Hi guys.
I have a RAID 6 setup with 5 2TB drives on Debian Wheezy [1] & [2].
Yesterday 3 of the drives failed working leaving the RAID setup broken.
Following [5] I managed to start the array and make it resync.
The problem I'm facing now is I cannot access any of the LVM partitions
[3] I have on top of my md0. Fdisk says the disk doesn't contain a valid
partition table [4].
I tried to run fsck on the lvm devices without luck.
Has any of you a suggestion, a method I could use to access my data please?
[1]:
# mdadm -QD /dev/md0
/dev/md0:
Version : 1.2
Creation Time : Sat Sep 24 23:59:02 2011
Raid Level : raid6
Array Size : 5860531200 (5589.04 GiB 6001.18 GB)
Used Dev Size : 1953510400 (1863.01 GiB 2000.39 GB)
Raid Devices : 5
Total Devices : 5
Persistence : Superblock is persistent
Update Time : Sun Sep 25 09:40:20 2011
State : clean, degraded, recovering
Active Devices : 3
Working Devices : 5
Failed Devices : 0
Spare Devices : 2
Layout : left-symmetric
Chunk Size : 512K
Rebuild Status : 63% complete
Name : odin:0 (local to host odin)
UUID : be51de24:ebcc6eef:8fc41158:fc728448
Events : 10314
Number Major Minor RaidDevice State
0 8 65 0 active sync /dev/sde1
1 8 81 1 active sync /dev/sdf1
2 8 97 2 active sync /dev/sdg1
5 8 129 3 spare rebuilding /dev/sdi1
4 0 0 4 removed
6 8 113 - spare /dev/sdh1
[2]:
# cat /proc/mdstat
Personalities : [raid1] [raid6] [raid5] [raid4]
md0 : active raid6 sdh1[6](S) sdi1[5] sdg1[2] sdf1[1] sde1[0]
5860531200 blocks super 1.2 level 6, 512k chunk, algorithm 2
[5/3] [UUU__]
[=======>.............] recovery = 36.8% (720185308/1953510400)
finish=441.4min speed=46564K/sec
[3]:
# lvdisplay
Logging initialised at Sun Sep 25 09:49:11 2011
Set umask from 0022 to 0077
Finding all logical volumes
--- Logical volume ---
LV Name /dev/fridge/storage
VG Name fridge
LV UUID kIhbSq-hePX-UIVv-uuiP-iK6w-djcz-iQ3cEI
LV Write Access read/write
LV Status available
# open 0
LV Size 4.88 TiB
Current LE 1280000
Segments 1
Allocation inherit
Read ahead sectors auto
- currently set to 6144
Block device 253:0
[4]:
# fdisk -l /dev/fridge/storage
Disk /dev/fridge/storage: 5368.7 GB, 5368709120000 bytes
255 heads, 63 sectors/track, 652708 cylinders, total 10485760000 sectors
Units = sectors of 1 * 512 = 512 bytes
Sector size (logical/physical): 512 bytes / 512 bytes
I/O size (minimum/optimal): 524288 bytes / 1572864 bytes
Disk identifier: 0x00000000
Disk /dev/fridge/storage doesn't contain a valid partition table
[5]:
http://en.wikipedia.org/wiki/Mdadm#Recovering_from_a_loss_of_raid_superblock
--
Marcin M. Jessa
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