On Oct 15, 2013, at 4:30 PM, Josh Stone <jistone@xxxxxxxxxx> wrote: > On 10/15/2013 02:46 PM, Richard W.M. Jones wrote: >> On Tue, Oct 15, 2013 at 03:29:38PM -0600, Chris Murphy wrote: >>> The better snapshots sound ideal for VM testing. Snapshot a >>> successful install and then try to break the snapshot. Etc. >>> >>> Presently virt-manager ignores thinp pools and only creates >>> conventional LV's. I haven't tried using virsh to force it to use an >>> already created virtualsize LV as backing, but I'm wondering if it >>> should work. If not, is there a rough time frame on such support? > > FWIW, I have tried, and my VMs with thin LV storage are working fine, > even though the libvirt storage pool barfs on the VG. (bz924672) So you're using virsh to compel it to use the LV I take it? > >> Is using LVs for this over-thinking things? > > One nice aspect with thin LVM snapshots is you don't need to worry about > preserving the chain of origin. There's no backing file except the main > thinpool itself. One can snapshot to arbitrary depths, and delete old > images anywhere, freeing the unique blocks but keeping whatever is still > shared. Yes, this is like btrfs snapshots. It doesn't matter whether the original or snapshot subvolume is destroyed, whichever subvolume remains is equally usable. Chris Murphy -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx https://admin.fedoraproject.org/mailman/listinfo/devel Fedora Code of Conduct: http://fedoraproject.org/code-of-conduct
