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[Qemu-devel] Clock skew after pausing guests

From: Virtbie
Subject: [Qemu-devel] Clock skew after pausing guests
Date: Thu, 17 Mar 2011 15:24:31 +0100
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv: Gecko/20101208 Thunderbird/3.1.7

Hello all
I am seeing, perhaps unsurprisingly, a skewed system clock after pausing
and then resuming a qemu-kvm guest. The guest continues with its earlier
Since I'd like to use the pause technique for backups, which can take 1
hour, this is significant.

This is with windows guests, and it doesn't seem to recover by itself
just by waiting.

Linux guests instead seem to adjust their clock correctly after the resume.

Is there any way to tell the windows guests to resynchronize its clock
with the host?
I am using virsh / libvirt.

Thank you

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