Re: rbd export with export-format 2 exports all snapshots?

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Thank you Alex for confirmation!

Tony
________________________________________
From: Alex Gorbachev <ag@xxxxxxxxxxxxxxxxxxx>
Sent: August 27, 2023 05:29 PM
To: Tony Liu
Cc: dev@xxxxxxx; ceph-users@xxxxxxx
Subject: Re:  rbd export with export-format 2 exports all snapshots?

Tony,

>From what I recall having worked with snapshots a while ago, you would want export-diff to achieve a differential export.  "export" will always go for a full image.

--
Alex Gorbachev
https://alextelescope.blogspot.com



On Sun, Aug 27, 2023 at 8:03 PM Tony Liu <tonyliu0592@xxxxxxxxxxx<mailto:tonyliu0592@xxxxxxxxxxx>> wrote:
Hi,

Say, source image has snapshot s1, s2 and s3.

I expect "export" behaves the same as "deep cp", when specify a snapshot,
with "--export-format 2", only the specified snapshot and all snapshots
earlier than that will be exported.

What I see is that, no matter which snapshot I specify, "export" with
"--export-format 2" always exports the whole image with all snapshots.
Is this expected?

Could anyone help to clarify?


Thanks!
Tony
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