[Lustre-discuss] open() ENOENT bug

Peter Kjellstrom cap at nsc.liu.se
Thu Oct 30 06:05:57 PDT 2008


On Thursday 30 October 2008, Brian J. Murrell wrote:
> On Thu, 2008-10-30 at 01:35 -0400, Robin Humble wrote:
> > Hi,
>
> Hi.
>
> > we have a user with simultaneously starting fortran runs that fail
> > about 10% of the time because Lustre sometimes returns ENOENT instead
> > of EACCES to an open() request on a read-only file.
>
> I can reproduce this on 1.6.6 as well using your reproducer.

We have also seen this bug on our systems (reported by a user running a 
Fortran code). We have servers with both 1.4 
(2.6.9-55.0.9.EL_lustre.1.4.11.1smp) and 1.6 
(2.6.18-8.1.14.el5_lustre.1.6.4.2smp) lustre.

The error is seen towards both server versions from a cluster with patchless 
1.6.5.1 clients running centos-5.2.x86_64 (2.6.18-92.1.13.el5).

However the error is not seen from another cluster running _patched_ 1.6.5.1 
on centos-4.x86_64 (2.6.9-67.0.7.EL_lustre.1.6.5.1smp).

/Peter

> Can you file a bug in our bugzilla about it?  Please include your
> reproducer program.
>
> b.
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