QEMU Windows Guest suspend and time issues

[Ben.Hahlen]

Not sure if this is the entirely correct forum, if not, please move this post.

I have been using Fedora for quite some time, and have always used VirtualBox as my go-to virtualization program. Because of reasons (outlined on my blog, won't bother you here), I decided to try out QEMU/KVM/lbvirt (or whatever the official name, I am not sure, but will refer to qemu from now on).

While I am pretty happy about using it, but still not totally convinced, there is an issue that keeps bothering me, that I can's seem to find the solution for.
Whenever I suspend my laptop (closing the lid), and then wake it again, the time in my VM will be stuck at the time which it was when I suspended the laptop.
I have tried numerous things, including editing /etc/libvirt/qemu/VM.xml as follows:

<clock offset='localtime'>
  <timer name='hypervclock' present='yes'/>
</clock>

Of course, this did not work.
I had the "catchup" thing in there as well, but that is not really a solution, because the time it needs to catch up after being suspended for 8 hours is longer than it would take me to reboot the VM.

I also tried installing the Guest Agent, but that also did not solve the issue.

Another thing I tried is to make a script that would supsend the VM BEFORE suspending the laptop, figuring it might help:

#!/bin/bash
#/usr/lib/systemd/system-sleep/suspend-resume-vms.sh
PS_VM=/var/log/paused_vms
SR_LOG=/var/log/sleep-resume.log

is_there_virsh () {
if [[ -z `which virsh` ]]
then echo "no actions for suspend or resume required" >> $SR_LOG
exit 0
fi
}
case $1/$2 in
    pre/*)
        echo "" >> $SR_LOG
  echo "`/bin/date +%Y%m%d-%H%M%S` - Going to state [$2]" >> $SR_LOG
        is_there_virsh
  echo "Suspending running VMs" >> $SR_LOG
        for i in $(virsh list --state-running | grep running | awk {'print $2'})
        do echo $i > $PS_VM
     echo $i >> $SR_LOG
           virsh suspend $i
           echo "`/bin/date +%Y%m%d-%H%M%S` - Done suspending VMs" >> $SR_LOG
        done
        ;;
    post/*)
  echo "`/bin/date +%Y%m%d-%H%M%S` - Waking up from state [$2]" >> $SR_LOG
        is_there_virsh
        echo "Resuming suspended VMs" >> $SR_LOG
        for i in $(cat $PS_VM)
        do echo $i >> $SR_LOG
     virsh resume $i
     rm $PS_VM
           echo "`/bin/date +%Y%m%d-%H%M%S` - Done resuming VMs" >> $SR_LOG
 
        done
        ;;
esac

This didn't work either...

So now I am turning to you, because I can't figure out how to solve this issue.
Any pointers in the right direction?

[Skull One]

Please look at the bug report https://bugzilla.redhat.com/show_bug.cgi?id=1102411
You will need the guest agent & to use the virsh domtime command after the resume (see comment 23).

[Ben.Hahlen]

Please look at the bug report https://bugzilla.redhat.com/show_bug.cgi?id=1102411
You will need the guest agent & to use the virsh domtime command after the resume (see comment 23).

Cool, trying that out now.
Is there also a "suggested" block that I should use for:

  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
  </clock>

in the VM.xml?

[Skull One]

Cool, trying that out now.
Is there also a "suggested" block that I should use for:

  <clock offset='localtime'>
    <timer name='rtc' tickpolicy='catchup'/>
    <timer name='pit' tickpolicy='delay'/>
    <timer name='hpet' present='no'/>
  </clock>

in the VM.xml?

I don't know. Try the domtime command without it to check.

[Ben.Hahlen]

I don't know. Try the domtime command without it to check.

I just left it like this, and it works as expected now
Thanks for the help!

Marking as solved!