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Old 12-18-2007, 04:36 AM   #1
shan_nathan
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Registered: Jun 2007
Location: India
Distribution: Redhat
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Raid Problem


Hi all,

I am using suse 10.1 and i installed suse in two 80 GB sata hard disk (sda, sdb) under RAID 1 software mirroring. In one machine one hard disk was failed and from another hard disk it was not booting. I foung that
it's searching for mbr. I booted the system with suse dvd in the rescue method and i am trying to mount the available sdb partitation but its said could not mount the "Linux raid autodetect"

So i am trying to mount /dev/md0 But its giving some superblock error

Can some one tell me how to solve the problem.

This is my org. "fdisk -l" output.

suse:~ # fdisk -l

Disk /dev/sda: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sda1 * 1 13 104391 fd Linux raid autodetect
/dev/sda2 14 275 2104515 fd Linux raid autodetect
/dev/sda3 276 1581 10490445 fd Linux raid autodetect
/dev/sda4 1582 9729 65448810 f W95 Ext'd (LBA)
/dev/sda5 1582 4192 20972826 fd Linux raid autodetect
/dev/sda6 4193 6803 20972826 fd Linux raid autodetect
/dev/sda7 6804 9729 23503063+ fd Linux raid autodetect

Disk /dev/sdb: 80.0 GB, 80026361856 bytes
255 heads, 63 sectors/track, 9729 cylinders
Units = cylinders of 16065 * 512 = 8225280 bytes

Device Boot Start End Blocks Id System
/dev/sdb1 1 13 104391 fd Linux raid autodetect
/dev/sdb2 14 275 2104515 fd Linux raid autodetect
/dev/sdb3 276 1581 10490445 fd Linux raid autodetect
/dev/sdb4 1582 9729 65448810 f W95 Ext'd (LBA)
/dev/sdb5 1582 4192 20972826 fd Linux raid autodetect
/dev/sdb6 4193 6803 20972826 fd Linux raid autodetect
/dev/sdb7 6804 9729 23503063+ fd Linux raid autodetect

Disk /dev/md1: 2154 MB, 2154954752 bytes
2 heads, 4 sectors/track, 526112 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md1 doesn't contain a valid partition table

Disk /dev/md2: 10.7 GB, 10742136832 bytes
2 heads, 4 sectors/track, 2622592 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md2 doesn't contain a valid partition table

Disk /dev/md0: 106 MB, 106823680 bytes
2 heads, 4 sectors/track, 26080 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Device Boot Start End Blocks Id System

Disk /dev/md3: 21.4 GB, 21476081664 bytes
2 heads, 4 sectors/track, 5243184 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md3 doesn't contain a valid partition table

Disk /dev/md4: 21.4 GB, 21476081664 bytes
2 heads, 4 sectors/track, 5243184 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md4 doesn't contain a valid partition table

Disk /dev/md5: 24.0 GB, 24067047424 bytes
2 heads, 4 sectors/track, 5875744 cylinders
Units = cylinders of 8 * 512 = 4096 bytes

Disk /dev/md5 doesn't contain a valid partition table
suse:~ #
 
Old 12-18-2007, 09:50 AM   #2
ramram29
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Registered: Jul 2003
Location: Miami, Florida, USA
Distribution: Debian
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You need to run mdadm so that it recognizes the raid partitions first and then you can mount /dev/md0. Run the following commands to load the raid1 module and to detect the arrays:

modprobe raid1
mdadm -E -s
 
  


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