Provided by: drbd8-utils_8.3.13-1.1ubuntu1_i386 bug

NAME

       drbdadm - Administration tool for DRBD .

SYNOPSIS

       drbdadm [-d] [-c {file}] [-t {file}] [-s {cmd}] [-m {cmd}] [-S]
               [-h {host}] [-- {backend-options}] {command} [all |
               resource...]

DESCRIPTION

       Drbdadm is the high level tool of the DRBD program suite.  Drbdadm is
       to drbdsetup and drbdmeta what ifup/ifdown is to ifconfig.  Drbdadm
       reads its configuration file and performs the specified commands by
       calling the drbdsetup and/or the drbdmeta program.

OPTIONS

       -d, --dry-run
           Just prints the calls of drbdsetup to stdout, but does not run the
           commands.

       -c, --config-file file
           Specifies the configuration file drbdadm will use. If this
           parameter is not specified, drbdadm will look for
           /etc/drbd-83.conf, /etc/drbd-08.conf and /etc/drbd.conf.

       -t, --config-to-test file
           Specifies an additional configuration file drbdadm to check. This
           option is only allowed with the dump and the sh-nop commands.

       -s, --drbdsetup file
           Specifies the full path to the drbdsetup program. If this option is
           omitted, drbdadm will look for /sbin/drbdsetup and ./drbdsetup.

       -m, --drbdmeta file
           Specifies the full path to the drbdmeta program. If this option is
           omitted, drbdadm will look for /sbin/drbdmeta and ./drbdmeta.

       -S, --stacked
           Specifies that this command should be performed on a stacked
           resource.

       -P, --peer
           Specifies to which peer node to connect. Only necessary if there
           are more than two host sections in the resource you are working on.

       -- backend-options
           All options following the doubly hyphen are considered
           backend-options. These are passed through to the backend command.
           I.e. to drbdsetup, drbdmeta or drbd-proxy-ctl.

COMMANDS

       attach
           Attaches a local backing block device to the DRBD resource's
           device.

       detach
           Removes the backing storage device from a DRBD resource's device.

       connect
           Sets up the network configuration of the resource's device. If the
           peer device is already configured, the two DRBD devices will
           connect. If there are more than two host sections in the resource
           you need to use the --peer option to select the peer you want to
           connect to.

       disconnect
           Removes the network configuration from the resource. The device
           will then go into StandAlone state.

       syncer
           Loads the resynchronization parameters into the device.

       up
           Is a shortcut for attach and connect.

       down
           Is a shortcut for disconnect and detach.

       primary
           Promote the resource's device into primary role. You need to do
           this before any access to the device, such as creating or mounting
           a file system.

       secondary
           Brings the device back into secondary role. This is needed since in
           a connected DRBD device pair, only one of the two peers may have
           primary role (except if allow-two-primaries is explicitly set in
           the configuration file).

       invalidate
           Forces DRBD to consider the data on the local backing storage
           device as out-of-sync. Therefore DRBD will copy each and every
           block from its peer, to bring the local storage device back in
           sync.

       invalidate-remote
           This command is similar to the invalidate command, however, the
           peer's backing storage is invalidated and hence rewritten with the
           data of the local node.

       resize
           Causes DRBD to re-examine all sizing constraints, and resize the
           resource's device accordingly. For example, if you increased the
           size of your backing storage devices (on both nodes, of course),
           then DRBD will adopt the new size after you called this command on
           one of your nodes. Since new storage space must be synchronised
           this command only works if there is at least one primary node
           present.

           The --assume-peer-has-space allows you to resize a device which is
           currently not connected to the peer. Use with care, since if you do
           not resize the peer's disk as well, further connect attempts of the
           two will fail.

           The --assume-clean allows you to resize an existing device and
           avoid syncing the new space. This is useful when adding addtional
           blank storage to your device. Example:

               # drbdadm -- --assume-clean resize r0

       check-resize
           Calls drbdmeta to eventually move internal meta data. If the
           backing device was resized, while DRBD was not running, meta data
           has to be moved to the end of the device, so that the next attach
           command can succeed.

       create-md
           Initializes the meta data storage. This needs to be done before a
           DRBD resource can be taken online for the first time. In case of
           issues with that command have a look at drbdmeta(8)

       get-gi
           Shows a short textual representation of the data generation
           identifiers.

       show-gi
           Prints a textual representation of the data generation identifiers
           including explanatory information.

       dump-md
           Dumps the whole contents of the meta data storage, including the
           stored bit-map and activity-log, in a textual representation.

       outdate
           Sets the outdated flag in the meta data.

       adjust
           Synchronizes the configuration of the device with your
           configuration file. You should always examine the output of the
           dry-run mode before actually executing this command.

       wait-connect
           Waits until the device is connected to its peer device.

       role
           Shows the current roles of the devices (local/peer). E.g.
           Primary/Secondary

       state
           Deprecated alias for "role", see above.

       cstate
           Shows the current connection state of the devices.

       status
           Shows the current status of all devices defined in the current
           config file, in XML-like format. Example output:

               <drbd-status version="8.3.2" api="88">
               <resources config_file="/etc/drbd.conf">
               <resource minor="0" name="s0" cs="SyncTarget" st1="Secondary" st2="Secondary"
                         ds1="Inconsistent" ds2="UpToDate" resynced_precent="5.9" />
               <resource minor="1" name="s1" cs="WFConnection" st1="Secondary"
                         st2="Unknown" ds1="Inconsistent" ds2="Outdated" />
               <resource minor="3" name="dummy" cs="Unconfigured" />
               <!-- resource minor="4" name="scratch" not available or not yet created -->
               </resources>
               </drbd-status>

       dump
           Just parse the configuration file and dump it to stdout. May be
           used to check the configuration file for syntactic correctness.

       outdate
           Used to mark the node's data as outdated. Usually used by the
           peer's fence-peer handler.

       verify
           Starts online verify. During online verify, data on both nodes is
           compared for equality. See /proc/drbd for online verify progress.
           If out-of-sync blocks are found, they are not resynchronized
           automatically. To do that, disconnect and connect the resource when
           verification has completed.

           See also the notes on data integrity on the drbd.conf manpage.

       pause-sync
           Temporarily suspend an ongoing resynchronization by setting the
           local pause flag. Resync only progresses if neither the local nor
           the remote pause flag is set. It might be desirable to postpone
           DRBD's resynchronization until after any resynchronization of the
           backing storage's RAID setup.

       resume-sync
           Unset the local sync pause flag.

       new-current-uuid
           Generates a new currend UUID and rotates all other UUID values.

           This can be used to shorten the initial resync of a cluster. See
           the drbdsetup manpage for a more details.

       dstate
           Show the current state of the backing storage devices. (local/peer)

       hidden-commands
           Shows all commands undocumented on purpose.

VERSION

       This document was revised for version 8.3.2 of the DRBD distribution.

AUTHOR

       Written by Philipp Reisner philipp.reisner@linbit.com and Lars
       Ellenberg lars.ellenberg@linbit.com

REPORTING BUGS

       Report bugs to drbd-user@lists.linbit.com.

COPYRIGHT

       Copyright 2001-2008 LINBIT Information Technologies, Philipp Reisner,
       Lars Ellenberg. 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

       drbd.conf(5), drbd(8), drbddisk(8), drbdsetup(8), drbdmeta(8) and the
       DRBD project web site[1]

NOTES

        1. DRBD project web site
           http://www.drbd.org/