[Lustre-discuss] Building Lustre client on Linux kernel 3.14

[Peng Tao]

On Thu, May 29, 2014 at 6:15 PM, Bartek <bgrinning at gmail.com> wrote:
> Hello,
>
> I'm trying to build Lustre client on Debian Wheezy with kernel
> 3.14-0.bpo.1-amd64. Here are my build steps are:
> sh ./autogen.sh
> sudo ./configure --disable-server
> sudo dpkg-buildpackage
> sudo dpkg -i lustre-source_2.5.59.0-32-gb265903_all.deb
> sudo m-a -t build lustre
> I also patched debian/rules to: ./configure --disable-server
> --disable-ldfiskfs
>
> I'm aware of changes needed for latest kernels (3.12-14):
> https://jira.hpdd.intel.com/browse/LU-4416
> https://jira.hpdd.intel.com/browse/LU-4993
>
> So far, I applied the shrinker patch locally:
> http://review.whamcloud.com/#/c/9300 and that allowed me to get past the
> shrinker compilation error. But now I'm running into another error (error:
> "CONFIG_LNET_MAX_PAYLOAD" redefined) for which I didn't find any mentions in
> Jira:
>
> ...
> echo "#define LUSTRE_RELEASE 3.14_0.bpo.1_amd64_gb265903" >> tmpver
> cmp -s ../lustre/include/lustre/lustre_build_version.h tmpver > tmpdiff 2>
> /dev/null &&   \
>                 rm -f tmpver tmpdiff ||         \
>     mv -f tmpver ../lustre/include/lustre/lustre_build_version.h
> make[5]: Leaving directory `/usr/src/modules/lustre/lustre'
> /usr/bin/make CC="gcc"  -C /lib/modules/3.14-0.bpo.1-amd64/build       \
>   -f /usr/src/modules/lustre/build/Makefile
> LUSTRE_LINUX_CONFIG=/lib/modules/3.14-0.bpo.1-amd64/build/.config \
>   LINUXINCLUDE='-I$(srctree)/arch/$(SRCARCH)/include
> -I$(srctree)/arch/$(SRCARCH)/include/generated -Iinclude $(if
> $(KBUILD_SRC),-Iinclude2 -I$(srctree)/include)
> -I$(srctree)/arch/$(SRCARCH)/include/uapi
> -Iarch/$(SRCARCH)/include/generated/uapi -I$(srctree)/include/uapi
> -Iinclude/generated/uapi -include
> /lib/modules/3.14-0.bpo.1-amd64/source/include/linux/kconfig.h' \
>   M=/usr/src/modules/lustre -o tmp_include_depends -o scripts -o \
>   include/config/MARKER modules
> make[5]: Entering directory `/usr/src/linux-headers-3.14-0.bpo.1-amd64'
>   CC [M]  /usr/src/modules/lustre/libcfs/libcfs/linux/linux-tracefile.o
> In file included from <command-line>:0:0:
> /usr/src/modules/lustre/config.h:26:0: error: "CONFIG_LNET_MAX_PAYLOAD"
> redefined [-Werror]
> In file included from
> /lib/modules/3.14-0.bpo.1-amd64/source/include/linux/kconfig.h:4:0,
It seems that you have enabled CONFIG_LUSTRE_FS in your local kernel
config which would then define CONFIG_LNET_MAX_PAYLOAD on its own. The
easy workaround is to disable in-kernel client in your kernel and
rebuild.
I am not sure if it makes sense to support such use case as there
would be two sets of client modules for the same kernel.

Cheers,
Tao