CephFS: Revert snapshot

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Hi all,

in CephFS, creating and removing a snapshot is as easy as

	- mkdir .snap/SNAPSHOT_NAME
	- rmdir .snap/SNAPSHOT_NAME

Both steps are completed in no time, because no data has to be moved around.

However, what I cannot find is a way to revert to a snapshot. The only way I see is to

	rsync … .snap/SNAPSHOT_NAME/ .

In this case all the data has to be moved around, with two main disadvantages:

	- takes forever
	- consumes double the space than before

Is there a better way to do this?

Cheers
--
Andre Tann
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