topic Re: SUPERBLOCK Error in Operating System - Linux

SUPERBLOCK Error

Girish_26 — Mon, 23 May 2005 22:02:57 GMT

I am using linux on DELL POWEREDGE 4600 with squid and qmail server

my file system is ext3, due to some power problem it got shutdown improperly.
after rebooting we got this message

"THE SUPERBLOCK COULD NOT BE READ OR DOES NOT DESCRIBE A CORRECT EXT2 FILE SYSTEM. IF THE DEVICE IS VALID AND REALLY CONTAINS AN EXT2 FILE SYSTEM (AND NOT SWAP OR UFS OR SOMETHING ELSE), THEN THE SUPERBLOCK IS CORRUPT, AND YOU MIGHT TRY RUNNING E2FSCK WITH AN ALTERNATIVE SUPERBLOCK E2FSCK -B 8193 "

I have run e2fsck and fsck commands but i am getting same problem pls help me regarding this.

Thanks in advance

Re: SUPERBLOCK Error

Gopi Sekar — Tue, 24 May 2005 06:13:48 GMT

most likely that your partition is corrupted.

did you try running e2fsck -b 8193 ? if not try that see whether you are lucky. to find out is there any additional superblocks available try running mke2fs -n

also try running badblocks to find and mark any bad blocks.

find out the exit status of e2fsck and it should give you some hint on whether the file system is really rectified or not.

Regards,
Gopi

Re: SUPERBLOCK Error

Steven E. Protter — Tue, 24 May 2005 08:06:39 GMT

Your only options are e2fsck or fsck.

Go for a full check and answer any questions yes.

If this does not recover your system, you will need to destory the filesystem and rebuild it.

SEP

Re: SUPERBLOCK Error

Stuart Browne — Tue, 24 May 2005 09:49:22 GMT

What commands did you run?

Generally a super-block will be placed at the first block of each logical segment size, i.e. block 8193 or 16385 or 32769.

Using the '-B' allows you to specify which block has a superblock in it.

Try a few of those values, and see if any of them work better.

If not, I hope you've got a backup.

... I've been trying to make this post for the past 12 hours! (on and off) .. So frustrating! ..

Re: SUPERBLOCK Error

Girish_26 — Tue, 31 May 2005 10:27:32 GMT

Thank you very much for each and every one who has responded to my query...