Lustre discuss - Oct 2011 - Anybody have a client running on a 2.6.37 or later kernel?

Folks,

I''ve got a need to run a 2.6.37 or later kernel on client machines in
order to properly support AMD Interlagos CPUs. My other option is to switch from
RHEL 5.x to RHEL 6.x and use the whamcloud 1.8.6-wc1 patchless client (the
latest RHEL 6 kernel also supports Interlagos). But I would first like to
investigate using a 2.6.37 or later kernel on RHEL 5.

I have a running kernel and started down the path of building Lustre against
2.6.37.6 and ran into the changes that have been made wrt to ioctl(), proc
structures, etc.  I am *not* a kernel programmer would rather not mess around
too much in the source.

So I am asking if anyone has successfully patched up Lustre to get a client
working with 2.6.37.6 or later.

Thanks!

Tim

Why not use the RHEL6 kernel on RHEL5?  That''s probably much easier.

Kevin


On Oct 21, 2011, at 9:50 PM, "Carlson, Timothy S" <Timothy.Carlson
at pnnl.gov> wrote:
> Folks,
> 
> I''ve got a need to run a 2.6.37 or later kernel on client machines
in order to properly support AMD Interlagos CPUs. My other option is to switch
from RHEL 5.x to RHEL 6.x and use the whamcloud 1.8.6-wc1 patchless client (the
latest RHEL 6 kernel also supports Interlagos). But I would first like to
investigate using a 2.6.37 or later kernel on RHEL 5.
> 
> I have a running kernel and started down the path of building Lustre
against 2.6.37.6 and ran into the changes that have been made wrt to ioctl(),
proc structures, etc.  I am *not* a kernel programmer would rather not mess
around too much in the source.
> 
> So I am asking if anyone has successfully patched up Lustre to get a client
working with 2.6.37.6 or later.
> 
> Thanks!
> 
> Tim 
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
Confidentiality Notice: This e-mail message, its contents and any attachments to
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I''m trying that path as well but getting the RHEL 6 kernel going on my
machine has proven a bit hard. I got 2.6.37.6 going on the first try but the
RHEL 6 kernel is having a problem finding my root partition. This is usually a
driver not getting loaded into the initrd. I  build the kernel just  fine, it
looks like I have the correct modules to support booting from my IDE (exposed as
a SCSI) drive, but I get the dreaded "can''t find /" and then
an init panic.  It''s a pretty basic system, with no LVM or other
complications. I''ll figure it out eventually, but I''ve had to
use my IPMI console way too much in the past day to boot back into working
kernels. :)

Tim
> -----Original Message-----
> From: Kevin Van Maren [mailto:KVanMaren at fusionio.com]
> Sent: Saturday, October 22, 2011 8:24 AM
> To: Carlson, Timothy S
> Cc: Lustre-discuss at lists.lustre.org
> Subject: Re: [Lustre-discuss] Anybody have a client running on a 2.6.37 or
> later kernel?
> 
> Why not use the RHEL6 kernel on RHEL5?  That''s probably much
easier.
> 
> Kevin
> 
> 
> On Oct 21, 2011, at 9:50 PM, "Carlson, Timothy S"
> <Timothy.Carlson at pnnl.gov> wrote:
> 
> > Folks,
> >
> > I''ve got a need to run a 2.6.37 or later kernel on client
machines in order to
> properly support AMD Interlagos CPUs. My other option is to switch from
> RHEL 5.x to RHEL 6.x and use the whamcloud 1.8.6-wc1 patchless client (the
> latest RHEL 6 kernel also supports Interlagos). But I would first like to
> investigate using a 2.6.37 or later kernel on RHEL 5.
> >
> > I have a running kernel and started down the path of building Lustre
> against 2.6.37.6 and ran into the changes that have been made wrt to
ioctl(),
> proc structures, etc.  I am *not* a kernel programmer would rather not mess
> around too much in the source.
> >
> > So I am asking if anyone has successfully patched up Lustre to get a
client
> working with 2.6.37.6 or later.
> >
> > Thanks!
> >
> > Tim
> > _______________________________________________
> > Lustre-discuss mailing list
> > Lustre-discuss at lists.lustre.org
> > http://lists.lustre.org/mailman/listinfo/lustre-discuss
> 
> Confidentiality Notice: This e-mail message, its contents and any
> attachments to it are confidential to the intended recipient, and may
> contain information that is privileged and/or exempt from disclosure under
> applicable law. If you are not the intended recipient, please immediately
> notify the sender and destroy the original e-mail message and any
> attachments (and any copies that may have been made) from your system
> or otherwise. Any unauthorized use, copying, disclosure or distribution of
> this information is strictly prohibited.

And of course an hour after I sent this message I got a working RHEL 6 kernel
(2.6.32-131.17.1.el6.x86_64)  on my RHEL 5 system, replaced OFED to get XRC
support, rebuilt Lustre (1.8.6-wc1) and am now testing this configuration.
It''s not the prettiest setup in the world but it seems to be working so
far.

