Bug#414932: linux-image-2.6.18-4-ixp4xx: xfs partition from x86 system can not be used on arm

[Michael Prokop <mika@grml.org>]

Package: linux-image-2.6.18-4-ixp4xx
Version: 2.6.18.dfsg.1-11
Severity: important


I'm using the NSLU2 device with Debian
(http://www.cyrius.com/debian/nslu2/):

# uname -a
Linux NSLU 2.6.18-4-ixp4xx #1 Thu Feb 22 14:00:55 UTC 2007 armv5tel GNU/Linux

The problem: using a partition which has been generated on a x86
system using the filesystem XFS does not work on arm/NSLU2. Mounting
the partition does not indicate any problems in the syslog, but
access to the partition/files is definitely not possible:

# ls -la /mnt/sdb2
total 4
drwxr-xr-x 7 root root   76 Oct 13 00:09 /
drwxr-xr-x 7 root root   76 Oct 13 00:09 /
drwxr-xr-x 7 root root   76 Oct 13 00:09 /
drwxr-xr-x 7 root root   76 Oct 13 00:09 /
drwxr-xr-x 7 root root   76 Oct 13 00:09 ./
drwxr-xr-x 4 root root 4096 Mar  7 19:46 ../
#

Though the disk usage is displayed correct:

# df -h
Filesystem            Size  Used Avail Use% Mounted on
/dev/sda1             773M  606M  128M  83% /
tmpfs                  15M     0   15M   0% /lib/init/rw
udev                   10M   44K   10M   1% /dev
tmpfs                  15M     0   15M   0% /dev/shm
/dev/sdb2             271G   95G  176G  35% /mnt/sdb2

The XFS partition can be used without any problems on the x86
system, there's no data loss. XFS itself is ok on arm/NSLU2 if the
partition has been generated on the arm platform using mkfs.xfs.

I played around with xfs_repair, xfs_db, xfs_check,... tons of error
messages are displayed though the partition itself is ok - it's just
that there seem to be serious problems on the arm platform.

The problem is reproducable, just run something like

# mkfs.xfs -d file,name=/file,size=20m

on a x86 system and try to mount the file on arm/NSLU2 then.

If you need any further information, debugging output,... please let
me know.

regards,
-mika-