Reuben D. Budiardja wrote:
Hello,
I have a machine running software RAID5 using:
/dev/hde1
/dev/hdg1
/dev/hdi1
as the RAID partitions. The operating system for the machine is on separate
drive /dev/hda.
After a power failure, RAID failed to start. During boot, it gives me the
following message:
---
Starting up RAID devices : raid5 : failed to run raid set md0
Checking filesystems
/boot : clean, ...
fsck.ext3 : /dev/md0 :
The superblock could not be read or does not describe a correct ext2
filesystem. If the device is valid and it really contains an ext2 filesystem
(and not swap or ufs or something else), then the superblock is corrupt, and
you might try running e2fsck with an alternate superblock :
e2fsck -b 8193 <device>
Invalid argument while trying to open /dev/md0 [Failed]
---
Then it asks for root password for maintenance. After inputting root password,
I tried running:
#> e2fsck -b 8193 /dev/md0
and I got the same message about corrupt superblock. Running
"raidstart /dev/md0" in maintenance mode also give a message that the raid
fail to start. Does this mean I loose all my data in the array ? Any hope of
recovering some ?
I attach my /etc/raidtab bellow. Any help is greatly appreciated.
Thanks
Reuben D. Budiardja
------------ /etc/raidtab------------
raiddev /dev/md0
raid-level 5
nr-raid-disks 3
chunk-size 64k
persistent-superblock 1
nr-spare-disks 0
device /dev/hde1
raid-disk 0
device /dev/hdg1
raid-disk 1
device /dev/hdi1
raid-disk 2
What output do you get from:
# mdadm --detail /dev/md0
Paul.
