Re: Mounting an external HDD fails each second time after xfs_repair

[Eric Sandeen <sandeen@sandeen.net>]

Christoph Bier wrote:
> Hi all,
> 
> I use 14 partitions (one extended partition; partition table see
> below) on my new external 400GB HDD that is managed by LVM2 on
> Debian Sarge with a vanilla kernel 2.6.19.
> 
> The first time I mounted the HDD on my desktop everything worked
> fine and I was able to copy 71GB of data. I unmounted and exported
> the HDD and imported and mounted it on my laptop (commands see
> below) running Ubuntu Edgy. Fine, too, I was able to read the data.
> I exported again and imported again on my desktop. But now mounting
> fails with
> 
> 	mount: /dev/mm-extern/audiovideo: can't read superblock
> 
> /var/log/syslog prints:
> [Output:
> http://www.zvisionwelt.de/tmpdownloads/mount-failure-syslog.output]

These are not xfs errors, you have device problems:

Jan 10 11:43:21 localhost kernel: sd 0:0:0:0: SCSI error: return code = 
0x00070000
Jan 10 11:43:21 localhost kernel: end_request: I/O error, dev sda, 
sector 234300481
Jan 10 11:43:22 localhost kernel: I/O error in filesystem ("dm-1") 
meta-data dev dm-1 block 0x17495339       ("xlog_bread") error 5 buf 
count 262144
Jan 10 11:43:22 localhost kernel: XFS: empty log check failed
Jan 10 11:43:22 localhost kernel: XFS: log mount/recovery failed: error 5
Jan 10 11:43:22 localhost kernel: XFS: log mount failed

XFS is responding -properly- to an I/O error from your disk.

-Eric