I've been handed the task of expanding some RAID 6 arrays while our usual admin guy is on leave. I've never done this before so I'm not really sure what I'm doing. I see that I should be using omconfig to do this but I'm having trouble finding any informative documentation that can help a novice such as myself.
The situation is the servers have the one controller with 8 disks in each at the moment. Two of the disks are used in a RAID-1 array and the remaining 6 disks are used in the RAID-6 array. We will be adding another disk to the RAID-6 array and expanding. The disks used in this array at the moment are 0:1:2 through to 0:1:7. The disks are all 558GB giving me a total vdisk size of 2233GB. Assuming that the newly added disk takes on the id of 0:1:8, I'm thinking that the command I'll want to issue will go something like this:-
omconfig storage vdisk controller=0 pdisk=0:1:2,0:1:3,0:1:4,0:1:5,0:1:6,0:1:7,0:1:8 vdisk=1 raid=r6 vdcapacityexpansion=yes size=max action=reconfigure
Does that look right? I'm not too sure about the pdisk option as to whether I should be specifying all disks that make up the array or just the newly added disk (0:1:8).
Unfortunately, I don't have the luxury of being able to test this out on a non-live server, and these servers are kinda critical so I can't afford to stuff it up. Oh, and I can't wait for the guy in the know to come back as we'll be out of space before then.
Thanks in advance.