LinuxQuestions.org - drive failed

So, my hard drive failed yesterday. I managed to use ddrescue to salvage it, but there were 8 errors (totaling in at about 30gB) at the end of the process.

I copied each partition and the MBR seperately. I /boot, swap, and the MBR were saved. I'm having problems with root, however. The filesystem is XFS.

When I initially ran xfs_check on the file, it reported that the log needed to be written with a mount, or removed with xfs_repair -L. I tried to mount it, but get "mount: /dev/loop0: can't read superblock" (using either mount -o loop on the file, or using losetup manually). So, I ran xfs_repair -L and it did a LOT of stuff. I reran xfs_repair (without -L) and yet more changes were made. At this point, it is 'clean' however I still get "mount: /dev/loop0: can't read superblock".

xfs_check prints no information. xfs_repair prints this info:

Code:

pandora:/home/pbransford/fail-recovery # blkid /dev/loop0

/dev/loop0: LABEL="root" UUID="16a2ed09-8455-4e4e-9537-bec5d4918f4e" TYPE="xfs"



pandora:/home/pbransford/fail-recovery # xfs_repair /dev/loop0

Phase 1 - find and verify superblock...

Phase 2 - using internal log

        - zero log...

        - scan filesystem freespace and inode maps...

        - found root inode chunk

Phase 3 - for each AG...

        - scan and clear agi unlinked lists...

        - process known inodes and perform inode discovery...

        - agno = 0

        - agno = 1

        - agno = 2

        - agno = 3

        - process newly discovered inodes...

Phase 4 - check for duplicate blocks...

        - setting up duplicate extent list...

        - check for inodes claiming duplicate blocks...

        - agno = 0

        - agno = 3

        - agno = 1

        - agno = 2

Phase 5 - rebuild AG headers and trees...

        - reset superblock...

Phase 6 - check inode connectivity...

        - resetting contents of realtime bitmap and summary inodes

        - traversing filesystem ...

        - traversal finished ...

        - moving disconnected inodes to lost+found ...

Phase 7 - verify and correct link counts...

done

Ideas? Obviously there's enough of the primary and backup superblocks... however mount still cannot do it's magic. I'm aware that 30gB is a large hunk of drive to lose - but I'm hoping to get what I can get.

Note this isn't an emergency. There is nothing irreplaceable on the drive - I know enough to keep backups of critical information ;)

EDIT:

More information. This is from dmesg when I try to mount it:

Code:

[39727.296253] attempt to access beyond end of device

[39727.296278] loop0: rw=0, want=479733024, limit=427692312

[39727.296298] I/O error in filesystem ("loop0") meta-data dev loop0 block 0x1c98251f

              ("xfs_read_buf") error 5 buf count 512

[39727.296322] XFS: size check 2 failed

This is bad, I gather. Still though - any ideas?