On 05/21/2013 09:33 AM, Tomoki Sekiyama wrote: > Add VSS requester functions for to qemu-ga. > This provides facility to request VSS service in Windows guest to quisce
s/quisce/quiesce/ > applications and filesystems. This function is only supported in Windows > 2003 or later. In older guests, this function does nothing. > > In several versions of Windows which don't support attribute > VSS_VOLSNAP_ATTR_NO_AUTORECOVERY, DoSnapshotSet fails with error > VSS_E_OBJECT_NOT_FOUND. In this patch, we just ignore this error. > To solve this fundamentally, we need a framework to handle mount writable > snapshot on guests, which is required by VSS auto-recovery feature > (a cleanup phase after snapshot is taken). I take it that such a framework may involve additional guest-agent commands and management work (such as libvirt having to be aware of the added framework). How important is this functionality? How frequently does VSS even get us into that state? That is, are Windows guests going to frequently hit our current first-round implementation limits that fail to let them do auto-recovery? -- Eric Blake eblake redhat com +1-919-301-3266 Libvirt virtualization library http://libvirt.org
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