Server Disk Problem

[Amos Shapira]

2010/7/27 Etzion Bar-Noy <ezaton at tournament.org.il>
>
> Are you checking the correct device?
> If fsck.ext3 can't find superblock, the system could not have mounted the device to begin with.
> Please post the results of
> lvm lvs
> cat /etc/fstab (if available)
> Thanks
> Ez

Here is a method using testdisk to find the backup superblocks:
http://www.cgsecurity.org/wiki/Advanced_Find_ext2_ext3_Backup_SuperBlock

(never tried this).

--Amos

>
> 2010/7/26 Daniel Feiglin <dilogsys at inter.net.il>
>>
>> Hello folks!
>>
>> I am trying to assist in the following situation:
>>
>> The user has a 1u IBM "Pizza" server. It was configured as one partition
>> (ext3) and loaded with Centos something-or-other, with the partition set
>> up as a single LVM volume (yes, including the root directory).
>>
>> One fine day, after a reboot, it ran fsck which conked out after
>> checking about 12% of the disk advising to run fsck manually. At that
>> point, we logged in as root, and ran fsck -n /dev/whatever to see what's
>> happening.
>>
>> The latter yielded the dreaded corrupt super block, try the next one
>> (8193). That (as I kind of expected) didn't work either.
>>
>> >From being root I can "see" the various directories an even cd to them.
>> I am aware  that it means little if their contents are corrupted.
>>
>> Question:
>>
>> 1. Are there any recovery tools for this kind of situation?
>> 2. Is my only choice, to install another pre-partitioned hard disk, log
>> in with (say) a "live" CD, mount the corrupt disk and try to manually
>> copy my data directories?
>>
>> Regards,
>>
>>
>> Daniel
>>
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