VIRTLOCKD(8)						      Virtualization Support						      VIRTLOCKD(8)

NAME

       virtlockd - libvirt lock management daemon

SYNOPSIS

       virtlockd [ -dv ] [ -f config_file ] [ -p pid_file ]

       virtlockd --version

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.

       -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 maintaining all current locks and clients. This allows for live upgrades
       of the virtlockd service.

FILES

   When run as root.
       SYSCONFDIR/virtlockd.conf
	   The default configuration file used by virtlockd, unless overridden on the command line using the -f|--config option.

       LOCALSTATEDIR/run/libvirt/virtlockd-sock
	   The sockets libvirtd will use.

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

   When run as non-root.
       $XDG_CONFIG_HOME/virtlockd.conf
	   The default configuration file used by libvirtd, unless overridden on the command line using the -f|--config option.

       $XDG_RUNTIME_DIR/libvirt/virtlockd-sock
	   The socket libvirtd will use.

       $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, libvirtd will use $HOME/.config
       If $XDG_RUNTIME_DIR is not set in your environment, libvirtd 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 LOCALSTATEDIR/run/virtlockd.pid
	-rw-r--r-- 1 root root 6 Jul  9 02:40 LOCALSTATEDIR/run/virtlockd.pid
	#

BUGS

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

       a) the mailing list
	   <http://libvirt.org/contact.html>

       or,

       b) the bug tracker
	   <http://libvirt.org/bugs.html>

       Alternatively, you may report bugs to your software distributor / vendor.

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 PURPOSE

SEE ALSO

       libvirtd(8),  <http://www.libvirt.org/>

libvirt-1.1.1							    2014-06-17							      VIRTLOCKD(8)