I've looked around but I didn't find any post concerning my problem.

I'm mounting 3 directories from a remote machine using NFS and I want to use UNIONFS to merge those 3 with a 4th local one. All of them read-only. It seems to works OK, I can read any file, etc... but, when I do a 'df' the machine freezes completly.

# uname -r
2.4.21-47.EL.cernsmp

# cat /etc/fstab
(...)
/dev/sdb1 /dump/0 xfs defaults 0 0 10.10.10.20:/dump/0 /dump/remote/0 nfs rw,hard,intr,tcp 0 0 10.10.10.20:/dump/1 /dump/remote/1 nfs rw,hard,intr,tcp 0 0 10.10.10.20:/dump/2 /dump/remote/2 nfs rw,hard,intr,tcp 0 0 10.10.10.20:/dump/3 /dump/remote/3 nfs rw,hard,intr,tcp 0 0 unionfs /dump/public_html/all unionfs ro,dirs=/dump/0/=ro:/dump/remote/0/=ro:/dump/remote/1/=ro:/dump/remote/2/=ro:/dump/remote/3/=ro 0 0

# mount
(...)
/dev/sdb1 on /dump/0 type xfs (rw)
10.10.10.20:/dump/0 on /dump/remote/0 type nfs (rw,hard,intr,tcp,addr=10.10.10.20) 10.10.10.20:/dump/1 on /dump/remote/1 type nfs (rw,hard,intr,tcp,addr=10.10.10.20) 10.10.10.20:/dump/2 on /dump/remote/2 type nfs (rw,hard,intr,tcp,addr=10.10.10.20) 10.10.10.20:/dump/3 on /dump/remote/3 type nfs (rw,hard,intr,tcp,addr=10.10.10.20) unionfs on /dump/public_html/all type unionfs (ro,dirs=/dump/0/=ro:/dump/remote/0/=ro:/dump/remote/1/=ro:/dump/remote/2/=ro:/dump/remote/3/=ro)

Unionfs is 1.0.14, compiled from source.
Any idea of what the problem could be?
Is there any more info I can provide that could help you understand the problem?

Cheers,
Ricardo Silva

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