From: Tomasz Chmielewski <mangoo@wpkg.org>
To: Trond Myklebust <trond.myklebust@fys.uio.no>
Cc: nfs@lists.sourceforge.net
Subject: Re: how to check if file locking is working?
Date: Tue, 01 May 2007 08:24:35 +0200 [thread overview]
Message-ID: <4636DD23.2000509@wpkg.org> (raw)
In-Reply-To: <1177882063.6400.39.camel@heimdal.trondhjem.org>
Trond Myklebust schrieb:
> On Thu, 2007-04-26 at 14:19 +0200, Tomasz Chmielewski wrote:
>> Tomasz Chmielewski wrote:
>>> How can I check if file locking is working?
>>>
>>> I have a NFS4 server (Linux x86) and a NFS4 client (Linux ARM).
>>>
>>>
>>> NFS4 server exports a Debian-ARM root filesystem (/bin, /etc, /usr... a
>>> complete OS).
>>>
>>> I want to "upgrade" the Debian-ARM root filesystem in a NFS4 chroot, but
>>> it fails - dpkg claims that:
>>>
>>> debconf: DbDriver "config": /var/cache/debconf/config.dat is locked by
>>> another process
>>>
>>> It's not true, as that export is only used by that one client.
>>>
>>> So what comes to my mind, is that file locking is somehow broken.
>>>
>>> How can I check if NFS4 file locking works properly, or is broken?
>> I changed the client to use NFSv3 instead of NFSv4, and suddenly, the
>> things started to work...
>>
>> Ideas what I might be missing? Why locking works if I use NFSv3 on the
>> client, but doesn't when I use NFSv4 on the client (other than NFS
>> version, nothing else changed).
>>
>> Kernel option on a client or server, export options on the server, mount
>> options on the client etc.?
>
> nfsroot does not support NFSv4 at this time.
Hmm, I didn't say anything about nfsroot, did I?
I merely did a chroot over NFSv4, and some apps don't work well then.
--
Tomasz Chmielewski
http://wpkg.org
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next prev parent reply other threads:[~2007-05-01 6:26 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-04-26 11:29 how to check if file locking is working? Tomasz Chmielewski
2007-04-26 12:19 ` Tomasz Chmielewski
2007-04-29 21:27 ` Trond Myklebust
2007-05-01 6:24 ` Tomasz Chmielewski [this message]
2007-05-01 7:01 ` Trond Myklebust
2007-05-03 13:36 ` Tomasz Chmielewski
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