Signed-off-by: Jim Fehlig <jfehlig@xxxxxxxx> --- docs/manpages/index.rst | 1 + docs/manpages/libvirt-guests.rst | 151 +++++++++++++++++++++++++++++++ docs/manpages/meson.build | 1 + libvirt.spec.in | 1 + tools/libvirt-guests.service.in | 2 +- 5 files changed, 155 insertions(+), 1 deletion(-) diff --git a/docs/manpages/index.rst b/docs/manpages/index.rst index fb4a36d46a..8fd0d90041 100644 --- a/docs/manpages/index.rst +++ b/docs/manpages/index.rst @@ -41,6 +41,7 @@ Tools * `virt-admin(1) <virt-admin.html>`__ - daemon administration interface * `virsh(1) <virsh.html>`__ - management user interface * `virt-qemu-run(1) <virt-qemu-run.html>`__ - run standalone QEMU instances +* `libvirt-guests(8) <libvirt-guests.html>`__ - suspend/resume running libvirt guests Key codes ========= diff --git a/docs/manpages/libvirt-guests.rst b/docs/manpages/libvirt-guests.rst new file mode 100644 index 0000000000..76045ed11a --- /dev/null +++ b/docs/manpages/libvirt-guests.rst @@ -0,0 +1,151 @@ +============== +libvirt-guests +============== + +------------------------------------- +suspend/resume running libvirt guests +------------------------------------- + +:Manual section: 8 +:Manual group: Virtualization Support + +.. contents:: + +SYNOPSIS +======== + +``libvirt-guests`` *COMMAND* + + +DESCRIPTION +=========== + +``libvirt-guests`` is a service that can be used to coordinate guest and host +lifecyle actions. By default, ``libvirt-guests`` will suspend running guests +when the host shuts down, and restore them to their pre-shutdown state when +the host reboots. + +``libvirt-guests`` is typically under control of systemd. When +``libvirt-guests.service`` is enabled, systemd will call ``libvirt-guests`` +with the ``start`` *COMMAND* when the host boots. Conversely, systemd will call +``libvirt-guests`` with the ``stop`` *COMMAND* when the host shuts down. + +``libvirt-guests`` can be used directly. In addition to the ``start`` and +``stop`` *COMMAND*\s, it also supports ``status``, ``restart``, ``condrestart``, +``try-restart``, ``reload``, ``force-reload``, ``gueststatus``, and +``shutdown`` *COMMAND*\s. + + +FILES +===== + +``libvirt-guests`` defines several variables to control service behavior. +The default vaule of these variables can be overridden in: + +* ``@SYSCONFDIR@/sysconfig/libvirt-guests`` + +The following variables are supported: + +- URIS=default + + URIs to check for running guests. Example: + ``URIS='default xen:///system xen+tcp://host/system lxc:///system'`` + +- ON_BOOT=start + + Action taken on host boot + + * start + + All guests which were running on shutdown are started on boot regardless + of their autostart settings + + * ignore + + ``libvirt-guests`` won't start any guest on boot, however, guests marked + as autostart will still be automatically started by libvirtd + +- START_DELAY=0 + + Number of seconds to wait between each guest start. Set to 0 to allow parallel + startup. + +- ON_SHUTDOWN=suspend + + Action taken on host shutdown + + * suspend + + All running guests are suspended using virsh managedsave + + * shutdown + + All running guests are asked to shutdown. Please be careful with this + settings since there is no way to distinguish between a guest which is + stuck or ignores shutdown requests and a guest which just needs a long + time to shutdown. When setting ON_SHUTDOWN=shutdown, you must also set + SHUTDOWN_TIMEOUT to a value suitable for your guests. + +- PARALLEL_SHUTDOWN=0 + + Number of guests will be shutdown concurrently, taking effect when + "ON_SHUTDOWN" is set to "shutdown". If Set to 0, guests will be shutdown one + after another. Number of guests on shutdown at any time will not exceed number + set in this variable. + +- SHUTDOWN_TIMEOUT=300 + + Number of seconds we're willing to wait for a guest to shut down. If parallel + shutdown is enabled, this timeout applies as a timeout for shutting down all + guests on a single URI defined in the variable URIS. If this is 0, then there + is no time out (use with caution, as guests might not respond to a shutdown + request). The default value is 300 seconds (5 minutes). + +- BYPASS_CACHE=0 + + If non-zero, try to bypass the file system cache when saving and + restoring guests, even though this may give slower operation for + some file systems. + +- SYNC_TIME=0 + + If non-zero, try to sync guest time on domain resume. Be aware, that + this requires guest agent with support for time synchronization + running in the guest. By default, this functionality is turned off. + + +BUGS +==== + +Please report all bugs you discover. This should be done via either: + +#. the mailing list + + `https://libvirt.org/contact.html <https://libvirt.org/contact.html>`_ + +#. the bug tracker + + `https://libvirt.org/bugs.html <https://libvirt.org/bugs.html>`_ + +Alternatively, you may report bugs to your software distributor / vendor. + + +AUTHORS +======= + +Please refer to the AUTHORS file distributed with libvirt. + + +LICENSE +======= + +``libvirt-guests`` 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), `https://libvirt.org/ <https://libvirt.org/>`_ diff --git a/docs/manpages/meson.build b/docs/manpages/meson.build index 6763d19af8..c9b86551b5 100644 --- a/docs/manpages/meson.build +++ b/docs/manpages/meson.build @@ -39,6 +39,7 @@ docs_man_files = [ { 'name': 'virtvboxd', 'section': '8', 'install': conf.has('WITH_VBOX') }, { 'name': 'virtvzd', 'section': '8', 'install': conf.has('WITH_VZ') }, { 'name': 'virtxend', 'section': '8', 'install': conf.has('WITH_LIBXL') }, + { 'name': 'libvirt-guests', 'section': '8', 'install': conf.has('WITH_LIBVIRTD') }, ] foreach name : keycode_list diff --git a/libvirt.spec.in b/libvirt.spec.in index 7a90a1a9e6..b52af707eb 100644 --- a/libvirt.spec.in +++ b/libvirt.spec.in @@ -1694,6 +1694,7 @@ exit 0 %{_mandir}/man1/virt-admin.1* %{_mandir}/man1/virt-host-validate.1* %{_mandir}/man1/virt-ssh-helper.1* +%{_mandir}/man8/libvirt-guests.8* %{_mandir}/man8/libvirtd.8* %{_mandir}/man8/virtlogd.8* %{_mandir}/man8/virtlockd.8* diff --git a/tools/libvirt-guests.service.in b/tools/libvirt-guests.service.in index 10c664016a..1a9b233e11 100644 --- a/tools/libvirt-guests.service.in +++ b/tools/libvirt-guests.service.in @@ -6,7 +6,7 @@ After=network.target After=time-sync.target After=libvirtd.service After=virt-guest-shutdown.target -Documentation=man:libvirtd(8) +Documentation=man:libvirt-guests(8) Documentation=https://libvirt.org [Service] -- 2.34.1