Thanks

Tim
> -----Original Message-----
> From: lustre-discuss-bounces at lists.lustre.org [mailto:lustre-discuss-
> bounces at lists.lustre.org] On Behalf Of Carlson, Timothy S
> Sent: Sunday, October 23, 2011 3:19 PM
> To: ''Kevin Van Maren''
> Cc: Lustre-discuss at lists.lustre.org
> Subject: Re: [Lustre-discuss] Anybody have a client running on a 2.6.37 or
> later kernel?
> 
> I''m trying that path as well but getting the RHEL 6 kernel going
on my
> machine has proven a bit hard. I got 2.6.37.6 going on the first try but
the
> RHEL 6 kernel is having a problem finding my root partition. This is
usually a
> driver not getting loaded into the initrd. I  build the kernel just  fine,
it looks
> like I have the correct modules to support booting from my IDE (exposed as
> a SCSI) drive, but I get the dreaded "can''t find /" and
then an init panic.  It''s a
> pretty basic system, with no LVM or other complications. I''ll
figure it out
> eventually, but I''ve had to use my IPMI console way too much in
the past
> day to boot back into working kernels. :)
> 
> Tim
> 
> > -----Original Message-----
> > From: Kevin Van Maren [mailto:KVanMaren at fusionio.com]
> > Sent: Saturday, October 22, 2011 8:24 AM
> > To: Carlson, Timothy S
> > Cc: Lustre-discuss at lists.lustre.org
> > Subject: Re: [Lustre-discuss] Anybody have a client running on a
2.6.37 or
> > later kernel?
> >
> > Why not use the RHEL6 kernel on RHEL5?  That''s probably much
easier.
> >
> > Kevin
> >
> >
> > On Oct 21, 2011, at 9:50 PM, "Carlson, Timothy S"
> > <Timothy.Carlson at pnnl.gov> wrote:
> >
> > > Folks,
> > >
> > > I''ve got a need to run a 2.6.37 or later kernel on
client machines in order
> to
> > properly support AMD Interlagos CPUs. My other option is to switch
from
> > RHEL 5.x to RHEL 6.x and use the whamcloud 1.8.6-wc1 patchless client
(the
> > latest RHEL 6 kernel also supports Interlagos). But I would first like
to
> > investigate using a 2.6.37 or later kernel on RHEL 5.
> > >
> > > I have a running kernel and started down the path of building
Lustre
> > against 2.6.37.6 and ran into the changes that have been made wrt to
> ioctl(),
> > proc structures, etc.  I am *not* a kernel programmer would rather not
> mess
> > around too much in the source.
> > >
> > > So I am asking if anyone has successfully patched up Lustre to
get a client
> > working with 2.6.37.6 or later.
> > >
> > > Thanks!
> > >
> > > Tim
> > > _______________________________________________
> > > Lustre-discuss mailing list
> > > Lustre-discuss at lists.lustre.org
> > > http://lists.lustre.org/mailman/listinfo/lustre-discuss
> >
> > Confidentiality Notice: This e-mail message, its contents and any
> > attachments to it are confidential to the intended recipient, and may
> > contain information that is privileged and/or exempt from disclosure
> under
> > applicable law. If you are not the intended recipient, please
immediately
> > notify the sender and destroy the original e-mail message and any
> > attachments (and any copies that may have been made) from your system
> > or otherwise. Any unauthorized use, copying, disclosure or
distribution of
> > this information is strictly prohibited.
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss

i have some patches to get the 1.8.6-wc1 client running on FC14.  i was
working on FC15 (which would be 2.6.38) but got distracted.  the
changes needed to get to 2.6.38 are a bit tedious.  the kernel warning
flags changed and some of the configure tests need to be re-written a
bit so they don''t -Werror

On Fri, 21 Oct 2011 20:49:57 -0700
"Carlson, Timothy S" <Timothy.Carlson at pnnl.gov> wrote:
> Folks,
> 
> I''ve got a need to run a 2.6.37 or later kernel on client machines
in order to properly support AMD Interlagos CPUs. My other option is to switch
from RHEL 5.x to RHEL 6.x and use the whamcloud 1.8.6-wc1 patchless client (the
latest RHEL 6 kernel also supports Interlagos). But I would first like to
investigate using a 2.6.37 or later kernel on RHEL 5.
> 
> I have a running kernel and started down the path of building Lustre
against 2.6.37.6 and ran into the changes that have been made wrt to ioctl(),
proc structures, etc.  I am *not* a kernel programmer would rather not mess
around too much in the source.
> 
> So I am asking if anyone has successfully patched up Lustre to get a client
working with 2.6.37.6 or later.
> 
> Thanks!
> 
> Tim 
> _______________________________________________
> Lustre-discuss mailing list
> Lustre-discuss at lists.lustre.org
> http://lists.lustre.org/mailman/listinfo/lustre-discuss
>