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?
Is using LVs for this over-thinking things?
Creating a snapshot of a regular file which efficiently shares the
backing disk is easy, and doesn't require root or special support:
qemu-img create -f qcow2 -b original snapshot.qcow2
Then you can import this as a new guest in libvirt, again *without*
needing root:
virt-install --import --name snapshot \
--ram 1024 --disk path=snapshot.qcow2,format=qcow2
And in Fedora 20 we'll have virt-builder, which makes creating the
original images quick too. (Not to mention virt-sysprep and all the
other tools to manipulate disk images easily, without root)
Rich.
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