Server Disk Problem

[Amos Shapira]

On 28 July 2010 06:37, Etzion Bar-Noy <ezaton at tournament.org.il> wrote:
> As I have said - if he could mount it, he can read the superblock.

I missed the "mounted" part, only that he is looking for a secondary superblock.

Still:
1. If he's still looking for a secondary superblock (as fsck
recommend) then that tool can help him achieve that.
2. If he wants to try to salvage the files to another disk then this
tool can help there too.

--Amos

> Ez
>
> On Tue, Jul 27, 2010 at 3:50 AM, Amos Shapira <amos.shapira at gmail.com>
> wrote:
>>
>> 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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>> >>
>> >
>> >
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>
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