[Qemu-devel] Clock skew after pausing guests

[Virtbie <virtbie@shiftmail.org>]

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
time.
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