Bug 60833

Summary:	Window guest time passed very quickly, when restore vm that saved 10 minutes ago.
Product:	Virtualization	Reporter:	yongdu (ydu)
Component:	kvm	Assignee:	virtualization_kvm
Status:	CLOSED INVALID
Severity:	normal	CC:	alan, gleb, ydu
Priority:	P1
Hardware:	x86-64
OS:	Linux
Kernel Version:	qemu-kvm-0.12.1.2-2.355.el6.x86_64	Subsystem:
Regression:	No	Bisected commit-id:

Description yongdu 2013-09-02 09:15:40 UTC

Recently, I found a problem with windows guest(both winxp and win7) that window guest time passed very quickly, when restore vm that saved 1 hours ago.

Kvm server OS: Red Hat Enterprise Linux Server release 6.4

Reproduce Steps:
1. install a new windows xp vm named winxp.
2. power on the vm.
3. save the vm by command "virsh save winxp /tmp/winxp.save"
4. wait 10 minutes.
5. restore the vm by command "virsh restore /tmp/winxp.save"
6. Note the clock on the task bar, time passed as 10 time quickly as real time speed.

Comment 1 Gleb 2013-09-02 09:21:11 UTC

This is how it suppose to work. If you do not want this behaviour change
time catchup policy in libvirt.

BTW this bugzilla is for upstream issues, not vendor kernels.