[gpfsug-discuss] Replication settings when running mmapplypolicy
Marc A Kaplan
makaplan at us.ibm.com
Fri Jun 23 20:28:28 BST 2017
Sorry for any confusion. MIGRATing a file does NOT change the replication
factor, unless you explicitly use the keyword REPLICATE.
The default replication factor, as set/displayed by mm[ch|ls]fs -r only
applies at file creation time, unless overriden by a policy SET POOL ...
REPLICATE(x) rule.
From: Stephen Ulmer <ulmer at ulmer.org>
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Date: 06/23/2017 01:55 PM
Subject: Re: [gpfsug-discuss] Replication settings when running
mmapplypolicy
Sent by: gpfsug-discuss-bounces at spectrumscale.org
On Jun 23, 2017, at 12:58 PM, Marc A Kaplan <makaplan at us.ibm.com> wrote:
I believe that is correct. If not, let us know!
To recap... when running mmapplypolicy with rules like:
... MIGRATE ... REPLICATE(x) ...
will change the replication factor to x, for each file selected by this
rule and chosen for execution.
... MIGRATE ... /* no REPLICATE keyword */
will not mess with the replication factor
I think I detect an impedance mismatch...
By "not mess with the replication factor" do you mean that after the move:
the file will have the default replication factor for the file system
the file will retain a replication factor previously set on the file
You told Kevin that he was correct and I think he meant the first one, but
I read what you said as the second one.
Liberty,
--
Stephen
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