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libvirt/tools/libvirt-guests.sysconf
Kevin Locke 4ac265173c libvirt-guests: Remove obsolete Windows comment
The comment that

> For instance, qemu-ga doesn't support guest time synchronization on
> Windows guests, but Linux ones.

Was correct at the time, but has since been addressed by
qemu/qemu@105fad6bb2, which added support for set-time without a time
argument, as used by `virsh domtime --sync` by libvirt-guests.sh.  I can
confirm that `virsh domtime --sync` works correctly on a Windows 10
guest, as does `SYNC_TIME=1`.  (Note that there can be a significant
delay between when the command completes and when the guest time
finishes synchronizing due to QEMU GA calling `w32tm` with `/nowait`,
which complicates testing.)

Signed-off-by: Kevin Locke <kevin@kevinlocke.name>
2020-12-07 10:38:44 +00:00

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# Customizations for the libvirt-guests.service systemd unit
# URIs to check for running guests
# example: URIS='default xen:///system vbox+tcp://host/system lxc:///system'
#URIS=default
# action taken on host boot
# - start all guests which were running on shutdown are started on boot
# regardless on their autostart settings
# - ignore libvirt-guests init script won't start any guest on boot, however,
# guests marked as autostart will still be automatically started by
# libvirtd
#ON_BOOT=start
# Number of seconds to wait between each guest start. Set to 0 to allow
# parallel startup.
#START_DELAY=0
# 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.
#ON_SHUTDOWN=suspend
# 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.
#PARALLEL_SHUTDOWN=0
# 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).
#SHUTDOWN_TIMEOUT=300
# 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.
#BYPASS_CACHE=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.
#SYNC_TIME=1