[LU-6547] build errors building against recent 4.1-rc1 kernel on Ubuntu 15.04 building linux-tracefile

• Status: Resolved
• Project: Lustre
• Type: Bug
• Priority: Major
• Reporter: Colin Ian King
• Assignee: WC Triage
• Resolution: Duplicate
• Severity: 1

Description

Building against a recent kernel the -Werror option in the Rules file is catching a re-definition of CONFIG_LNET_MAX_PAYLOAD and causing the build to fail.

make[3]: Entering directory '/usr/src/linux-headers-4.1.0-rc1+'
LD /home/king/lustre/lustre-release/built-in.o
LD /home/king/lustre/lustre-release/libcfs/built-in.o
LD /home/king/lustre/lustre-release/libcfs/libcfs/built-in.o
CC [M] /home/king/lustre/lustre-release/libcfs/libcfs/linux/linux-tracefile.o
In file included from <command-line>:0:0:
/home/king/lustre/lustre-release/config.h:26:0: error: "CONFIG_LNET_MAX_PAYLOAD" redefined [-Werror]
#define CONFIG_LNET_MAX_PAYLOAD LNET_MTU
^
In file included from /usr/src/linux-headers-4.1.0-rc1+/include/linux/kconfig.h:4:0,
from <command-line>:0:
include/generated/autoconf.h:4174:0: note: this is the location of the previous definition
#define CONFIG_LNET_MAX_PAYLOAD 1048576
^
cc1: all warnings being treated as errors
scripts/Makefile.build:258: recipe for target '/home/king/lustre/lustre-release/libcfs/libcfs/linux/linux-tracefile.o' failed

Issue Links

• is related to: LU-5628 Dealing with kernels that have lustre...
• is related to: LU-6215 Sync Lustre external tree with lustre...

Comments

[Oleg Drokin]

The problem at hand is you probably have lustre configured i nthe kernel as a module or something, and this is not supported due to all sort of symbol clases, I suspect this is just a tip of the iceberg you are seeing here.

If you want to build out of tree lustre, the in-tree lustre client should be disabled.

[James A Simmons]

Yep, its the tip of the iceberg. If you want to build the intel branch against 4.1-rc1 you will a bunch more patches just to make it work. See LU-6215 for details about that work.

[James A Simmons]

I have submitted a bunch of patches for Ubuntu15 support. Only thing left is handle filldir_t api changes and generic_file_aio_XX changes.

[James A Simmons]

I have submitted all the patches needed to support Ubuntu15 now. With those patches also kernels up to 4.0 are supported.

Colin do you have a gerrit account so I can add you to review the patches needed.

[James A Simmons]

The need the following patches applied to master to run on Ubuntu15:

http://review.whamcloud.com/#/c/14598
http://review.whamcloud.com/#/c/14669
http://review.whamcloud.com/#/c/14683
http://review.whamcloud.com/#/c/14681
http://review.whamcloud.com/#/c/15028
http://review.whamcloud.com/#/c/14624

[James A Simmons]

Only one patch needed to support Ubuntu15 - http://review.whamcloud.com/#/c/15028

[James A Simmons]

All patches for Ubuntu15 support have landed. This ticket reported the same problems as LU-5628 so it can be now closed as a duplicate.

[Peter Jones]

ok - thanks James