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Re: [libvirt] [BUG] qemu: snapshots no longer shown after migration^2

On 04/04/2011 12:08 AM, Philipp Hahn wrote:
> Hello,
> when a domain is migrated to another host and than back again, snapshots of 
> this domain are no longer shown.
> I think that is because qemuDomainSnapshotLoad() is only called once from 
> qemudStartup() during startup, but not after migration (or re-definition of a 
> previously deleted domain, e.g. offline-migration)
> No patch yet, but this is tracked at our German bugzilla at 
> <https://forge.univention.org/bugzilla/show_bug.cgi?id=22072>

Thanks for the report.  I'm wondering whether defining a new domain
should automatically inherit all existing snapshot files that were
already left in the file system, or even if undefining a domain should
fail if snapshots are still present, and/or add a flag to state whether
to discard snapshot files as part of undefining a domain.

It makes me wonder if migration should also be able to (optionally) move
snapshots along with with guest itself.

Certainly plenty of work to do to make snapshot handling saner.

Eric Blake   eblake redhat com    +1-801-349-2682
Libvirt virtualization library http://libvirt.org

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