H Sunsbin,
It seems your question is about kvm and not about CloudStack, is it?
Can you give some context to your question?
Your English is good and your question is otherwise clear,
Daan
On Thu, Nov 7, 2013 at 6:58 AM, Sunsbin <youxiany...@gmail.com> wrote:
> Hello,everyone,
> I'm a coder from Beijing in China,and it is the first time that I ask
> for help here.
> I'm learning cs4.0.2,and I found the "snapshot of volume" feature has 2
> parts:creating snapshot and backupping snapshot.In backupping snapshot
> parts,I'm confused of the "-s $snapshotName" parameter in the command "
> $qemu_img convert -f qcow2 -O qcow2 -s $snapshotname $disk
> $destPath/$destName".
> my testing steps as follows:("test-vm is always running")
> 1、Create a_snapshot on test-vm with the libvirt api
> "domain.snapshotCreateXML().
> 2、Write /a.txt on the test-vm
> 3、“ qemu-img convert -f qcow2 -O qcow2 -s a_snapshot test-vm.disk
> /tmp/testvm_a_ss”
> (test-vm.disk is the source disk of test-vm on the primary storage)
> 4、define a "test-vm-ss" xml in /etc/libvirt/qemu with /tmp/testvm_a_ss
> as its source.
> 5、“virsh define test-vm-ss;virsh start test-vm-ss”
> As my results,and confused, I found the a.txt on the "test-vm-ss" vm.
> Does the "-s a_snapshot" parameter work?
> Thank you very much!I'm sorry for my English ability,but I'm looking
> forward to your help very much.
