From: Trond Myklebust <trond.myklebust@fys.uio.no>
To: Orion Poplawski <orion@cora.nwra.com>
Cc: linux-nfs@vger.kernel.org
Subject: Re: locking and setgid files
Date: Thu, 09 Sep 2010 17:43:45 -0400 [thread overview]
Message-ID: <1284068625.14656.37.camel@heimdal.trondhjem.org> (raw)
In-Reply-To: <loom.20100909T231305-758@post.gmane.org>
On Thu, 2010-09-09 at 21:15 +0000, Orion Poplawski wrote:
> Is this expected?
>
> $ ls -l /data/sw/svn/dombroski/supergran_paper/db/txn-current-lock
> -rw-rwSr--. 1 dombroski superg 0 Aug 30 16:27 txn-current-lock
>
> $ id
> uid=6412(aaronb) gid=1001(cora) groups=1001(cora),1041(superg)
> context=unconfined_u:unconfined_r:unconfined_t:s0-s0:c0.c1023
>
> open("/data/sw/svn/dombroski/supergran_paper/db/txn-current-lock", O_RDWR) = 3
> fcntl64(3, F_GETLK, {type=F_WRLCK, whence=SEEK_SET, start=0, len=0,
> pid=10771680}) = -1 ENOLCK (No locks available)
>
> I guess I could somewhat understand it, though the fcntl64() call succeeds on
> the server (CentOS 5.5).
It is quite conceivable that your CentOS 5.5 NFS server lacks the proper
support for mandatory posix locking. We only test regularly with
advisory locks.
Cheers
Trond
prev parent reply other threads:[~2010-09-09 21:43 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-09 21:15 locking and setgid files Orion Poplawski
2010-09-09 21:43 ` Trond Myklebust [this message]
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