Robert LeBlanc <rob...@leblancnet.us> writes:

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> At first I thought this was to allow the OSDs to stub the location of
> the real data after a CRUSH map change so that it didn't have to
> relocate the data right away (or at all) and reduce the  number of map
> changes. Then I realized it was for cold storage tiering. Is the idea
> to be able to move data off to near-line storage like tape?

Yes, cold storage. Basically, let the OSD move data elsewhere like tape or some
archive system.

~marcel
--
Marcel Lauhoff
Mail/XMPP: m...@irq0.org
http://irq0.org
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