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       xnbd-watchdog - Watch a NBD device as started by xnbd-client(1)


       xnbd-watchdog [--timeout SECONDS] [--interval SECONDS]
       [--recovery-command COMMAND] [--recovery-command-reboot] [NBD_DEVICE]


       With the xnbd-watchdog, you can monitor a running xnbd-client and
       trigger actions on failure.


       The following options are supported:

       --timeout SECONDS
           Triggers the recovery command action if the watchdog process is
           unable to connect to the NBD_DEVICE within the given timeout. If
           not given, this defaults to 10 seconds.

       --interval SECONDS
           Specifies the polling interval between probes. If not given, this
           defaults to 10 seconds.

       --recovery-command COMMAND
           If given, the COMMAND is executed if the watchdog is unable to
           connect the NBD device after timeout exceeded.

           This argument is a shortcut for --recovery-command "reboot now".
           That is, it will reboot the server upon failure.


       The following positional options are supported:

           The local nbd-device to be associated with the remote xnbd-server.




       The NBD kernel module and the NBD tools have been written by Pavel
       Macheck ( and is now maintained by Paul Clements

       The xNBD userland programs have been written by Takahiro Hirofuchi

       This manual page was written by Arno Toell ( for the
       Debian GNU/Linux system (but may be used by others). Permission is
       granted to copy, distribute and/or modify this document under the terms
       of the GNU General Public License, version 2, as published by the Free
       Software Foundation.

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