On Oct 27, 2010, at 1:56 PM, Jagga Soorma wrote:

> Thanks Michael for your response.  So if I understand correctly, you have not 
> had any issues running the stock kernel with the sun/oracle provided lustre 
> client rpms and instead of using the kernel-ib package you install your own 
> ofed packages.

Thats correct.

> Also, I have the new intel 8 core cpu's and would prefer to go to sles 11 sp 
> 1 instead of sles 11.  However, this is not supported by the lustre client 
> yet.  What has your experience been with building your own lustre rpm's from 
> source using a different kernel?  Do you still have to patch the kernel?  I 
> am also thinking about installing sles 11 sp1 and just building the lustre 
> client rpm's from source.  Not sure if it is required to patch the kernel if 
> I use the most updated version provided my sles 11 sp1.

No. Lustre client kernel modules are self-contained aka "patchless" clients.  
Its been a while since I made the RPMs, but I found this laying around:

./configure --disable-server --with-linux=/usr/src/linux-2.6.22-pfm-xeon 
--with-o2ib --enable-quota --disable-readline

Then I believe 'make rpms' does the right thing.

Now that I said how easy it was, there is a caveat.  Now, there may be issues 
with specific kernels, but this worked for us.  The linux-2.6.22 kernel is a 
kernel.org kernel with pfm patches (performance monitoring) and this kernel 
also has a NDAed patch from AMD because there are bugs in the CPUs and the 
patches are workarounds for the bugs in the CPU.

It works for us, YMMV.

-mb

--
+-----------------------------------------------
| Michael Barnes
|
| Thomas Jefferson National Accelerator Facility
| Scientific Computing Group
| 12000 Jefferson Ave.
| Newport News, VA 23606
| (757) 269-7634
+-----------------------------------------------




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