My company has a server with one big partition with Mysql database and php files. Now this partition seems to be corrupted, as reported from kernel messages when I tried to mount it manually:

[329862.817837] EXT3-fs error (device loop1): ext3_check_descriptors: Block bitmap for group 1 not in group (block 0)!
[329862.817846] EXT3-fs: group descriptors corrupted!

I've tried to recovery it running tools from a PLD livecd. These are the tools I have tested: - e2retrieve - testdisk - photorec - dd_rescue/dd_rhelp - ddrescue - fsck.ext2 - e2salvage without any success.

dumpe2fs 1.41.3 (12-Oct-2008)
Filesystem volume name:   /dev/sda3
Last mounted on:          <not available>
Filesystem UUID:          dd51610b-6de0-4392-a6f3-67160dbc0343
Filesystem magic number:  0xEF53
Filesystem revision #:    1 (dynamic)
Filesystem features:      has_journal filetype sparse_super
Default mount options:    (none)
Filesystem state:         not clean with errors
Errors behavior:          Continue
Filesystem OS type:       Linux
Inode count:              9502720
Block count:              18987570
Reserved block count:     949378
Free blocks:              11555345
Free inodes:              11858398
First block:              0
Block size:               4096
Fragment size:            4096
Blocks per group:         32768
Fragments per group:      32768
Inodes per group:         16384
Inode blocks per group:   512
Last mount time:          Wed Mar 24 09:31:03 2010
Last write time:          Mon Apr 12 11:46:32 2010
Mount count:              10
Maximum mount count:      30
Last checked:             Thu Jan  1 01:00:00 1970
Check interval:           0 (<none>)
Reserved blocks uid:      0 (user root)
Reserved blocks gid:      0 (group root)
First inode:              11
Inode size:               128
Journal inode:            8
Journal backup:           inode blocks
dumpe2fs: A block group is missing an inode table while reading journal inode


e2fsck 1.41.3 (12-Oct-2008)
fsck.ext3: Group descriptors look bad... trying backup blocks...
fsck.ext3: A block group is missing an inode table while checking ext3 journal for /dev/sda3

I tried also backup superblocks, same error result.

There's any other tools I have to test before considering these disk definitely unrecoverable? Many thanks, ip