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Re: recovering failed resize2fs



On Sat, Oct 18, 2008 at 12:55:56PM -0700, Curtis Doty wrote:
> While attempting to expand a 1.64T ext4 volume to 2.18T the F9 kernel  
> deadlocked. (I have photo of screen/oops if anybody's interested.)

Yes, that would be useful, thanks.

> Now after recovery, the filesystem won't mount
>
>   EXT4-fs: ext4_check_descriptors: Block bitmap for group 13413 not in  
> group (block 0)!<3>EXT4-fs: group descriptors corrupted!
>
> and fsck won't run:
>
>   fsck.ext4: Group descriptors look bad... trying backup blocks...
>   inst: recovering journal
>   fsck.ext4: unable to set superblock flags on inst

Hmm... This sounds like the needs recovery flag was set on the backup
superblock, which should never happen.  Before we try something more
extreme, see if this helps you:

e2fsck -b 32768 -B 4096 /dev/where-inst-is-located

That forces the use of the backup superblock right away, and might
help you get past the initial error.

					- Ted


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