Strange xfs errors on my Ubuntu machine

[Chris Cohen]

I have a xfs volume on LVM on Ubuntu Hardy with linux 2.6.24-21 running
as dom0.
Since about 5 days I get strange errors (please see the attached
/var/log/messages).
I cant use the partition then. (Input/Output Error) Umount sometimes works.
I always need to hard reboot and sometimes I have to run xfs_repair.
What is this? How can I fix this?

-- 
Thanks very much
Chris

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