be able to awaken, forcing the user to power cycle
the guest to bring it back.
This command does NOT return a response on success. There are two options to check for success:
1. Wait for the SUSPEND QMP event from QEMU
2. Issue the query-status QMP command to confirm the VM status is "suspended"
The following errors may be returned:
• If suspend to ram is not supported, Unsupported
Notes
It's strongly recommended to issue the guest-sync command before sending commands when the guest resumes
Since
1.1
guest-suspend-hybrid (Command)
Save guest state to disk and suspend to ram.
This command attempts to suspend the guest by executing, in this order:
• systemd hybrid-sleep
• pm-utils (via pm-suspend-hybrid)
IMPORTANT: guest-suspend-hybrid requires working wakeup support in QEMU. You should check QMP command
query-current-machine returns wakeup-suspend-support: true before issuing this command. Failure in doing
so can result in a suspended guest that QEMU will not be able to awaken, forcing the user to power cycle
the guest to bring it back.
This command does NOT return a response on success. There are two options to check for success:
1. Wait for the SUSPEND QMP event from QEMU
2. Issue the query-status QMP command to confirm the VM status is "suspended"
The following errors may be returned:
• If hybrid suspend is not supported, Unsupported
Notes
It's strongly recommended to issue the guest-sync command before sending commands when the guest resumes
Since
1.1
GuestIpAddressType (Enum)
An enumeration of supported IP address types
Values
ipv4 IP version 4
ipv6 IP version 6
Since
1.1
GuestIpAddress (Object)
Members
ip-address: string
IP address
ip-address-type: GuestIpAddressType
Type of ip-address (e.g. ipv4, ipv6)
prefix: int
Network prefix length of ip-address
Since
1.1
GuestNetworkInterfaceStat (Object)
Members
rx-bytes: int
total bytes received
rx-packets: int
total packets received
rx-errs: int
bad packets received
rx-dropped: int
receiver dropped packets
tx-bytes: int
total bytes transmitted
tx-packets: int
total packets transmitted
tx-errs: int
packet transmit problems
tx-dropped: int
dropped packets transmitted
Since
2.11
GuestNetworkInterface (Object)
Members
name: string
The name of interface for which info are being delivered
hardware-address: string (optional)
Hardware address of name
ip-addresses: array of GuestIpAddress (optional)
List of addresses assigned to name
statistics: GuestNetworkInterfaceStat (optional)
various statistic counters related to name (since 2.11)
Since
1.1
guest-network-get-interfaces (Command)
Get list of guest IP addresses, MAC addresses and netmasks.
Returns
List of GuestNetworkInterface on success.
Since
1.1
GuestLogicalProcessor (Object)
Members
logical-id: int
Arbitrary guest-specific unique identifier of the VCPU.
online: boolean
Whether the VCPU is enabled.
can-offline: boolean (optional)
Whether offlining the VCPU is possible. This member is always filled in by the guest agent when
the structure is returned, and always ignored on input (hence it can be omitted then).
Since
1.5
guest-get-vcpus (Command)
Retrieve the list of the guest's logical processors.
This is a read-only operation.
Returns
The list of all VCPUs the guest knows about. Each VCPU is put on the list exactly once, but their order
is unspecified.
Since
1.5
guest-set-vcpus (Command)
Attempt to reconfigure (currently: enable/disable) logical processors inside the guest.
The input list is processed node by node in order. In each node logical-id is used to look up the guest
VCPU, for which online specifies the requested state. The set of distinct logical-id's is only required
to be a subset of the guest-supported identifiers. There's no restriction on list length or on repeating
the same logical-id (with possibly different online field). Preferably the input list should describe a
modified subset of guest-get-vcpus' return value.
Arguments
vcpus: array of GuestLogicalProcessor
Not documented
Returns
The length of the initial sublist that has been successfully processed. The guest agent maximizes this
value. Possible cases:
• 0: if the vcpus list was empty on input. Guest state has not been changed. Otherwise,
• Error: processing the first node of vcpus failed for the reason returned. Guest state has not been
changed. Otherwise,
• < length(vcpus): more than zero initial nodes have been processed, but not the entire vcpus list.
Guest state has changed accordingly. To retrieve the error (assuming it persists), repeat the call
with the successfully processed initial sublist removed. Otherwise,
• length(vcpus): call successful.
