Vladik Romanovsky 0376da0627 libvirt: update guest time after suspend ...

When an instance is resumed from suspension or a migration, the guest's
clock might get a large delay between the current and the suspension time.
In some cases, NTP might not be able to resynchronize the guest time and
will result in a skewed clock.

In order to address the issue, this patch will try to set the guest time
after it is resumed. This operation will require the guest agent to be
configured and running in order to be able to run. However, this operation
will not be disruptive.

This code is similar to a change that has been commited to oVirt.
https://gerrit.ovirt.org/#/c/50426

Closes-Bug: #1593745
Change-Id: I2732af50aab238502ccdc067f62290fd962c8c64

2016-07-20 02:19:59 +10:00

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