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2013-07-31 15:34:09 -0500 commented question what is the difference between cinder snapshot and clone?

I'm looking for common use cases using snap, clone, and create_v_from_snap. For example, case 1: customer wants to take hourly snaps in case of disaster, but only takes a backup (using create_v_from_snap) from the last snap of the day. case 2: customer wants to mount a copy of yesterdays' 12 noon snapshot read-only.

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2013-07-30 13:42:57 -0500 asked a question what is the difference between cinder snapshot and clone?

What are the differences in behavior between these? I could not find a blueprint or any good description. Also, are there any use case documents? For example is the clone_volume always followed by create_volume_from_clone? (same for snapshot). The reason for asking is that difference ARRAY vendors provide different snapshot alternatives.