On Sat, 03 Mar 2012 12:55:44 -0600 Larkin Lowrey <llowrey@xxxxxxxxxxxxxxxxx>
wrote:
> I am trying to replace the two small drives in my raid1 mirror with two
> larger drives. I failed and removed the first drive and am now trying to
> add a new larger drive to take its place. The add command completes
> without any obvious error but the new dive is not added to the array.
> What am I missing?
>
> A superblock is written on the new array partition but its role is
> 'spare' and it does not show up in /proc/mdstat.
>
> Kernel 3.2.7-1.fc16.x86_64
> mdadm - v3.2.3 - 23rd December 2011
>
> It appears that mdadm does detect an error but doesn't say anything
> about it:
>
> # mdadm --manage /dev/md0 --add /dev/sdz2 ; echo $?
> 1
Strange.
Does adding "--verbose" produce more messages?
Maybe run mdadm under 'strace' and see exactly what is failing.
NeilBrown
>
> I do see the following in the logs:
>
> [ 2913.075120] scsi_verify_blk_ioctl: 74 callbacks suppressed
> [ 2913.080708] mdadm: sending ioctl 1261 to a partition!
> ...
> [ 2913.137556] mdadm: sending ioctl 1261 to a partition!
>
> # mdadm -D /dev/md0
> /dev/md0:
> Version : 1.2
> Creation Time : Tue Jan 10 20:28:20 2006
> Raid Level : raid1
> Array Size : 15634360 (14.91 GiB 16.01 GB)
> Used Dev Size : 15634360 (14.91 GiB 16.01 GB)
> Raid Devices : 2
> Total Devices : 1
> Persistence : Superblock is persistent
>
> Intent Bitmap : Internal
>
> Update Time : Sat Mar 3 12:43:41 2012
> State : active, degraded
> Active Devices : 1
> Working Devices : 1
> Failed Devices : 0
> Spare Devices : 0
>
> Name : ***.*****.***:0 (local to host ***.*****.***)
> UUID : b5d9fcd0:5baaaff8:492c3e4b:22636aac
> Events : 499
>
> Number Major Minor RaidDevice State
> 0 0 0 0 removed
> 1 8 130 1 active sync /dev/sdi2
>
> # mdadm -E /dev/sdz2
> /dev/sdz2:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : b5d9fcd0:5baaaff8:492c3e4b:22636aac
> Name : ***.*****.***:0 (local to host ***.*****.***)
> Creation Time : Tue Jan 10 20:28:20 2006
> Raid Level : raid1
> Raid Devices : 2
>
> Avail Dev Size : 83884032 (40.00 GiB 42.95 GB)
> Array Size : 31268720 (14.91 GiB 16.01 GB)
> Used Dev Size : 31268720 (14.91 GiB 16.01 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 50670e17:d3e5fe82:e572e701:7460bcc4
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Sat Mar 3 12:41:18 2012
> Checksum : 4bb687db - correct
> Events : 0
>
>
> Device Role : spare
> Array State : .A ('A' == active, '.' == missing)
>
> ]# cat /proc/mdstat
> Personalities : [raid1] [raid6] [raid5] [raid4]
> md2 : active raid5 sdv2[9] sdo2[1] sdx2[4] sdl2[5] sdw2[10] sdp2[2]
> sdk2[6] sdm2[8] sdq2[3] sdn2[7] sdr2[0]
> 6641912320 blocks level 5, 128k chunk, algorithm 2 [11/11]
> [UUUUUUUUUUU]
>
> md1 : active raid5 sdx1[6] sdb1[9] sdp1[7] sdl1[11] sdr1[4] sdg1[3]
> sdk1[10] sdq1[8] sdh1[0] sdv1[13] sdm1[14] sdw1[12] sdn1[2] sdf1[1] sdo1[5]
> 4375960064 blocks level 5, 64k chunk, algorithm 2 [15/15]
> [UUUUUUUUUUUUUUU]
>
> md0 : active raid1 sdi2[1]
> 15634360 blocks super 1.2 [2/1] [_U]
> bitmap: 1/1 pages [4KB], 65536KB chunk
>
> unused devices: <none>
>
> --Larkin
> --
> To unsubscribe from this list: send the line "unsubscribe linux-raid" in
> the body of a message to majordomo@xxxxxxxxxxxxxxx
> More majordomo info at http://vger.kernel.org/majordomo-info.html
Attachment:
signature.asc
Description: PGP signature
