I had a reshape that hung at 99% - I stupidly stopped it. Now when I try to start it it says that it wants the critical-section-backup, which now contains all zeroes...
I noted that the devices now say "Reshape pos'n : 10240 (10.00 MiB 10.49 MB)" when the mdstat said they were at (1953403392/1953405952) when the array was stopped.
I provided it with the backup-file that I used at the beginning, however as I said it has all zeroes and is of course unable to find anything in it.
I am currently making a mirror of all these devices, I'm thinking perhaps I need to convince it that the reshape position is not what it thinks it is?
Sam
---------------------------
Current State:
# mdadm --assemble --scan --verbose
mdadm: /dev/sdh2 is identified as a member of /dev/md128, slot 5.
mdadm: /dev/sdg2 is identified as a member of /dev/md128, slot 4.
mdadm: /dev/sdf2 is identified as a member of /dev/md128, slot 0.
mdadm: /dev/sde2 is identified as a member of /dev/md128, slot -1.
mdadm: /dev/sdd2 is identified as a member of /dev/md128, slot 2.
mdadm: /dev/sdc2 is identified as a member of /dev/md128, slot -1.
mdadm: /dev/sdb2 is identified as a member of /dev/md128, slot 1.
mdadm: /dev/sda2 is identified as a member of /dev/md128, slot 3.
mdadm:/dev/md128 has an active reshape - checking if critical section needs to be restored
mdadm: No backup metadata on backup.md
mdadm: Failed to find backup of critical section
mdadm: Failed to restore critical section for reshape, sorry.
Details of the device and members below:
# mdadm --detail /dev/md128
/dev/md128:
Version : 1.2
Creation Time : Thu Jul 12 13:44:13 2012
Raid Level : raid6
Array Size : 7813623808 (7451.65 GiB 8001.15 GB)
Used Dev Size : 1953405952 (1862.91 GiB 2000.29 GB)
Raid Devices : 6
Total Devices : 8
Persistence : Superblock is persistent
Update Time : Tue Mar 26 12:38:15 2013
State : clean, reshaping
Active Devices : 6
Working Devices : 8
Failed Devices : 0
Spare Devices : 2
Layout : left-symmetric
Chunk Size : 512K
Reshape Status : 99% complete
Delta Devices : -1, (7->6)
Name : recluce:128 (local to host recluce)
UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Events : 146126
Number Major Minor RaidDevice State
10 8 82 0 active sync /dev/sdf2
12 8 18 1 active sync /dev/sdb2
11 8 50 2 active sync /dev/sdd2
9 8 2 3 active sync /dev/sda2
8 8 98 4 active sync /dev/sdg2
7 8 114 5 active sync /dev/sdh2
13 8 34 - spare /dev/sdc2
14 8 66 - spare /dev/sde2
root@recluce:/mnt/data/www/html# cat /proc/mdstat
Personalities : [raid6] [raid5] [raid4]
md128 : active raid6 sdf2[10] sdc2[13](S) sde2[14](S) sdh2[7] sdg2[8] sda2[9] sdd2[11] sdb2[12]
7813623808 blocks super 1.2 level 6, 512k chunk, algorithm 2 [6/5] [UUUUUU]
[===================>.] reshape = 99.9% (1953403392/1953405952) finish=0.0min speed=101K/sec
unused devices: <none>
/dev/sda2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Data Offset : 22528 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 63be576c:01364cdc:ed7b1b53:0e9d902b
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : 4dab014d - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 3
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sdb2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Data Offset : 22528 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 839eaaeb:d1d895dc:6c9e8e69:dd16f396
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : 4f1d208f - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 1
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sdc2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Data Offset : 22528 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 2ce8913a:96f4ab95:eee626a3:9f5b1a97
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : 90da1742 - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : spare
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sdd2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Data Offset : 22528 sectors
Super Offset : 8 sectors
State : clean
Device UUID : a0a2cc24:e0b17bd1:98d2a7af:c6c53ef6
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : 2289e0cf - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 2
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sde2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Data Offset : 22528 sectors
Super Offset : 8 sectors
State : clean
Device UUID : bb1e1921:f4e66269:988855d3:1a7d2534
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : 1851ff53 - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : spare
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sdf2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Data Offset : 22528 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 624b425a:8a982e6a:5b5c3af3:a99358c4
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : 25ec7e0 - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 0
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sdg2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906813172 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Used Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 1b548d6a:26d2539a:ee7e1bab:eb2cb094
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : cb077b03 - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 4
Array State : AAAAAA. ('A' == active, '.' == missing)
/dev/sdh2:
Magic : a92b4efc
Version : 1.2
Feature Map : 0x4
Array UUID : d4a9284d:11f43bc1:12fdb2d1:0c29bae3
Name : recluce:128
Creation Time : Thu Jul 12 23:44:13 2012
Raid Level : raid6
Raid Devices : 6
Avail Dev Size : 3906813172 (1862.91 GiB 2000.29 GB)
Array Size : 15627247616 (7451.65 GiB 8001.15 GB)
Used Dev Size : 3906811904 (1862.91 GiB 2000.29 GB)
Data Offset : 2048 sectors
Super Offset : 8 sectors
State : clean
Device UUID : 0c9a9967:ac36641f:53c370b9:f68f7ef3
Reshape pos'n : 10240 (10.00 MiB 10.49 MB)
Delta Devices : -1 (7->6)
Update Time : Tue Mar 26 22:57:28 2013
Checksum : ba47d0e1 - correct
Events : 146349
Layout : left-symmetric
Chunk Size : 512K
Device Role : Active device 5
Array State : AAAAAA. ('A' == active, '.' == missing)--
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