failed fsck

mlmack · 05-13-2011, 12:43 PM

I use opensuse 11.3. Tried to fsck root using the latest systemrescuecd and got a bad magic number error message. I tried the suggested alternate superblock command and got the same error message. The command I used was "fsck.ext4 /dev/sdc2". When I tried using tune2fs to force fsck at boot, I got the same error message. The system seems to be working more or less ok. What's going on and what should I do to run fsck on root?

MS3FGX · 05-13-2011, 02:24 PM

To start with, what happened that you want to force fsck? Do you suspect some data has been damaged?

Could you post the exact error message you are receiving? Are there any relevant kernel messages when you try and mount the volume or run fsck against it?

mlmack · 05-13-2011, 06:43 PM

I can't quote it but the gist of it was 'bad magic number, corrupted superblock'.
The message with tune2fs was similar except it suggested tring an alternate block. That didn't work. Same error.

The only fsck was with / which should not be mounted.

I'm trying because there have been several hard freezes in the last month and today I got an odd mysql error message with my mail program. Seemed like a good time to fsck.

The strange thing is that it's mostly working just fine.

syg00 · 05-13-2011, 07:44 PM

How did you determine the alternate superblock to use ?.
fsck from a liveCD is the correct procedure - you might just have to back it up and reformat it.

AwesomeMachine · 05-13-2011, 08:22 PM

Try the boot parameter init 1. Just insert it on the kernel line in grub. Nothing will be mounted but the ramdrive. Type fsck without any device or parameters, and read the instructions! I think you want the "-p" switch.

mlmack · 05-14-2011, 10:54 AM

I think I had better look for another forum. Neither one of you read or understood my original post.