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[libvirt-users] centos6 "system checkpoint"



Hello

###
http://www.redhat.com/archives/libvir-list/2012-July/msg00782.htm 
"it almost sounds like you want the convenience of a
system checkpoint (the ability to revert to a guest with its RAM state
unchanged, which is much faster than booting from just disk state)."
###


I am trying to figure out if it is possible to take a snapshot or "system checkpoint" for a VM running on a centos 6 host. I am able to take a snapshot but unable to revert. Force revert will cause the VM to become unresponsive. Nothing would show in console after revert.


My host OS environment is

CentOS release 6.4 (Final)
libvirt-0.10.2-29
qemu-kvm-0.12.1.2-2.415



virsh # suspend combo01
Domain combo01 suspended
 
virsh # snapshot-create-as --domain combo01 combo01-snap1 "snap1-desc" --atomic
Domain snapshot combo01-snap1 created

virsh # snapshot-list combo01
 Name                 Creation Time             State
------------------------------------------------------------
 combo01-snap1        2013-12-14 20:57:41 +0000 paused

virsh # snapshot-revert combo01 combo01-snap1
error: revert requires force: Target device address type none does not match source pci

virsh # snapshot-revert combo01 combo01-snap1 --force

virsh # list
 Id    Name                           State
----------------------------------------------------
 8     combo01                        paused

virsh # resume combo01
Domain combo01 resumed

virsh # console combo01
Connected to domain combo01
Escape character is ^]

The VM became unresponsive at this point.


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