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Date:      Fri, 3 Sep 2010 08:57:33 -0700
From:      David Brodbeck <gull@gull.us>
To:        freebsd-questions@freebsd.org
Subject:   Re: Weird Linux - FreeBSD/ZFS NFSv4 interoperability problem
Message-ID:  <AANLkTinnfs1B3%2B0dHfXyv4XtrWJ9_c%2BLWsVg0SC9yz_A@mail.gmail.com>
In-Reply-To: <i5qgqa$mi9$2@dough.gmane.org>
References:  <AANLkTikYbz_fxOF=8LjyJ9Ck6otCGn7GeeqnB48bDbM6@mail.gmail.com> <i5qgqa$mi9$2@dough.gmane.org>

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Thanks, Ivan.  I'll pursue it there.

If it's not ready for prime time yet, I understand, but I'd also like
to help nudge it in that direction. :)


On Fri, Sep 3, 2010 at 2:57 AM, Ivan Voras <ivoras@freebsd.org> wrote:
> On 09/02/10 21:25, David Brodbeck wrote:
>>
>> While doing some interoperability testing between Linux and FreeBSD, I
>> came up with this unusual issue. =A0I could use some help figuring out
>> if this is a bug, and if so, where to file it. =A0Here's the scenario:
>>
>> - FreeBSD 8.1-RELEASE server, sharing a ZFS filesystem via NFSv4.
>
> I think that this is the beginning of your problems - even the developer =
who
> is working on NFSv4 says it's too experimental to be used in real world.
>
>> - Linux client (I've tested with RHEL 5.4 and Debian Lenny) mounting
>> said filesystem with NFSv4.
>> - A user on the Linux client does a Subversion checkout onto the
>> mounted filesystem.
>>
>> At the end of the checkout, access to the filesystem hangs. =A0nfsd on
>> the FreeBSD server and rpciod on the Linux client seem to be in a
>> tight loop, and there's lots of network traffic between them. =A0I can
>> reproduce this every time.
>>
>> The problem does not occur if the backing filesystem is UFS instead of
>> ZFS, if NFSv3 is used instead of NFSv4, or if the client is FreeBSD
>> instead of Linux.
>
> ... but you may have stumbled on something specific. I recommend you repe=
at
> this same post (and others you have on the similar topic) on the freebsd-=
fs
> at freebsd.org mailing list, the developer (Rick Macklem) reads it.
>
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