virtnodedevd(8)

1VIRTNODEDEVD(8)             Virtualization Support             VIRTNODEDEVD(8)
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NAME

6       virtnodedevd - libvirt host device management daemon
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SYNOPSIS

9       virtnodedevd [OPTION]...
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DESCRIPTION

12       The  virtnodedevd program is a server side daemon component of the lib‐
13       virt virtualization management system.
14
15       It is one of a collection of modular daemons that replace functionality
16       previously provided by the monolithic libvirtd daemon.
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18       This daemon runs on virtualization hosts to provide management for host
19       devices.
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21       The virtnodedevd daemon only listens for requests on a local  Unix  do‐
22       main  socket.  Remote  off-host access and backwards compatibility with
23       legacy clients expecting libvirtd is provided by the virtproxy daemon.
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25       Restarting virtnodedevd does not interrupt running guests. Guests  con‐
26       tinue to operate and changes in their state will generally be picked up
27       automatically during startup. None the less it is recommended to  avoid
28       restarting with running guests whenever practical.
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SYSTEM SOCKET ACTIVATION

31       The virtnodedevd daemon is capable of starting in two modes.
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33       In  the traditional mode, it will create and listen on UNIX sockets it‐
34       self.
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36       In socket activation mode, it will rely on systemd to create and listen
37       on  the  UNIX  sockets and pass them as pre-opened file descriptors. In
38       this mode most of  the  socket  related  config  options  in  /etc/lib‐
39       virt/virtnodedevd.conf will no longer have any effect.
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41       Socket  activation mode is generally the default when running on a host
42       OS that uses systemd. To revert to the traditional mode, all the socket
43       unit files must be masked:
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45          $ systemctl mask virtnodedevd.socket virtnodedevd-ro.socket \
46             virtnodedevd-admin.socket
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OPTIONS

49       -h, --help
50
51       Display command line help usage then exit.
52
53       -d, --daemon
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55       Run as a daemon & write PID file.
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57       -f, --config *FILE*
58
59       Use this configuration file, overriding the default value.
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61       -p, --pid-file *FILE*
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63       Use this name for the PID file, overriding the default value.
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65       -t, --timeout *SECONDS*
66
67       Exit  after timeout period (in seconds), provided there are neither any
68       client connections nor any running domains.
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70       -v, --verbose
71
72       Enable output of verbose messages.
73
74       --version
75
76       Display version information then exit.
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SIGNALS

79       On receipt of SIGHUP virtnodedevd will reload its configuration.
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FILES

82   When run as root
83       • /etc/libvirt/virtnodedevd.conf
84
85       The default configuration file used by virtnodedevd, unless  overridden
86       on the command line using the -f | --config option.
87
88       • /run/libvirt/virtnodedevd-sock
89
90       • /run/libvirt/virtnodedevd-sock-ro
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92       • /run/libvirt/virtnodedevd-admin-sock
93
94       The sockets virtnodedevd will use.
95
96       The TLS Server private key virtnodedevd will use.
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98       • /run/virtnodedevd.pid
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100       The PID file to use, unless overridden by the -p | --pid-file option.
101
102   When run as non-root
103       • $XDG_CONFIG_HOME/libvirt/virtnodedevd.conf
104
105       The  default configuration file used by virtnodedevd, unless overridden
106       on the command line using the -f``|--config`` option.
107
108       • $XDG_RUNTIME_DIR/libvirt/virtnodedevd-sock
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110       • $XDG_RUNTIME_DIR/libvirt/virtnodedevd-admin-sock
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112       The sockets virtnodedevd will use.
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114       • $XDG_RUNTIME_DIR/libvirt/virtnodedevd.pid
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116       The PID file to use, unless overridden by the -p``|--pid-file`` option.
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118       If $XDG_CONFIG_HOME is not set in your environment,  virtnodedevd  will
119       use $HOME/.config
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121       If  $XDG_RUNTIME_DIR  is not set in your environment, virtnodedevd will
122       use $HOME/.cache
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EXAMPLES

125       To retrieve the version of virtnodedevd:
126
127          # virtnodedevd --version
128          virtnodedevd (libvirt) 8.1.0
129
130       To start virtnodedevd, instructing it to daemonize  and  create  a  PID
131       file:
132
133          # virtnodedevd -d
134          # ls -la /run/virtnodedevd.pid
135          -rw-r--r-- 1 root root 6 Jul  9 02:40 /run/virtnodedevd.pid
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BUGS

138       Please report all bugs you discover.  This should be done via either:
139
140       1. the mailing list
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142          https://libvirt.org/contact.html
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144       2. the bug tracker
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146          https://libvirt.org/bugs.html
147
148       Alternatively,  you may report bugs to your software distributor / ven‐
149       dor.
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AUTHORS

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

155       Copyright (C) 2006-2020 Red Hat, Inc., and the authors  listed  in  the
156       libvirt AUTHORS file.
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LICENSE

159       virtnodedevd  is  distributed  under  the  terms of the GNU LGPL v2.1+.
160       This is free software; see the source for copying conditions. There  is
161       NO  warranty;  not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR
162       PURPOSE
163