VIRTLOCKD(8)



VIRTLOCKD(8)                Virtualization Support                VIRTLOCKD(8)

NAME
       virtlockd - libvirt lock management daemon

SYNOPSIS
       virtlockd  [OPTION]...

DESCRIPTION
       The  virtlockd program is a server side daemon component of the libvirt
       virtualization management system that is  used  to  manage  locks  held
       against virtual machine resources, such as their disks.

       This daemon is not used directly by libvirt client applications, rather
       it is called on their behalf by libvirtd. By maintaining the locks in a
       standalone  daemon,  the  main libvirtd daemon can be restarted without
       risk of  losing  locks.   The  virtlockd  daemon  has  the  ability  to
       re-exec() itself upon receiving SIGUSR1, to allow live upgrades without
       downtime.

       The virtlockd daemon listens  for  requests  on  a  local  Unix  domain
       socket.

OPTIONS
       -h, --help

       Display command line help usage then exit.

       -d, --daemon

       Run as a daemon and write PID file.

       -f, --config FILE

       Use this configuration file, overriding the default value.

       -t, --timeout SECONDS

       Automatically shutdown after SECONDS have elapsed with no active client
       or lock.

       -p, --pid-file FILE

       Use this name for the PID file, overriding the default value.

       -v, --verbose

       Enable output of verbose messages.

       -V, --version

       Display version information then exit.

SIGNALS
       On receipt of SIGUSR1, virtlockd will re-exec() its binary, while main-
       taining all current locks and clients. This allows for live upgrades of
       the virtlockd service.

FILES
   When run as root
       o /etc/libvirt/virtlockd.conf

       The default configuration file used by virtlockd, unless overridden  on
       the command line using the -f | --config option.

       o /run/libvirt/virtlockd-sock

       The sockets virtlockd will use.

       o /run/virtlockd.pid

       The PID file to use, unless overridden by the -p | --pid-file option.

   When run as non-root
       o $XDG_CONFIG_HOME/libvirt/virtlockd.conf

       The  default configuration file used by virtlockd, unless overridden on
       the command line using the -f | --config option.

       o $XDG_RUNTIME_DIR/libvirt/virtlockd-sock

       The socket virtlockd will use.

       o $XDG_RUNTIME_DIR/libvirt/virtlockd.pid

       The PID file to use, unless overridden by the -p | --pid-file option.

       If $XDG_CONFIG_HOME is not set in your environment, virtlockd will  use
       $HOME/.config

       If  $XDG_RUNTIME_DIR is not set in your environment, virtlockd will use
       $HOME/.cache

EXAMPLES
       To retrieve the version of virtlockd:

          # virtlockd --version
          virtlockd (libvirt) 1.1.1

       To start virtlockd, instructing it to daemonize and create a PID file:

          # virtlockd -d
          # ls -la /run/virtlockd.pid
          -rw-r--r-- 1 root root 6 Jul  9 02:40 /run/virtlockd.pid

BUGS
       Please report all bugs you discover.  This should be done via either:

       1. the mailing list

          https://libvirt.org/contact.html

       2. the bug tracker

          https://libvirt.org/bugs.html

       Alternatively, you may report bugs to your software distributor /  ven-
       dor.

AUTHORS
       Please refer to the AUTHORS file distributed with libvirt.

COPYRIGHT
       Copyright  (C)  2006-2013  Red Hat, Inc., and the authors listed in the
       libvirt AUTHORS file.

LICENSE
       virtlockd is distributed under the terms of the GNU LGPL  v2.1+.   This
       is  free  software;  see the source for copying conditions. There is NO
       warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PUR-
       POSE

SEE ALSO
       libvirtd(8),  https://libvirt.org/

                                                                  VIRTLOCKD(8)

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