MMapFile: File locking failed with error code 37

[Jerry Feldman]

Thanks. We submitted an official bug report to Red Hat. Under the rules=20
I must work under, all my systems must be running RHEL 5.2 unpatched. =20
While we have a mix of systems in Toronto with both Solaris and older=20
RHEL servers, we use the NFS server for both development and server.=20
I'll try to grab a more recent kernel when I get a chance to reboot. I=20
can actually run a test on another system first just to verify that the=20
new kernel fixes the problem.

On 02/03/2009 08:52 PM, Nuno Sucena Almeida wrote:
> Hi Jerry,
>
>  as I mentioned, our problem was with locking and after some searching
>  on the lkml , reading about similar reports and actually seeing a
>  diff on the kernel git repository, I upgraded the kernel on the
>  server and stopped having problems with NFS. It might be the same
>  issue that you have and at that time I was surprised that it took
>  that long for the problem and a fix to show up. I actually don't
>  remember the circustances where the client machines would start to
>  complain, but it wasn't obvious, although probably I used strace to
>  reach the conclusion that some weird thing was going on with locking.
>        	   Good luck!,
> 			Nuno
>
> On Thu, Jan 29, 2009 at 01:08:18PM -0500, Jerry Feldman wrote:
>  =20
>> I have a bit more information. I was able to find the lines of code, a=
nd it=20
>> has nothing to do with mmap(2). The problem is with fcntl, and only wh=
en=20
>>  int fcnt =3D fcntl(fd, F_SETLK, &fl); /* fails when NFS server is RHE=
L 5.2=20
>>    =20
> _______________________________________________
> Discuss mailing list
> Discuss-mNDKBlG2WHs at public.gmane.org
> http://lists.blu.org/mailman/listinfo/discuss
>
>  =20


--=20
Jerry Feldman <gaf-mNDKBlG2WHs at public.gmane.org>
Boston Linux and Unix
PGP key id: 537C5846
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