[Lustre-devel] Lustre version patchless kernel?

[Lustre-devel] Lustre version patchless kernel?

[Josephine Palencia]

For the lustre version, the kernel portion indicates patchless...
Should it be something else?

[root at operon22 lustre]# more /proc/fs/lustre/version
> lustre: 1.9.50
> kernel: patchless
> build:  1.9.50-19691231190000-PRISTINE-.extra.linux-2.6.18-92.1.6-2.6.18-92.1.6-lustre-1.9.50

Thanks,
josephin

[Lustre-devel] Lustre version patchless kernel?

[Andreas Dilger]

On Jul 22, 2008  21:02 -0400, Josephine Palencia wrote:
> 
> For the lustre version, the kernel portion indicates patchless...
> Should it be something else?
> 
> [root at operon22 lustre]# more /proc/fs/lustre/version
> > lustre: 1.9.50
> > kernel: patchless
> > build:  1.9.50-19691231190000-PRISTINE-.extra.linux-2.6.18-92.1.6-2.6.18-92.1.6-lustre-1.9.50

This is correct.  For patched kernels there will be a version number here,
indicating the VFS patch API version number.  This hasn't changed in a
long time because we are no longer changing the kernel VFS patches, and
only a few older kernels still need them.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

[Lustre-devel] Lustre version patchless kernel?

[Kossey, Robert]

We also see this on recent releases like 1.6.5.1.  Why do you bother to 
distribute kernel-lustre-smp RPMs if the kernels are not patched?

Thanks,
Bob

>> / 
> />/ For the lustre version, the kernel portion indicates patchless...
> />/ Should it be something else?
> />/ />/ [root at operon22 
> <http://lists.lustre.org/mailman/listinfo/lustre-devel> lustre]# more 
> /proc/fs/lustre/version
> />/ > lustre: 1.9.50
> />/ > kernel: patchless
> />/ > build:  
> 1.9.50-19691231190000-PRISTINE-.extra.linux-2.6.18-92.1.6-2.6.18-92.1.6-lustre-1.9.50 
>
> /
> This is correct.  For patched kernels there will be a version number 
> here,
> indicating the VFS patch API version number.  This hasn't changed in a
> long time because we are no longer changing the kernel VFS patches, and
> only a few older kernels still need them.
>
> Cheers, Andreas
> -- 
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>
>

[Lustre-devel] Lustre version patchless kernel?

[Brian J. Murrell]

On Tue, 2008-07-22 at 23:22 -0400, Kossey, Robert wrote:
> We also see this on recent releases like 1.6.5.1.  Why do you bother to 
> distribute kernel-lustre-smp RPMs if the kernels are not patched?

MDS and OSS kernels *are* patched.  My 1.6.5 here does not report it's
patchless:

lustre: 1.6.5
kernel: 47
build:  1.6.5-19691231190000-PRISTINE-.cache.OLDRPMS.20080513015618.linux-smp-2.6.9-67.0.7.EL_lustre.1.6.5.i686-2.6.9-67.0.7.EL_lustre.1.6.5smp

If you are using our kernel on your MDS/OSS and it's reporting
patchless, this indeed is a bug.  Could you please search our bugzilla
to see if there is a similar bug and if not found, file a bug in our
bugzilla about it?

b.

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[Lustre-devel] Lustre version patchless kernel?

[Kossey, Robert]

Yes, we see patchless reported on our RHEL5U1 Opteron servers with 
1.6.5.1and 1.6.4.3:

root at njxc4ad ~]# cat /proc/fs/lustre/version
lustre: 1.6.5.1
kernel: patchless
build:  
1.6.5.1-19691231190000-PRISTINE-.cache.OLDRPMS.20080618233454.linux-smp-
2.6.18-53.1.14.el5_lustre.1.6.5.1.x86_64-2.6.18-53.1.14.el5_lustre.1.6.5.1smp
[root at njxc4ad ~]# uname -a
Linux njxc4ad.usa.hp.com 2.6.18-53.1.14.el5_lustre.1.6.5.1smp #1 SMP Wed 
Jun 18
19:45:15 EDT 2008 x86_64 x86_64 x86_64 GNU/Linux
[root at njxc4ad ~]#

[root at ichpcsfsd1 ~]# cat /proc/fs/lustre/version
lustre: 1.6.5
kernel: patchless
build:  
1.6.5-19691231190000-PRISTINE-.usr.src.linux-2.6.18-53.1.13.el5_lustre.1
.6.4.3-2.6.18-53.1.13.el5_lustre.1.6.4.3smp
[root at ichpcsfsd1 ~]# uname -a
Linux ichpcsfsd1 2.6.18-53.1.13.el5_lustre.1.6.4.3smp #1 SMP Sun Feb 17 
08:38:44
EST 2008 x86_64 x86_64 x86_64 GNU/Linux
[root at ichpcsfsd1 ~]#

In  both cases, these nodes are running kernels from the 
kernel-lustre-smp RPMs downloaded from the Sun Lustre site. I don't see 
a bug reported for this, so I will submit one.

