savevm: Delete existing snapshots in all images
When creating a snapshot we can run into the situation that the first disk doesn't have a snapshot, but the second one does have one with the same name as the new snapshot. In this case, qemu doesn't recognize that there is a snapshot to be overwritten, so it starts to save the new snapshot and errors out later when it tries to snapshot the second image. With this patch, snapshots on secondary images are overwritten just like on the first image. Reported-by: NJuan Quintela <quintela@redhat.com> Signed-off-by: NKevin Wolf <kwolf@redhat.com> Signed-off-by: NAnthony Liguori <aliguori@us.ibm.com>
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