Hello,
I have 8x250gig hard drives in a RAID5 configuration. What I'm trying
to do is add more storage to the raid by replacing the 250's with
larger disks one-by-one over time. I just replaced the first disk
with a 750, and the raid resync'd, but now I'm unable to grow it to
the additional space. The raid is just using the first 250 gigs and
nothing more on the drive. The command I issued in attempt to grow
it was 'mdadm --grow /dev/md0 -z max', but nothing happens. Is what
I'm trying to do possible? I'm running kernel 2.6.21 w/ raid5 expansion
enabled.
Thanks,
Christian
SCSI device sda: 1465149168 512-byte hdwr sectors (750156 MB)
SCSI device sdb: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sdc: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sdd: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sde: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sdf: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sdg: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sdh: 488397168 512-byte hdwr sectors (250059 MB)
SCSI device sdi: 488397168 512-byte hdwr sectors (250059 MB)
Personalities : [raid6] [raid5] [raid4]
md0 : active raid5 sda[0] sdb[1] sdh[7] sdg[6] sdf[5] sde[4] sdd[3] sdc[2]
1709389248 blocks level 5, 64k chunk, algorithm 2 [8/8] [UUUUUUUU]
/dev/md0:
Version : 00.90.03
Creation Time : Fri May 18 01:49:46 2007
Raid Level : raid5
Array Size : 1709389248 (1630.20 GiB 1750.41 GB)
Used Dev Size : 244198464 (232.89 GiB 250.06 GB)
Raid Devices : 8
Total Devices : 8
Preferred Minor : 0
Persistence : Superblock is persistent
Update Time : Mon May 21 13:27:34 2007
State : clean
Active Devices : 8
Working Devices : 8
Failed Devices : 0
Spare Devices : 0
Layout : left-symmetric
Chunk Size : 64K
UUID : 905a278f:a088d952:fab6e626:2309d439
Events : 0.94
Number Major Minor RaidDevice State
0 8 0 0 active sync /dev/sda
1 8 16 1 active sync /dev/sdb
2 8 32 2 active sync /dev/sdc
3 8 48 3 active sync /dev/sdd
4 8 64 4 active sync /dev/sde
5 8 80 5 active sync /dev/sdf
6 8 96 6 active sync /dev/sdg
7 8 112 7 active sync /dev/sdh
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