Hi
last week i tried to grow my raid 5 with 4 disks to a raid 6 with 5
disks. accidentialy i dropped the powersource and the resync process
stopped.
i could start the nas with a rescue stick, but i still wasnt' able to
complete the resync. there are some output from different commands
(examine and assemble tries)
i'm very confused, because there stands active sync, but raid 6 and i
think since it was very at the beginning, there was no data changed on
the 4 raid 5 disks.
what should i do? and is it possible to rebuild this array? luckily i
have somewhere around 90% of the data backed up on another nas.
thank you in advance
Raphael
/dev/sda2:
Magic : a92b4efc
Version : 0.91.00
UUID : aeda8268:b9ac1fcc:244c7d09:ca70a1d5
Creation Time : Wed Mar 9 17:01:18 2011
Raid Level : raid6
Used Dev Size : 1953263488 (1862.78 GiB 2000.14 GB)
Array Size : 5859790464 (5588.33 GiB 6000.43 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 1
Reshape pos'n : 8134656 (7.76 GiB 8.33 GB)
New Layout : left-symmetric
Update Time : Fri Apr 15 19:57:05 2011
State : clean
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
Checksum : 10f62459 - correct
Events : 3481
Layout : left-symmetric-6
Chunk Size : 64K
Number Major Minor RaidDevice State
this 0 8 18 0 active sync /dev/sdb2
0 0 8 18 0 active sync /dev/sdb2
1 1 8 34 1 active sync /dev/sdc2
2 2 8 50 2 active sync /dev/sdd2
3 3 8 66 3 active sync /dev/sde2
4 4 0 0 4 active sync
/dev/sdb2:
Magic : a92b4efc
Version : 0.91.00
UUID : aeda8268:b9ac1fcc:244c7d09:ca70a1d5
Creation Time : Wed Mar 9 17:01:18 2011
Raid Level : raid6
Used Dev Size : 1953263488 (1862.78 GiB 2000.14 GB)
Array Size : 5859790464 (5588.33 GiB 6000.43 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 1
Reshape pos'n : 8134656 (7.76 GiB 8.33 GB)
New Layout : left-symmetric
Update Time : Fri Apr 15 19:57:05 2011
State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
Checksum : 10f6246d - correct
Events : 3481
Layout : left-symmetric-6
Chunk Size : 64K
Number Major Minor RaidDevice State
this 1 8 34 1 active sync /dev/sdc2
0 0 8 18 0 active sync /dev/sdb2
1 1 8 34 1 active sync /dev/sdc2
2 2 8 50 2 active sync /dev/sdd2
3 3 8 66 3 active sync /dev/sde2
4 4 0 0 4 faulty removed
/dev/sdc2:
Magic : a92b4efc
Version : 0.91.00
UUID : aeda8268:b9ac1fcc:244c7d09:ca70a1d5
Creation Time : Wed Mar 9 17:01:18 2011
Raid Level : raid6
Used Dev Size : 1953263488 (1862.78 GiB 2000.14 GB)
Array Size : 5859790464 (5588.33 GiB 6000.43 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 1
Reshape pos'n : 8134656 (7.76 GiB 8.33 GB)
New Layout : left-symmetric
Update Time : Fri Apr 15 19:57:05 2011
State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
Checksum : 10f6247f - correct
Events : 3481
Layout : left-symmetric-6
Chunk Size : 64K
Number Major Minor RaidDevice State
this 2 8 50 2 active sync /dev/sdd2
0 0 8 18 0 active sync /dev/sdb2
1 1 8 34 1 active sync /dev/sdc2
2 2 8 50 2 active sync /dev/sdd2
3 3 8 66 3 active sync /dev/sde2
4 4 0 0 4 faulty removed
/dev/sdd2:
Magic : a92b4efc
Version : 0.91.00
UUID : aeda8268:b9ac1fcc:244c7d09:ca70a1d5
Creation Time : Wed Mar 9 17:01:18 2011
Raid Level : raid6
Used Dev Size : 1953263488 (1862.78 GiB 2000.14 GB)
Array Size : 5859790464 (5588.33 GiB 6000.43 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 1
Reshape pos'n : 8134656 (7.76 GiB 8.33 GB)
New Layout : left-symmetric
