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.
