On 12/17/2012 02:58 AM, Dietmar Maurer wrote: >>>>> Seems this makes it impossible to use external commands to make >>>> snapshots? >>>>> >>>> what command? can you tip more about the case? >>> >>> For example, nexenta storage provides an API to create snapshots. We >>> want to use that. Another example would be to use lvcreate to create lvm >> snapshots. >>> >> I am not familar with those tools, Patch 5 and 6 provides hmp and qmp API, >> hope you can enlight more what is missing if it can't work with external >> tool. > > We need the ability to create snapshots with external tools - your patch does > not support that. > I think that is a major drawback.
I think the ability to create snapshots with external tools is going to require asynchronous snapshots, where the work is divided into several phases. You'll need qemu to prepare for the snapshot, then the external tools to create the snapshot, then resume qemu with possibly different file names as a result of the snapshot being created. I'm certainly interested in seeing what you come up with, and how libvirt will be able to interact with it for external tool snapshots. -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
signature.asc
Description: OpenPGP digital signature
