virtlockd(8)

1VIRTLOCKD(8)                Virtualization Support                VIRTLOCKD(8)
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NAME

6       virtlockd - libvirt lock management daemon
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SYNOPSIS

9       virtlockd  [OPTION]...
10

DESCRIPTION

12       The  virtlockd program is a server side daemon component of the libvirt
13       virtualization management system that is  used  to  manage  locks  held
14       against virtual machine resources, such as their disks.
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16       This daemon is not used directly by libvirt client applications, rather
17       it is called on their behalf by libvirtd. By maintaining the locks in a
18       standalone  daemon,  the  main libvirtd daemon can be restarted without
19       risk of  losing  locks.   The  virtlockd  daemon  has  the  ability  to
20       re-exec() itself upon receiving SIGUSR1, to allow live upgrades without
21       downtime.
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23       The virtlockd daemon listens  for  requests  on  a  local  Unix  domain
24       socket.
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OPTIONS

27       -h, --help
28
29       Display command line help usage then exit.
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31       -d, --daemon
32
33       Run as a daemon and write PID file.
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35       -f, --config FILE
36
37       Use this configuration file, overriding the default value.
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39       -t, --timeout SECONDS
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41       Automatically shutdown after SECONDS have elapsed with no active client
42       or lock.
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44       -p, --pid-file FILE
45
46       Use this name for the PID file, overriding the default value.
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48       -v, --verbose
49
50       Enable output of verbose messages.
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52       -V, --version
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54       Display version information then exit.
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SIGNALS

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

62   When run as root
63       • /etc/libvirt/virtlockd.conf
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65       The default configuration file used by virtlockd, unless overridden  on
66       the command line using the -f | --config option.
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68       • /run/libvirt/virtlockd-sock
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70       The sockets virtlockd will use.
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72       • /run/virtlockd.pid
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74       The PID file to use, unless overridden by the -p | --pid-file option.
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76   When run as non-root
77       • $XDG_CONFIG_HOME/libvirt/virtlockd.conf
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79       The  default configuration file used by virtlockd, unless overridden on
80       the command line using the -f | --config option.
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82       • $XDG_RUNTIME_DIR/libvirt/virtlockd-sock
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84       The socket virtlockd will use.
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86       • $XDG_RUNTIME_DIR/libvirt/virtlockd.pid
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88       The PID file to use, unless overridden by the -p | --pid-file option.
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90       If $XDG_CONFIG_HOME is not set in your environment, virtlockd will  use
91       $HOME/.config
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93       If  $XDG_RUNTIME_DIR is not set in your environment, virtlockd will use
94       $HOME/.cache
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EXAMPLES

97       To retrieve the version of virtlockd:
98
99          # virtlockd --version
100          virtlockd (libvirt) 8.6.0
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102       To start virtlockd, instructing it to daemonize and create a PID file:
103
104          # virtlockd -d
105          # ls -la /run/virtlockd.pid
106          -rw-r--r-- 1 root root 6 Jul  9 02:40 /run/virtlockd.pid
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BUGS

109       Please report all bugs you discover.  This should be done via either:
110
111       1. the mailing list
112
113          https://libvirt.org/contact.html
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115       2. the bug tracker
116
117          https://libvirt.org/bugs.html
118
119       Alternatively, you may report bugs to your software distributor /  ven‐
120       dor.
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AUTHORS

123       Please refer to the AUTHORS file distributed with libvirt.
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COPYRIGHT

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

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