Re: 2.6.17.8 - do_vfs_lock: VFS is out of sync with lock manager!

["Jesper Juhl" <jesper.juhl@gmail.com>]

On 09/08/06, Jesper Juhl <jesper.juhl@gmail.com> wrote:
> On 09/08/06, Grant Coady <gcoady.lk@gmail.com> wrote:
> > On Tue, 8 Aug 2006 16:39:54 +0200, "Jesper Juhl" <jesper.juhl@gmail.com> wrote:
> >
> > >I have some webservers that have recently started reporting the
> > >following message in their logs :
> > >
> > >  do_vfs_lock: VFS is out of sync with lock manager!
> > >
> > >The serveres kernels were upgraded to 2.6.17.8 and since the upgrade
> > >the message started appearing.
> > >The servers were previously running 2.6.13.4 without experiencing this problem.
> > >Nothing has changed except the kernel.
> > >
> > >I've googled a bit and found this mail
> > >(http://lkml.org/lkml/2005/8/23/254) from Trond saying that
> > >"The above is a lockd error that states that the VFS is failing to track
> > >your NFS locks correctly".
> > >Ok, but that doesn't really help me resolve the issue. The servers are
> > >indeed running NFS and access their apache DocumentRoots from a NFS
> > >mount.
> > >
> > >Is there anything I can do to help track down this issue?
> >
> > I don't have an answer, but offer this observation: five boxen running
> > 2.6.17.8 doing six simultaneous
> >
> >   bzcat /home/share/linux-2.6/patch-2.6.18-rc4.bz2|patch -p1
> >
> > didn't burp.  The /home/share/ is an NFS export from another box running
> > 2.4.33-rc3a, me not sure if this was exercising any NFS locking as the
> > NFS source file was only opened for non-exclusive read-only.
> >
> The NFS server here is running 2.6.11.11 and doesn't seem to be
> reporting any problems. But I now have two more of my webservers (both
> running 2.6.17.8) that have started to complain about "do_vfs_lock:
> VFS is out of sync with lock manager!"
>
> I've not found a way to cause the message to be repported at will unfortunately.
>
Today 3 more of my webservers running 2.6.17.8 reported this message.
The machines all seem to be running fine still, so it doesn't seem to
be a serious problem, but it would still be nice to get it fixed ;)


-- 
Jesper Juhl <jesper.juhl@gmail.com>
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