Update Time : Fri Apr 15 19:57:05 2011
State : active
Active Devices : 4
Working Devices : 4
Failed Devices : 1
Spare Devices : 0
Checksum : 10f62491 - correct
Events : 3481
Layout : left-symmetric-6
Chunk Size : 64K
Number Major Minor RaidDevice State
this 3 8 66 3 active sync /dev/sde2
0 0 8 18 0 active sync /dev/sdb2
1 1 8 34 1 active sync /dev/sdc2
2 2 8 50 2 active sync /dev/sdd2
3 3 8 66 3 active sync /dev/sde2
4 4 0 0 4 faulty removed
/dev/sde2:
Magic : a92b4efc
Version : 0.91.00
UUID : aeda8268:b9ac1fcc:244c7d09:ca70a1d5
Creation Time : Wed Mar 9 17:01:18 2011
Raid Level : raid6
Used Dev Size : 1953263488 (1862.78 GiB 2000.14 GB)
Array Size : 5859790464 (5588.33 GiB 6000.43 GB)
Raid Devices : 5
Total Devices : 5
Preferred Minor : 1
Reshape pos'n : 8134656 (7.76 GiB 8.33 GB)
New Layout : left-symmetric
Update Time : Fri Apr 15 19:56:49 2011
State : active
Active Devices : 5
Working Devices : 5
Failed Devices : 0
Spare Devices : 0
Checksum : 10f6242d - correct
Events : 3480
Layout : left-symmetric-6
Chunk Size : 64K
Number Major Minor RaidDevice State
this 4 8 2 4 active /dev/sda2
0 0 8 18 0 active sync /dev/sdb2
1 1 8 34 1 active sync /dev/sdc2
2 2 8 50 2 active sync /dev/sdd2
3 3 8 66 3 active sync /dev/sde2
4 4 8 2 4 active /dev/sda2
mdadm: looking for devices for /dev/md1
mdadm: cannot open device /dev/sdg1: Device or resource busy
mdadm: /dev/sdg1 has wrong uuid.
mdadm: cannot open device /dev/sdg: Device or resource busy
mdadm: /dev/sdg has wrong uuid.
mdadm: no recogniseable superblock on /dev/md/0_0
mdadm: /dev/md/0_0 has wrong uuid.
mdadm: cannot open device /dev/sdf1: Device or resource busy
mdadm: /dev/sdf1 has wrong uuid.
mdadm: cannot open device /dev/sdf: Device or resource busy
mdadm: /dev/sdf has wrong uuid.
mdadm: cannot open device /dev/sde1: Device or resource busy
mdadm: /dev/sde1 has wrong uuid.
mdadm: cannot open device /dev/sde: Device or resource busy
mdadm: /dev/sde has wrong uuid.
mdadm: cannot open device /dev/sdd1: Device or resource busy
mdadm: /dev/sdd1 has wrong uuid.
mdadm: cannot open device /dev/sdd: Device or resource busy
mdadm: /dev/sdd has wrong uuid.
mdadm: cannot open device /dev/sdc1: Device or resource busy
mdadm: /dev/sdc1 has wrong uuid.
mdadm: cannot open device /dev/sdc: Device or resource busy
mdadm: /dev/sdc has wrong uuid.
mdadm: cannot open device /dev/sdb1: Device or resource busy
mdadm: /dev/sdb1 has wrong uuid.
mdadm: cannot open device /dev/sdb: Device or resource busy
mdadm: /dev/sdb has wrong uuid.
mdadm: cannot open device /dev/sda1: Device or resource busy
mdadm: /dev/sda1 has wrong uuid.
mdadm: cannot open device /dev/sda: Device or resource busy
mdadm: /dev/sda has wrong uuid.
mdadm: cannot open device /dev/loop0: Device or resource busy
mdadm: /dev/loop0 has wrong uuid.
mdadm: /dev/sde2 is identified as a member of /dev/md1, slot 4.
mdadm: /dev/sdd2 is identified as a member of /dev/md1, slot 3.
mdadm: /dev/sdc2 is identified as a member of /dev/md1, slot 2.
mdadm: /dev/sdb2 is identified as a member of /dev/md1, slot 1.
mdadm: /dev/sda2 is identified as a member of /dev/md1, slot 0.
mdadm:/dev/md1 has an active reshape - checking if critical section needs to be restored
mdadm: Failed to find backup of critical section
mdadm: Failed to restore critical section for reshape, sorry.
Possibly you needed to specify the --backup-file
