--- Begin Message --->> >>has_features->{snapshot}->{raw} = 1 : it's always a storage snapshot >>(assuming we don't want to implement external qcow2 snapshot with raw >>backing) >> >>has_features->{snapshot}->{qcow2|other_format_than_raw)} = 1 : qemu >>internal snapshot >>has_features->{snapshot}->{qcow2} = 2 : qemu external snapshotah sorry, I speak too fast, rbd is raw, but use qemu internal feature snapshot to take snasphot, but don't pass the option in qemu-img convert. maybe for convert, we need to keep the check for qcow2 format (as it's the only format working with "-l snapshot.name" option anyway) + if the snapshot is external|internal I need to think a little bit more about this
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