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

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On 09/08/06, Jesper Juhl <[email protected]> wrote:
On 09/08/06, Grant Coady <[email protected]> wrote:
> On Tue, 8 Aug 2006 16:39:54 +0200, "Jesper Juhl" <[email protected]> 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 <[email protected]>
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