1. Are you crazy to do so? The kernel 3.2 is the stable for Ubuntu 12.04.
2. Please provide the complete Ubuntu version number of your kernel so
that we can look for the commits in the Ubuntu Git. Should be
git://kernel.ubuntu.com/ppisati/ubuntu-quantal.git.
There were some nasty bugs in 3.4.0 mainline - I don't know if the fixes
for them are in your kernel.
Cheers,
Sebastian
On 10.07.2012 18:33, Brian Candler wrote:
> An odd one here.
>
> Ubuntu 12.04 system, updated to 3.4.0 kernel from the mainline-ppa. Machine
> has a boot disk plus 12 other disks in a RAID10 far2 array.
>
> System was working fine, but after most recent reboot mdraid failed to
> assemble.
>
> root@dev-storage1:~# cat /proc/mdstat
> Personalities : [linear] [multipath] [raid0] [raid1] [raid6] [raid5] [raid4] [raid10]
> md127 : inactive sdk[9](S) sdl[10](S) sdj[8](S) sdg[5](S) sdc[1](S) sdm[11](S) sdf[4](S) sde[3](S) sdi[7](S) sdd[2](S) sdb[0](S) sdh[6](S)
> 35163186720 blocks super 1.2
>
> unused devices: <none>
>
> dmesg shows periodic "export_rdev" messages:
>
> root@dev-storage1:~# dmesg | grep md:
> [ 953.986401] md: export_rdev(sdo)
> [ 953.988515] md: export_rdev(sdo)
> [ 960.237392] md: export_rdev(sdp)
> [ 960.241928] md: export_rdev(sdp)
> [ 960.965132] md: export_rdev(sdr)
> [ 960.967265] md: export_rdev(sdr)
> [ 1012.573415] md: export_rdev(sdo)
> [ 1012.575650] md: export_rdev(sdo)
> [ 1012.829690] md: export_rdev(sdp)
> [ 1012.831493] md: export_rdev(sdp)
> ...
> [19378.332473] md: export_rdev(sds)
> [19378.333764] md: export_rdev(sds)
> [19417.220171] md: export_rdev(sdr)
> [19417.221748] md: export_rdev(sdr)
> [23739.824227] md: export_rdev(sdr)
> [23739.825554] md: export_rdev(sdr)
> [23740.568940] md: export_rdev(sds)
> [23740.570079] md: export_rdev(sds)
>
> metadata (see below) suggests that some drives think members 1/3/4 are
> missing, but those drives think the array is fine. The "Events" counts are
> different on some members though.
>
> What's the best thing to do here - attempt to force assembly? Any ideas how
> it got into this state?
>
> The machine was rebooted a couple of times but in what should have been a
> clean way, i.e. sudo reboot or sudo halt -p.
>
> Many thanks,
>
> Brian.
>
>
> root@dev-storage1:~# for i in /dev/sd{j..u}; do echo "=== $i ==="; mdadm --examine $i; done
> === /dev/sdj ===
> /dev/sdj:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : e96965d5:bf8986b7:fa83b813:e27aa17f
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : 5673ac95 - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 8
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdk ===
> /dev/sdk:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : f15bb47f:85ca59b1:cad42dec:f8b1b63c
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : 9020674a - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 9
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdl ===
> /dev/sdl:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : e2d82a4c:8409d883:cf2d9b7c:83829aad
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : 30664ccb - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 10
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdm ===
> /dev/sdm:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : e3603570:8e767487:63f3131b:afe358ea
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : 33446897 - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 11
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdn ===
> /dev/sdn:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 549a5230:005cedf8:b37a0d7e:36648ff0
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : ce0a8f46 - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 0
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdo ===
> /dev/sdo:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : b09f3869:09ce8a89:31ed7097:d3621064
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Sat Jul 7 14:02:07 2012
> Checksum : 246eb119 - correct
> Events : 29355
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 2
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdp ===
> /dev/sdp:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : 71494ee2:1504b35a:00a1d927:543db7c6
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Sat Jul 7 14:00:55 2012
> Checksum : 61c11eeb - correct
> Events : 29352
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 3
> Array State : A.AA.AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdq ===
> /dev/sdq:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 17fcd5b8:97fc715f:0877d022:3770d08b
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : fd1699fc - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 7
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdr ===
> /dev/sdr:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : e0565412:a68cf236:9da9a141:e89f935a
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 3 04:21:50 2012
> Checksum : 1ba72ec1 - correct
> Events : 20228
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 1
> Array State : AAAAAAAAAAAA ('A' == active, '.' == missing)
> === /dev/sds ===
> /dev/sds:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : c0f3bbab:70f3e69e:1314cdca:072d5ad9
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 3 06:37:33 2012
> Checksum : 24f36d4c - correct
> Events : 29312
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 5
> Array State : A.AA.AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdt ===
> /dev/sdt:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : clean
> Device UUID : 6b4f9595:4de46aa8:fa695fe8:59b797e7
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 10 10:46:19 2012
> Checksum : 44250f1b - correct
> Events : 29374
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 6
> Array State : A.A..AAAAAAA ('A' == active, '.' == missing)
> === /dev/sdu ===
> /dev/sdu:
> Magic : a92b4efc
> Version : 1.2
> Feature Map : 0x1
> Array UUID : 16b260fd:e49bd157:da886cd0:5394e194
> Name : storage1:storage1
> Creation Time : Thu Jun 7 13:51:21 2012
> Raid Level : raid10
> Raid Devices : 12
>
> Avail Dev Size : 5860531120 (2794.52 GiB 3000.59 GB)
> Array Size : 35163168768 (16767.11 GiB 18003.54 GB)
> Used Dev Size : 5860528128 (2794.52 GiB 3000.59 GB)
> Data Offset : 2048 sectors
> Super Offset : 8 sectors
> State : active
> Device UUID : 46f03854:de80bec8:b44b062c:dd265ba3
>
> Internal Bitmap : 8 sectors from superblock
> Update Time : Tue Jul 3 06:36:18 2012
> Checksum : 22812848 - correct
> Events : 29272
>
> Layout : far=2
> Chunk Size : 1024K
>
> Device Role : Active device 4
> Array State : A.AAAAAAAAAA ('A' == active, '.' == missing)
>
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