Since
1.5
GuestDiskBusType (Enum)
An enumeration of bus type of disks
Values
ide IDE disks
fdc floppy disks
scsi SCSI disks
virtio virtio disks
xen Xen disks
usb USB disks
uml UML disks
sata SATA disks
sd SD cards
unknown
Unknown bus type
ieee1394
Win IEEE 1394 bus type
ssa Win SSA bus type
fibre Win fiber channel bus type
raid Win RAID bus type
iscsi Win iScsi bus type
sas Win serial-attaches SCSI bus type
mmc Win multimedia card (MMC) bus type
virtual
Win virtual bus type
file-backed-virtual
Win file-backed bus type
nvme NVMe disks (since 7.1)
Since
2.2; 'Unknown' and all entries below since 2.4
GuestPCIAddress (Object)
Members
domain: int
domain id
bus: int
bus id
slot: int
slot id
function: int
function id
Since
2.2
GuestCCWAddress (Object)
Members
cssid: int
channel subsystem image id
ssid: int
subchannel set id
subchno: int
subchannel number
devno: int
device number
Since
6.0
GuestDiskAddress (Object)
Members
pci-controller: GuestPCIAddress
controller's PCI address (fields are set to -1 if invalid)
bus-type: GuestDiskBusType
bus type
bus: int
bus id
target: int
target id
unit: int
unit id
serial: string (optional)
serial number (since: 3.1)
dev: string (optional)
device node (POSIX) or device UNC (Windows) (since: 3.1)
ccw-address: GuestCCWAddress (optional)
CCW address on s390x (since: 6.0)
Since
2.2
GuestNVMeSmart (Object)
NVMe smart information, based on NVMe specification, section <SMART / Health Information (Log Identifier
02h)>
Members
critical-warning: int
Not documented
temperature: int
Not documented
available-spare: int
Not documented
available-spare-threshold: int
Not documented
percentage-used: int
Not documented
data-units-read-lo: int
Not documented
data-units-read-hi: int
Not documented
data-units-written-lo: int
Not documented
data-units-written-hi: int
Not documented
host-read-commands-lo: int
Not documented
host-read-commands-hi: int
Not documented
host-write-commands-lo: int
Not documented
host-write-commands-hi: int
Not documented
controller-busy-time-lo: int
Not documented
controller-busy-time-hi: int
Not documented
power-cycles-lo: int
Not documented
power-cycles-hi: int
Not documented
power-on-hours-lo: int
Not documented
power-on-hours-hi: int
Not documented
unsafe-shutdowns-lo: int
Not documented
unsafe-shutdowns-hi: int
Not documented
media-errors-lo: int
Not documented
media-errors-hi: int
Not documented
number-of-error-log-entries-lo: int
Not documented
number-of-error-log-entries-hi: int
Not documented
Since
7.1
GuestDiskSmart (Object)
Disk type related smart information.
• nvme: NVMe disk smart
Members
type: GuestDiskBusType
Not documented
The members of GuestNVMeSmart when type is "nvme"
Since
7.1
GuestDiskInfo (Object)
Members
name: string
device node (Linux) or device UNC (Windows)
partition: boolean
whether this is a partition or disk
dependencies: array of string (optional)
list of device dependencies; e.g. for LVs of the LVM this will hold the list of PVs, for LUKS
encrypted volume this will contain the disk where the volume is placed. (Linux)
address: GuestDiskAddress (optional)
disk address information (only for non-virtual devices)
alias: string (optional)
optional alias assigned to the disk, on Linux this is a name assigned by device mapper
smart: GuestDiskSmart (optional)
disk smart information (Since 7.1)
Since
5.2
guest-get-disks (Command)
Returns
The list of disks in the guest. For Windows these are only the physical disks. On Linux these are all
root block devices of non-zero size including e.g. removable devices, loop devices, NBD, etc.
Since
5.2
GuestFilesystemInfo (Object)
Members
name: string
disk name
mountpoint: string
mount point path
type: string
file system type string
used-bytes: int (optional)
file system used bytes (since 3.0)
total-bytes: int (optional)
non-root file system total bytes (since 3.0)
disk: array of GuestDiskAddress
an array of disk hardware information that the volume lies on, which may be empty if the disk type
is not supported
Since
2.2
guest-get-fsinfo (Command)
Returns
The list of filesystems information mounted in the guest. The returned mountpoints may be specified to
guest-fsfreeze-freeze-list. Network filesystems (such as CIFS and NFS) are not listed.
