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11.18.2008 at 06:29PM PST, ID: 23916583
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6.7

Recovering crashed Linux server

Asked by rdashokraj in Linux Administration, Linux, Linux Setup

Hello,

I tried to clone one CentOS server using 'Ghost for Linux' but showed some SCSI error. Later then when I start the machine normally, it wasn't coming up. It displays the following error:

hde: Invalid capacity for disk in drive
Volume group "VolGroup00" not found
Unable to access resume device (/dev/VolGroup00/LogVol01)
hde: Invalid capacity for disk in drive
hde: Invalid capacity for disk in drive
mount: could not find filesystem '/dev/root'
setuproot: moving /dev failed: No such file or directory
setuproot: error mounting /proc: No such file or directory
switchroot: error mount failed: No such file or directory
Kernel panic - not syncing: Attempted to kill init !

Looks like the filesystem in the LVM got screwed up. The server is actually configured with Mirrored volume with 2 disks involved (sda & sdb). I tried to recover the system by booting the server with rescue CD; once it come up, I could see the root partition is mounted on /mnt/sysimage. Now how can I fix the filesystem issue?  I tried to ran fsck on the two disks which is showing up in 'fdisk -l' but it says the following error:
"Couldn't find ext2 superblock, trying backup blocks.....
fsck.ext2: Bad magic number in super-block while trying to open /dev/sda2..........
..............................................
<finally it says>
you might try running e2fsck with an alternate superblock:
e2fsck -b 8193 <device> "
sh-3.2#

I tried to ran FSCK with alternate superblock but it gives the same error.

Can you suggest me how can I fix this?

Thanks,
AR
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[+][-]11.18.2008 at 07:33PM PST, ID: 22991287

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[+][-]11.18.2008 at 10:22PM PST, ID: 22991943

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[+][-]11.19.2008 at 04:58AM PST, ID: 22993656

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Zones: Linux Administration, Linux, Linux Setup
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Solution Provided By: jools
Participating Experts: 4
Solution Grade: B
 
 
[+][-]11.19.2008 at 07:30PM PST, ID: 23001015

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[+][-]11.19.2008 at 09:45PM PST, ID: 23001457

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[+][-]11.20.2008 at 12:02AM PST, ID: 23001897

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