[gpfsug-discuss] Rebalancing with mmrestripefs -P

[Sobey, Richard A]

I’m coming late to the party on this so forgive me, but I found that even using QoS I could not even snapshot my filesets in a timely fashion, so my rebalancing could only run at weekends with snapshotting disabled.

Richard

From: gpfsug-discuss-bounces at spectrumscale.org <gpfsug-discuss-bounces at spectrumscale.org> On Behalf Of David Johnson
Sent: 20 August 2018 17:55
To: gpfsug main discussion list <gpfsug-discuss at spectrumscale.org>
Subject: [gpfsug-discuss] Rebalancing with mmrestripefs -P

I have one storage pool that was recently doubled, and another pool migrated there using mmapplypolicy.
The new half is only 50% full, and the old half is 94% full.

Disks in storage pool: cit_10tb (Maximum disk size allowed is 516 TB)
d05_george_23          50.49T       23 No       Yes          25.91T ( 51%)        18.93G ( 0%)
d04_george_23          50.49T       23 No       Yes          25.91T ( 51%)         18.9G ( 0%)
d03_george_23          50.49T       23 No       Yes           25.9T ( 51%)        19.12G ( 0%)
d02_george_23          50.49T       23 No       Yes           25.9T ( 51%)        19.03G ( 0%)
d01_george_23          50.49T       23 No       Yes           25.9T ( 51%)        18.92G ( 0%)
d00_george_23          50.49T       23 No       Yes          25.91T ( 51%)        19.05G ( 0%)
d06_cit_33             50.49T       33 No       Yes          3.084T (  6%)        70.35G ( 0%)
d07_cit_33             50.49T       33 No       Yes          3.084T (  6%)         70.2G ( 0%)
d05_cit_33             50.49T       33 No       Yes          3.084T (  6%)        69.93G ( 0%)
d04_cit_33             50.49T       33 No       Yes          3.085T (  6%)        70.11G ( 0%)
d03_cit_33             50.49T       33 No       Yes          3.084T (  6%)        70.08G ( 0%)
d02_cit_33             50.49T       33 No       Yes          3.083T (  6%)         70.3G ( 0%)
d01_cit_33             50.49T       33 No       Yes          3.085T (  6%)        70.25G ( 0%)
d00_cit_33             50.49T       33 No       Yes          3.083T (  6%)        70.28G ( 0%)
                -------------                         -------------------- -------------------
(pool total)           706.9T                                180.1T ( 25%)        675.5G ( 0%)

 Will the command "mmrestripfs /gpfs -b -P cit_10tb”  move the data blocks from the _cit_ NSDs to the _george_ NSDs,
so that they end up all around 75% full?

Thanks,
 — ddj
Dave Johnson
Brown University CCV/CIS
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