failed to locate log tail

[Michal Kozlowski <michal@xxxxxxxxxxxxxxxx>]

Hi
I have a small problem that I'm not sure how to solve, my entire file
system is xfs, but after several umount/mount operation I get this error,

XFS: failed to locate log tail
XFS: log mount/recovery failed
XFS: log mount failed

I can easily fix this by running xfs_repair, but it's required booting
from a boot disk since this happens to my root.  Now it's seems like it
only happens to the root, for some reason.  I'm using xfsprogs 1.3.12 now
since I thought maybe that would fix the error since it was also happening
in 1.3.7.  Kernel version 2.4.12-xfs and running with 512 Mb of RAM.  The
only strange thing could be the experimental hpt 370 controller software
raid driver, but I've had no other problems with it.  I can usually
recreate the problem but running the following code
for((i=0;i<100;i++)); do
  mount -a -t xfs
  umount -a -t xfs
done

If you need any over messages I'll be glad to send them

Thanks for everything
Mike