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NFS export broke with change from ext3 to xfs

To: xfs@xxxxxxxxxxx
Subject: NFS export broke with change from ext3 to xfs
From: Krzysztof Adamski <k@xxxxxxxxxxx>
Date: Mon, 04 Jan 2010 19:48:20 -0500
Hi All,

I just changed one filesystem on my mythbox from ext3 to xfs, and now I can't get a client machine to NFS mount from it.

This is the export file on the server:
/file-store/nfs-roots/f1/home   f1(rw,no_root_squash,sync,no_subtree_check)
/file-store/nfs-roots/f1/usr        f1(rw,no_root_squash,sync,no_subtree_check)
/file-store/nfs-roots/f1/var        f1(rw,no_root_squash,sync,no_subtree_check)

and on the client(f1) the three filesystems are mount on /home, /usr, and /var

This worked fine when /file-store on the server was formatted with ext3, now that it is formatted with xfs I get this message on the client:
mount.nfs: Stale NFS file handle
I get this message 3 times.
Nothing else changed, both systems are Debian Lenny with custom kernel.
Server is 2.6.28, client is NFS is version 3.
The fstab on the server has this:
/dev/mapper/big--raid-file--store       /file-store     xfs     noatime,logbsize=256k,inode64   0       1

The reason for the change of the filesystem was an upgrade of the drives in the RAID, now the filesystem is 7T instead of 2.4T,
nothing else was changed. Why did this work with ext3 and does not with XFS? What can I do to get this to work, short of reverting to ext3?

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