Linux (client) - FreeBSD (server) NFS4 interoperability problem

Tomáš Drbohlav drb at karlov.mff.cuni.cz
Fri Dec 3 10:55:23 UTC 2010


On 2.12.2010 22:53, Rick Macklem wrote:
>> Hello,
>>
>> I am setting up an experimental (kerberized) NFSv4 server on FreeBSD
>> 8.1-RELEASE-p1 and while between fBSD server and client it seems to
>> work
>> more or less ok, while connecting from Linux (Ubuntu), I am not able
>> to
>> read any file contents. Walking through dirs is ok, but when clients
>> asks for a file, it freezes.
>>
>> As I noticed in the list, tcpdump may be useful, so I made one, see
>> attached file.
>>
>> Although I am not an nfs expert, when I opened the dump in WireShark
>> it
>> seems to me, that server does not respond to packet #83, Compound Call
>> containing OPEN opcode. That is probably the thing which disturbes
>> Linux
>> client. But why? It is beyond my capabilities.
>>
>> What can I do to make i work? Is it me or server, who si broken?
>>
> I'll take a look at the packet dump when I get home in a couple of
> days.

Thank, we appreciate any help!

> The main thing I'd suggest is trying a non-Kerberized NFSv4
> mount from Linux->FreeBSD and see how that does?

Looks almost the same to me. Attaching dump.

Please note: server is 10.32.82.53, client 10.32.82.31

Thanks,

  Drb
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