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Forum Discussion
Failed XRAID expansion on Pro Pioneer
Hi I have a Pro Pioneer OS 6.4.1RC1 which had 4x4TB in XRAID2 (RAID5) giving a volume of about 10.7TB I just added 2x6TB but only gained 2TB space. I was expecting (given my understanding of...
Hi mdgm,
Thank you. Skywalker has already remote accessed and forced a reshape - I suspect he did the same.
I must say I forget to mention that - I didn't even think about that as the migration was successful. Could that be the cause of the problem??
I've been trying to interperet the mdstat information.
My interpretation is that md127 is the RAID5 array over all 6 disks that didn't properly expand beyond 4. md126 must then be the RAD1 array over the 'extra' 2GB on the 2x6TB discs. So presumably when I add more it would be this array that would change into a RAID5 array and expand - so if this didn't automatically happen would the correct command be # mdadm --grow --raid-devices=3 /dev/md126 (assuming I swapped a 4TB for a 6TB) - or do you need something extra to change RAID1 into 5.
What are md1 and md0??
Many thanks for your expert advice.
Kind regards,
Andy
I don't think the migration would be the cause of that, thoug I guess anything is possible. Sometimes when disks are added the added disks are marked as spare rather than added to the array. This is easy to fix.
It should happen automatically and there are some things to check before going off and forcing the volume to grow.
To force the reshape to grow and to set the new raid-level you could do e.g.
# mdadm --grow --level=5 --raid-devices=3 /dev/md126
md0 is the OS array and md1 is for swap. Both md0 and md1 should use all the disks.
Thanks for clarifying.
What should be checked??
AThat the new partitions are the right size and that the disks are healthy.
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