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Old 01-19-2009, 09:06 PM
Jonathan Hudson
Default Unrecoverable error after conversion to ext4

I (attempted to) converted a scratch file system from ext3 to ext4 on
Jaunty Alpha3. It appears the file system is now screwed (which I don't
care about), as follows:

# umount /t/opt/
# tune2fs -O extents,uninit_bg,dir_index /dev/vol01/opt
# fsck -f /dev/vol01/opt
fsck 1.41.3 (12-Oct-2008)
e2fsck 1.41.3 (12-Oct-2008)
fsck.ext4: Group descriptors look bad... trying backup blocks...
Group descriptor 81 checksum is invalid. Fix<y>? yes

Group descriptor 125 checksum is invalid. Fix<y>? yes

/opt contains a file system with errors, check forced.
Pass 1: Checking inodes, blocks, and sizes
Group 81's inode table at 2654210 conflicts with some other fs block.
Relocate<y>? yes

Error allocating 512 contiguous block(s) in block group 81 for inode
table: Could not allocate block in ext2 filesystem Restarting e2fsck
from the beginning...
fsck.ext4: Group descriptors look bad... trying backup blocks...

(repeats for ever)

Any hints as to whether this is recoverable before I mkfs.ext4 over it?


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