Lustre discuss - Sep 2009 - Compiling patchless client 1.8.1 on 2.6.18-164.el5xen

Hello all,

I''m triyng out Lustre for a "cluster" of Xen guests.

The guests have CentOS loaded with their latest kernel as mentioned in the
subject and I tried using the lustre-client-* rpms with no success: the rpms
install fine and depmod doesn''t complain but the modules can''t
be inserted
on this kernel.

So, I tried compiling from sources and this is as far as I got:

  CC [M]  /root/Info/lustre-1.8.1/lustre/llite/lloop.o
In file included from
/root/Info/lustre-1.8.1/lustre/include/lustre/lustre_user.h:44,
                 from
/root/Info/lustre-1.8.1/lustre/include/lustre/lustre_idl.h:97,
                 from /root/Info/lustre-1.8.1/lustre/include/lustre_lib.h:45,
                 from /root/Info/lustre-1.8.1/lustre/llite/lloop.c:111:
/root/Info/lustre-1.8.1/lustre/include/lustre/ll_fiemap.h:82:1: error:
"FIEMAP_FLAGS_COMPAT" redefined
In file included from
/usr/src/kernels/2.6.18-164.el5-xen-i686//include/linux/fs.h:299,
                 from /root/Info/lustre-1.8.1/lustre/llite/lloop.c:88:
/usr/src/kernels/2.6.18-164.el5-xen-i686//include/linux/fiemap.h:42:1: error:
this is the location of the previous definition
make[6]: *** [/root/Info/lustre-1.8.1/lustre/llite/lloop.o] Error 1
make[5]: *** [/root/Info/lustre-1.8.1/lustre/llite] Error 2
make[4]: *** [/root/Info/lustre-1.8.1/lustre] Error 2
make[3]: *** [_module_/root/Info/lustre-1.8.1] Error 2
make[3]: Leaving directory `/usr/src/kernels/2.6.18-164.el5-xen-i686''
make[2]: *** [modules] Error 2
make[2]: Leaving directory `/root/Info/lustre-1.8.1''
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/root/Info/lustre-1.8.1''
make: *** [all] Error 2


Reading bug # 19808 (2.6.29-fc11 patchless support), from comments # 18 and # 25
to # 27 I assume (yes, I know what they say about it :) ) that it''s
safe to delete
that define.

I actually commented it out and make ran fine, so I''m going to test it
and report
if I encounter problems, but I''d like to know if someone advises
against it.

Best regards,
-- 
Ricardo J. Barberis 
Senior SysAdmin - I+D 
Dattatec.com :: Soluciones de Web Hosting 
Su Hosting hecho Simple..!

El Lunes 28 Septiembre 2009, Ricardo J. Barberis
escribi?:
> Hello all,
>
> I''m triyng out Lustre for a "cluster" of Xen guests.
>
> The guests have CentOS loaded with their latest kernel as mentioned in the
> subject and I tried using the lustre-client-* rpms with no success: the
> rpms install fine and depmod doesn''t complain but the modules
can''t be
> inserted on this kernel.
[ ...snip... ]
> Reading bug # 19808 (2.6.29-fc11 patchless support), from comments # 18 and
> # 25 to # 27 I assume (yes, I know what they say about it :) ) that
it''s
> safe to delete that define.
>
> I actually commented it out and make ran fine, so I''m going to
test it and
> report if I encounter problems, but I''d like to know if someone
advises
> against it.
>
> Best regards,
Hello again,

Well, I succesfully compiled lustre 1.8.1 for the unpathced CentOs kernel-xen 
2.6.18-164.el5xen and was able to mount lustre on the client, but I catched 
the error reported in bugzilla # 20020 (lustre_shrink_reply_v2 LBUG) so I 
can''t do more tests till it''s solved.

I can reproduce the bug easily and I''d like to test patches but the bug
report
is pretty messy and I can''t figure which patches I need to apply.

If anyone is interested in pointing me to the correct set of patches
I''ll
gladly test them.

Thank you,
-- 
Ricardo J. Barberis 
Senior SysAdmin - I+D 
Dattatec.com :: Soluciones de Web Hosting 
Su Hosting hecho Simple..!