Since
2.2
guest-set-user-password (Command)
Arguments
username: string
the user account whose password to change
password: string
the new password entry string, base64 encoded
crypted: boolean
true if password is already crypt()d, false if raw
If the crypted flag is true, it is the caller's responsibility to ensure the correct crypt() encryption
scheme is used. This command does not attempt to interpret or report on the encryption scheme. Refer to
the documentation of the guest operating system in question to determine what is supported.
Not all guest operating systems will support use of the crypted flag, as they may require the clear-text
password
The password parameter must always be base64 encoded before transmission, even if already crypt()d, to
ensure it is 8-bit safe when passed as JSON.
Returns
Nothing on success.
Since
2.3
GuestMemoryBlock (Object)
Members
phys-index: int
Arbitrary guest-specific unique identifier of the MEMORY BLOCK.
online: boolean
Whether the MEMORY BLOCK is enabled in guest.
can-offline: boolean (optional)
Whether offlining the MEMORY BLOCK is possible. This member is always filled in by the guest
agent when the structure is returned, and always ignored on input (hence it can be omitted then).
Since
2.3
guest-get-memory-blocks (Command)
Retrieve the list of the guest's memory blocks.
This is a read-only operation.
Returns
The list of all memory blocks the guest knows about. Each memory block is put on the list exactly once,
but their order is unspecified.
Since
2.3
GuestMemoryBlockResponseType (Enum)
An enumeration of memory block operation result.
Values
success
the operation of online/offline memory block is successful.
not-found
can't find the corresponding memoryXXX directory in sysfs.
operation-not-supported
for some old kernels, it does not support online or offline memory block.
operation-failed
the operation of online/offline memory block fails, because of some errors happen.
Since
2.3
GuestMemoryBlockResponse (Object)
Members
phys-index: int
same with the 'phys-index' member of GuestMemoryBlock.
response: GuestMemoryBlockResponseType
the result of memory block operation.
error-code: int (optional)
the error number. When memory block operation fails, we assign the value of 'errno' to this
member, it indicates what goes wrong. When the operation succeeds, it will be omitted.
Since
2.3
guest-set-memory-blocks (Command)
Attempt to reconfigure (currently: enable/disable) state of memory blocks inside the guest.
The input list is processed node by node in order. In each node phys-index is used to look up the guest
MEMORY BLOCK, for which online specifies the requested state. The set of distinct phys-index's is only
required to be a subset of the guest-supported identifiers. There's no restriction on list length or on
repeating the same phys-index (with possibly different online field). Preferably the input list should
describe a modified subset of guest-get-memory-blocks' return value.
Arguments
mem-blks: array of GuestMemoryBlock
Not documented
Returns
The operation results, it is a list of GuestMemoryBlockResponse, which is corresponding to the input
list.
Note: it will return NULL if the mem-blks list was empty on input, or there is an error, and in this
case, guest state will not be changed.
Since
2.3
GuestMemoryBlockInfo (Object)
Members
size: int
the size (in bytes) of the guest memory blocks, which are the minimal units of memory block
online/offline operations (also called Logical Memory Hotplug).
Since
2.3
guest-get-memory-block-info (Command)
Get information relating to guest memory blocks.
Returns
GuestMemoryBlockInfo
Since
2.3
GuestExecStatus (Object)
Members
exited: boolean
true if process has already terminated.
exitcode: int (optional)
process exit code if it was normally terminated.
signal: int (optional)
signal number (linux) or unhandled exception code (windows) if the process was abnormally
terminated.
out-data: string (optional)
base64-encoded stdout of the process. This field will only be populated after the process exits.
err-data: string (optional)
base64-encoded stderr of the process. Note: out-data and err-data are present only if
'capture-output' was specified for 'guest-exec'. This field will only be populated after the
process exits.
out-truncated: boolean (optional)
true if stdout was not fully captured due to size limitation.
err-truncated: boolean (optional)
true if stderr was not fully captured due to size limitation.
Since
2.5
guest-exec-status (Command)
Check status of process associated with PID retrieved via guest-exec. Reap the process and associated
metadata if it has exited.
Arguments
pid: int
pid returned from guest-exec
Returns
GuestExecStatus on success.
Since
2.5
GuestExec (Object)
Members
pid: int
pid of child process in guest OS
Since
2.5
GuestExecCaptureOutputMode (Enum)
An enumeration of guest-exec capture modes.
