Hello all,
I had a three drive raid5 array of 750GB drives. Added a
fourth drive and grew the array but the actual size didn't
change. Now when I do a mdadm --grow --size max /dev/md0,
I get:
mdadm: Cannot set device size/shape for /dev/md0: Device or
resource busy
I tried doing the grow before assembling like:
mdadm --grow --scan --size max /dev/md0
mdadm:option --scan not valid in grow mode
The fourth drive is currently missing due to a failure but
the results were the same even with the drive present.
continuum:~# mdadm --detail /dev/md0
/dev/md0:
Version : 00.91.03
Creation Time : Thu Mar 27 10:44:20 2008
Raid Level : raid5
Array Size : 1464838528 (1396.98 GiB 1499.99 GB)
Used Dev Size : 732419264 (698.49 GiB 750.00 GB)
Raid Devices : 4
Total Devices : 3
Preferred Minor : 0
Persistence : Superblock is persistent
Intent Bitmap : Internal
Update Time : Sun Mar 30 13:05:12 2008
State : active, degraded
Active Devices : 3
Working Devices : 3
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
Delta Devices : 1, (3->4)
UUID : de2cfbb8:431374f2:873bb752:e60eb5cc
Events : 0.197971
Number Major Minor RaidDevice State
0 8 17 0 active sync
/dev/sdb1
1 8 33 1 active sync
//dev/sdc1
2 8 1 2 active sync
/dev/sda1
3 0 0 3 removed
Is there anything I can do to get the array to 2tb or do I
need to recreate with a 1.x superblock format?
S
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