[Lustre-discuss] 1.8.2 Patchless Client

[CHU, STEPHEN H (ATTSI)]

Ricardo,

Thanks. I knew I had to sync up the kernel versions. I brought up RHEL 5.4 which contains kernel-2.6.18-164.el5. I then do "rsync -alP 2.6.18-164.11.1.el5 2.6.18-164.el5" and "depmod -a". Everything worked again. Seems like we won't be able to use 1.8.2 patchless client setup unless we move to RHEL 5.4.

Steve

-----Original Message-----
From: Ricardo J. Barberis [mailto:ricardo.barberis at dattatec.com] 
Sent: Tuesday, February 16, 2010 2:53 PM
To: lustre-discuss at lists.lustre.org
Cc: CHU, STEPHEN H (ATTSI)
Subject: Re: [Lustre-discuss] 1.8.2 Patchless Client

El Martes 16 Febrero 2010, CHU, STEPHEN H (ATTSI) escribió:
> Hi Brian,
>
> Thanks for the quick reply.
>
> We are using RHEL 5.3 kernel-2.6.18-128.el5. Since we are not using the
> latest kernel, we have, in the past, used rsync to reconcile the
> differences and it worked fine. This is how we can get the patchless
> clients to work between out of sync kernel and the patchless client
> modules. This time it didn't seems to work out.
>
> With the rsync method we were able to retain the use of a specific version
> of RHEL (specific version being used in production; rolling to newer
> version will be based on specific schedules) and continue to move forward
> with test and try out the newest lustre releases. And of course this can
> only go so far. We will have to go with the patched clients if this is not
> working out.
>
> Any insights will be appreciated. Thanks.
>
> Steve

The problem might be that you're mixing 2.6.18-128.* with 2.6.18-164.*, if you 
stick with versions 2.6.18-128.* you should be fine.

At least this is working for our patchless clients:

[root at client001 ~] # rpm -qa | grep -e lustre -e kernel | sort
kernel-headers-2.6.18-164.11.1.el5
kernel-xen-2.6.18-164.11.1.el5
kernel-xen-devel-2.6.18-164.11.1.el5
lustre-client-1.8.1.1-2.6.18_164.el5xen_01
lustre-client-modules-1.8.1.1-2.6.18_164.el5xen_01

We're using virtual machines so lustre modules are compiles for 
kernel-xen-2.6.18-164.el5 but those exact same modules worked fine with 
kernel-xen-2.6.18-164.6.1.el5 and kernel-xen-2.6.18-164.9.1.el5 and now with 
kernel-xen-2.6.18-164.11.1.el5

Regards,
-- 
Ricardo J. Barberis 
Senior SysAdmin - I+D 
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