[gpfsug-discuss] Pool migration and replicate

Marc A Kaplan makaplan at us.ibm.com
Thu Apr 26 21:30:14 BST 2018


No need to specify REPLICATE(1), but no harm either.
No need to specify a FROM POOL, unless you want to restrict the set of 
files considered. (consider a system with more than two pools...)
If a file is already in the target (TO) POOL, then no harm, we just skip 
over that file.



From:   "Simon Thompson (IT Research Support)" <S.J.Thompson at bham.ac.uk>
To:     gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date:   04/26/2018 02:09 PM
Subject:        [gpfsug-discuss] Pool migration and replicate
Sent by:        gpfsug-discuss-bounces at spectrumscale.org



Hi all,

We'd like to move some data from a non replicated pool to another pool, 
but keep replication at 1 (the fs default is 2).

When using an ILM policy, is the default to keep the current replication 
or use the fs default?

I.e.just wondering if I need to include a "REPLICATE(1)" clause.

Also if the data is already migrated to the pool, is it still considered 
by the policy engine, or should I include FROM POOL...?

I.e. just wondering what is the most efficient way to target the files.

Thanks

Simon
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