Thanks,
Bob
>
>> / We also see this on recent releases like 1.6.5.1.  Why do you 
>> bother to 
> />/ distribute kernel-lustre-smp RPMs if the kernels are not patched?
> /
> MDS and OSS kernels *are* patched.  My 1.6.5 here does not report it's
> patchless:
>
> lustre: 1.6.5
> kernel: 47
> build:  
> 1.6.5-19691231190000-PRISTINE-.cache.OLDRPMS.20080513015618.linux-smp-2.6.9-67.0.7.EL_lustre.1.6.5.i686-2.6.9-67.0.7.EL_lustre.1.6.5smp 
>
>
> If you are using our kernel on your MDS/OSS and it's reporting
> patchless, this indeed is a bug.  Could you please search our bugzilla
> to see if there is a similar bug and if not found, file a bug in our
> bugzilla about it?
>
> b.
>
>

[Lustre-devel] Lustre version patchless kernel?

[Andreas Dilger]

On Jul 28, 2008  09:03 -0400, Brian J. Murrell wrote:
> On Tue, 2008-07-22 at 23:22 -0400, Kossey, Robert wrote:
> > We also see this on recent releases like 1.6.5.1.  Why do you bother to 
> > distribute kernel-lustre-smp RPMs if the kernels are not patched?
> 
> MDS and OSS kernels *are* patched.  My 1.6.5 here does not report it's
> patchless:
> 
> lustre: 1.6.5
> kernel: 47
> build:  1.6.5-19691231190000-PRISTINE-.cache.OLDRPMS.20080513015618.linux-smp-2.6.9-67.0.7.EL_lustre.1.6.5.i686-2.6.9-67.0.7.EL_lustre.1.6.5smp
> 
> If you are using our kernel on your MDS/OSS and it's reporting
> patchless, this indeed is a bug.  Could you please search our bugzilla
> to see if there is a similar bug and if not found, file a bug in our
> bugzilla about it?

Brian,
you are being confused by exactly what "patchless" means.  In the context
here, "patchless" means "no VFS patches" and that "clients can run on
patchless kernels".

This has nothing to do with whether the kernel has any of our patches on
it.  Any server kernel HAS to have patches in order to run.

The fact that your kernel reports a "kernel: 47" is because that is the
version of the VFS patch API that is being used on your RHEL4 2.6.9 kernel.
Newer kernels (RHEL5, SLES10, vanilla 2.6.16+) will report "patchless"
here.


Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

[Lustre-devel] Lustre version patchless kernel?

[Andreas Dilger]

On Jul 28, 2008  10:38 -0400, Kossey, Robert wrote:
> Yes, we see patchless reported on our RHEL5U1 Opteron servers with 
> 1.6.5.1and 1.6.4.3:
> 
> In  both cases, these nodes are running kernels from the 
> kernel-lustre-smp RPMs downloaded from the Sun Lustre site. I don't see 
> a bug reported for this, so I will submit one.

You missed my reply.  This is normal, please do not file a bug.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.

[Lustre-devel] Lustre version patchless kernel?

[Kossey, Robert]

Hi Andreas,

Thanks for the explanation.  I actually sent my response, and created bug 16516, before you sent your response, but my posting was delayed by the list moderator since I am not a list subscriber.  I modifed the bug to request that the wording of the program output be changed to something like:

kernel: no VFS patches

This could reduce the confusion that Brian and I and probably others would have with the current wording.

Thanks,
Bob

> -----Original Message-----
> From: Andreas.Dilger at sun.com [mailto:Andreas.Dilger at sun.com]
> On Behalf Of Andreas Dilger
> Sent: Wednesday, July 30, 2008 5:36 AM
> To: Kossey, Robert
> Cc: lustre-devel at lists.lustre.org
> Subject: Re: [Lustre-devel] Lustre version patchless kernel?
>
> On Jul 28, 2008  10:38 -0400, Kossey, Robert wrote:
> > Yes, we see patchless reported on our RHEL5U1 Opteron servers with
> > 1.6.5.1and 1.6.4.3:
> >
> > In  both cases, these nodes are running kernels from the
> > kernel-lustre-smp RPMs downloaded from the Sun Lustre site. I don't
> > see a bug reported for this, so I will submit one.
>
> You missed my reply.  This is normal, please do not file a bug.
>
> Cheers, Andreas
> --
> Andreas Dilger
> Sr. Staff Engineer, Lustre Group
> Sun Microsystems of Canada, Inc.
>
>

[Lustre-devel] Lustre version patchless kernel?

[Andreas Dilger]

On Jul 30, 2008  15:52 +0000, Kossey, Robert wrote:
> Thanks for the explanation.  I actually sent my response, and created
> bug 16516, before you sent your response, but my posting was delayed
> by the list moderator since I am not a list subscriber.  I modifed the
> bug to request that the wording of the program output be changed to
> something like:
>
> kernel: no VFS patches
> 
> This could reduce the confusion that Brian and I and probably others
> would have with the current wording.

Yes, the wording will be changed to "kernel: patchless client", because
several of the regression tests depend on "patchless" being there.

Cheers, Andreas
--
Andreas Dilger
Sr. Staff Engineer, Lustre Group
Sun Microsystems of Canada, Inc.