Values
none do not capture any output
stdout only capture stdout
stderr only capture stderr
separated
capture both stdout and stderr, but separated into GuestExecStatus out-data and err-data,
respectively
merged (If: not CONFIG_WIN32)
capture both stdout and stderr, but merge together into out-data. not effective on windows guests.
Since
8.0
GuestExecCaptureOutput (Alternate)
Controls what guest-exec output gets captures.
Members
flag: boolean
captures both stdout and stderr if true. Equivalent to GuestExecCaptureOutputMode::all. (since
2.5)
mode: GuestExecCaptureOutputMode
capture mode; preferred interface
Since
8.0
guest-exec (Command)
Execute a command in the guest
Arguments
path: string
path or executable name to execute
arg: array of string (optional)
argument list to pass to executable
env: array of string (optional)
environment variables to pass to executable
input-data: string (optional)
data to be passed to process stdin (base64 encoded)
capture-output: GuestExecCaptureOutput (optional)
bool flag to enable capture of stdout/stderr of running process. defaults to false.
Returns
PID on success.
Since
2.5
GuestHostName (Object)
Members
host-name: string
Fully qualified domain name of the guest OS
Since
2.10
guest-get-host-name (Command)
Return a name for the machine.
The returned name is not necessarily a fully-qualified domain name, or even present in DNS or some other
name service at all. It need not even be unique on your local network or site, but usually it is.
Returns
the host name of the machine on success
Since
2.10
GuestUser (Object)
Members
user: string
Username
domain: string (optional)
Logon domain (windows only)
login-time: number
Time of login of this user on the computer. If multiple instances of the user are logged in, the
earliest login time is reported. The value is in fractional seconds since epoch time.
Since
2.10
guest-get-users (Command)
Retrieves a list of currently active users on the VM.
Returns
A unique list of users.
Since
2.10
GuestTimezone (Object)
Members
zone: string (optional)
Timezone name. These values may differ depending on guest/OS and should only be used for
informational purposes.
offset: int
Offset to UTC in seconds, negative numbers for time zones west of GMT, positive numbers for east
Since
2.10
guest-get-timezone (Command)
Retrieves the timezone information from the guest.
Returns
A GuestTimezone dictionary.
Since
2.10
GuestOSInfo (Object)
Members
kernel-release: string (optional)
• POSIX: release field returned by uname(2)
• Windows: build number of the OS
kernel-version: string (optional)
• POSIX: version field returned by uname(2)
• Windows: version number of the OS
machine: string (optional)
• POSIX: machine field returned by uname(2)
• Windows: one of x86, x86_64, arm, ia64
id: string (optional)
• POSIX: as defined by os-release(5)
• Windows: contains string "mswindows"
name: string (optional)
• POSIX: as defined by os-release(5)
• Windows: contains string "Microsoft Windows"
pretty-name: string (optional)
• POSIX: as defined by os-release(5)
• Windows: product name, e.g. "Microsoft Windows 10 Enterprise"
version: string (optional)
• POSIX: as defined by os-release(5)
• Windows: long version string, e.g. "Microsoft Windows Server 2008"
version-id: string (optional)
• POSIX: as defined by os-release(5)
• Windows: short version identifier, e.g. "7" or "20012r2"
variant: string (optional)
• POSIX: as defined by os-release(5)
• Windows: contains string "server" or "client"
variant-id: string (optional)
• POSIX: as defined by os-release(5)
• Windows: contains string "server" or "client"
Notes
On POSIX systems the fields id, name, pretty-name, version, version-id, variant and variant-id follow the
definition specified in os-release(5). Refer to the manual page for exact description of the fields.
Their values are taken from the os-release file. If the file is not present in the system, or the values
are not present in the file, the fields are not included.
On Windows the values are filled from information gathered from the system.
