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Change CPG Raid 6 Set Size
Posted: Thu May 09, 2013 11:29 am
by mulloyp
Was wondering if possible can you change the Set Size on a CPG on the fly and if so, how much space is required to make a change like that?
Thank you,
Phil
Re: Change CPG Raid 6 Set Size
Posted: Thu May 09, 2013 4:41 pm
by afidel
Are you saying change from, 6+2 to 14+2? If so I believe it can be done on the fly but it will only affect the allocation of new chunklets, not existing ones. If you want to change existing chunklets you'll need a new CPG, DO, and enough space to copy at least one vvol.
Re: Change CPG Raid 6 Set Size
Posted: Mon Jun 03, 2013 8:14 am
by TinDog
That kinda depends on the code level. At 3.1.2, you can change the CPGs set size and it will re-tune existing volumes as well. So no need to create a new one and 'move' stuff about.
TD