[gpfsug-discuss] Rebalancing with mmrestripefs -P

[David Johnson]

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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