Since
2.10
guest-get-osinfo (Command)
Retrieve guest operating system information
Returns
GuestOSInfo
Since
2.10
GuestDeviceType (Enum)
Values
pci Not documented
GuestDeviceIdPCI (Object)
Members
vendor-id: int
vendor ID
device-id: int
device ID
Since
5.2
GuestDeviceId (Object)
Id of the device - pci: PCI ID, since: 5.2
Members
type: GuestDeviceType
Not documented
The members of GuestDeviceIdPCI when type is "pci"
Since
5.2
GuestDeviceInfo (Object)
Members
driver-name: string
name of the associated driver
driver-date: int (optional)
driver release date, in nanoseconds since the epoch
driver-version: string (optional)
driver version
id: GuestDeviceId (optional)
device ID
Since
5.2
guest-get-devices (Command)
Retrieve information about device drivers in Windows guest
Returns
GuestDeviceInfo
Since
5.2
GuestAuthorizedKeys (Object)
Members
keys: array of string
public keys (in OpenSSH/sshd(8) authorized_keys format)
Since
5.2
If
CONFIG_POSIX
guest-ssh-get-authorized-keys (Command)
Arguments
username: string
the user account to add the authorized keys
Return the public keys from user .ssh/authorized_keys on Unix systems (not implemented for other
systems).
Returns
GuestAuthorizedKeys
Since
5.2
If
CONFIG_POSIX
guest-ssh-add-authorized-keys (Command)
Arguments
username: string
the user account to add the authorized keys
keys: array of string
the public keys to add (in OpenSSH/sshd(8) authorized_keys format)
reset: boolean (optional)
ignore the existing content, set it with the given keys only
Append public keys to user .ssh/authorized_keys on Unix systems (not implemented for other systems).
Returns
Nothing on success.
Since
5.2
If
CONFIG_POSIX
guest-ssh-remove-authorized-keys (Command)
Arguments
username: string
the user account to remove the authorized keys
keys: array of string
the public keys to remove (in OpenSSH/sshd(8) authorized_keys format)
Remove public keys from the user .ssh/authorized_keys on Unix systems (not implemented for other
systems). It's not an error if the key is already missing.
Returns
Nothing on success.
Since
5.2
If
CONFIG_POSIX
GuestDiskStats (Object)
Members
read-sectors: int (optional)
sectors read
read-ios: int (optional)
reads completed successfully
read-merges: int (optional)
read requests merged
write-sectors: int (optional)
sectors written
write-ios: int (optional)
writes completed
write-merges: int (optional)
write requests merged
discard-sectors: int (optional)
sectors discarded
discard-ios: int (optional)
discards completed successfully
discard-merges: int (optional)
discard requests merged
flush-ios: int (optional)
flush requests completed successfully
read-ticks: int (optional)
time spent reading(ms)
write-ticks: int (optional)
time spent writing(ms)
discard-ticks: int (optional)
time spent discarding(ms)
flush-ticks: int (optional)
time spent flushing(ms)
ios-pgr: int (optional)
number of I/Os currently in flight
total-ticks: int (optional)
time spent doing I/Os (ms)
weight-ticks: int (optional)
weighted time spent doing I/Os since the last update of this field(ms)
Since
7.1
GuestDiskStatsInfo (Object)
Members
name: string
disk name
major: int
major device number of disk
minor: int
minor device number of disk
stats: GuestDiskStats
Not documented
guest-get-diskstats (Command)
Retrieve information about disk stats.
Returns
List of disk stats of guest.
Since
7.1
GuestCpuStatsType (Enum)
An enumeration of OS type
Values
linux Not documented
Since
7.1
GuestLinuxCpuStats (Object)
CPU statistics of Linux
Members
cpu: int
CPU index in guest OS
user: int
Time spent in user mode
nice: int
Time spent in user mode with low priority (nice)
system: int
Time spent in system mode
idle: int
Time spent in the idle task
iowait: int (optional)
Time waiting for I/O to complete (since Linux 2.5.41)
irq: int (optional)
Time servicing interrupts (since Linux 2.6.0-test4)
softirq: int (optional)
Time servicing softirqs (since Linux 2.6.0-test4)
steal: int (optional)
Stolen time by host (since Linux 2.6.11)
guest: int (optional)
ime spent running a virtual CPU for guest operating systems under the control of the Linux kernel
(since Linux 2.6.24)
guestnice: int (optional)
Time spent running a niced guest (since Linux 2.6.33)
Since
7.1
GuestCpuStats (Object)
Get statistics of each CPU in millisecond.
• linux: Linux style CPU statistics
Members
type: GuestCpuStatsType
Not documented
The members of GuestLinuxCpuStats when type is "linux"
Since
7.1
guest-get-cpustats (Command)
Retrieve information about CPU stats.
Returns
List of CPU stats of guest.
Since
7.1
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