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Repeated NFS failures
since quite a bit of time, I experience sporadic but frequent NFS
failures between my 4.0 i386 server and my amd64-current client.
Sometimes, in the midst of a file transfert (I guess only while writing
to the server), the transfer would hang. The client is not hung, though,
so I can access a utility like "nfsstat" which shows an increasing
number of retries. Yet, "reboot" is stuck and I have to reboot the
machine the dirty way.
At first, I thought this might been caused by an IPv6 nfs mount. But I
have the same problem when I export the mount points through IPv4 only.
Sometimes, I got a crash. The kernel obviously go stray, nothing
responds anymore, not even the ACPI power button, so I have to reboot also.
I've seen there are some issues with NFS/AMD64/Xen. Could it be somewhat
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