Casey Link
2011-Jan-23 08:01 UTC
[libvirt-users] libvirt, snapshots, LVM, and existing VMs
Hello,
I am running libvirt 0.8.3 with a couple VMs using a LVM VG that I had
previously setup on my host. I did not use the storage pool
functionality of libvirt to create the VG in the first place
('pool-list' is empty).
Now I want to be able to take snapshots of the VMs. Having read this
previous post [1] on the mailing list, I gather that libvirt does
indeed support taking snapshots of VMs on an LVM. I suppose I need to
create storage pool that includes the <backingStore> element. However,
I am not sure how to go about creating this pool and making my
existing VMs utilize it.
Is what I am trying to do even possible? If so, what is the proper way
to go about doing it?
Best,
Casey Link
[1] http://www.redhat.com/archives/libvir-list/2009-February/msg00196.html
Osier Yang
2011-Jan-23 11:41 UTC
[libvirt-users] libvirt, snapshots, LVM, and existing VMs
? 2011?01?23? 16:01, Casey Link ??:> Hello, > > I am running libvirt 0.8.3 with a couple VMs using a LVM VG that I had > previously setup on my host. I did not use the storage pool > functionality of libvirt to create the VG in the first place > ('pool-list' is empty). > > Now I want to be able to take snapshots of the VMs. Having read this > previous post [1] on the mailing list, I gather that libvirt does > indeed support taking snapshots of VMs on an LVM. I suppose I need to > create storage pool that includes the<backingStore> element. However, > I am not sure how to go about creating this pool and making my > existing VMs utilize it. > > Is what I am trying to do even possible? If so, what is the proper way > to go about doing it? >How to create the logical pool, refer to: http://libvirt.org/git/?p=libvirt.git;a=tree;f=tests/storagepoolxml2xmlin;h=92d08b31073ade34bc2112694219030130fc5bd1;hb=HEAD How to create the logical volume with backing store, refer to: http://libvirt.org/git/?p=libvirt.git;a=tree;f=tests/storagevolxml2xmlin;h=ed26441f354c5183499eae14b56e280fe36c1da6;hb=HEAD Hope it helps. Regards Osier> Best, > Casey Link > > [1] http://www.redhat.com/archives/libvir-list/2009-February/msg00196.html > > _______________________________________________ > libvirt-users mailing list > libvirt-users at redhat.com > https://www.redhat.com/mailman/listinfo/libvirt-users