[lustre-discuss] build help with 5.15 kernel

Hebenstreit, Michael michael.hebenstreit at intel.com
Mon Jan 3 07:26:37 PST 2022 

Thanks for the pointers.

-----Original Message-----
From: Degremont, Aurelien <degremoa at amazon.fr> 
Sent: Monday, January 3, 2022 3:35 AM
To: Hebenstreit, Michael <michael.hebenstreit at intel.com>; lustre-discuss at lists.lustre.org
Subject: Re: [lustre-discuss] build help with 5.15 kernel

Hello Michael

Lustre 2.12.8 does not support Linux 5.15 More recent Lustre versions support up to Linux 5.11 but not further.
See these tickets for 5.12 and 5.14 support.
https://jira.whamcloud.com/browse/LU-14651
https://jira.whamcloud.com/browse/LU-15220

It is possible to manually backport patches to support some 5.x kernels with 2.12 but this is not trivial. 

I don't know what is your current project but it will be much easier for you if you can target an older Linux kernel and focus on kernel used by major distro. Ubuntu 20.04 is using 5.11 by example.


Aurélien


Le 31/12/2021 01:34, « lustre-discuss au nom de Hebenstreit, Michael via lustre-discuss » <lustre-discuss-bounces at lists.lustre.org au nom de lustre-discuss at lists.lustre.org> a écrit :

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    Some additional info. I extracted the make command and ran it against the 2 kernel versions. Old kernel works, new kernel fails

    $ make _module_/tmp/lustre-2.12.5/build LUSTRE_KERNEL_TEST=conftest.i LDFLAGS=' LD=/usr/bin/ld -m elf_x86_64' CC=gcc   -f /tmp/lustre-2.12.5/build/Makefile LUSTRE_LINUX_CONFIG=/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//.config LINUXINCLUDE='-I/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//arch/x86/include -Iinclude -Iarch/x86/include/generated -I/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//include -Iinclude2 -I/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//include/uapi -Iinclude/generated -I/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//include/uapi -Iinclude/generated/uapi -include /admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib//include/linux/kconfig.h' -o tmp_include_depends -o scripts -o include/config/MARKER -C /admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib/ EXTRA_CFLAGS='-Werror-implicit-function-declaration -g -I/tmp/lustre-2.12.5/libcfs/include -I/tmp/lustre-2.12.5/lnet/include -I/tmp/lustre-2.12.5/lustre/include/uapi -I/tmp/lustre-2.12.5/lustre/include -Wno-format-truncation -Wno-stringop-truncation -Wno-stringop-overflow' M=/tmp/lustre-2.12.5/build
    make: Entering directory '/global/panfs01/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib'
      CC [M]  /tmp/lustre-2.12.5/build/conftest.o
      CPP [M] /tmp/lustre-2.12.5/build/conftest.i
    make: Leaving directory '/global/panfs01/admin/src/4.18.0-240.22.1.el8_3.crt6.x86_64.withib'

    $ touch /tmp/lustre-2.12.5/build/conftest.c
    $ make _module_/tmp/lustre-2.12.5/build LUSTRE_KERNEL_TEST=conftest.i LDFLAGS=' LD=/usr/bin/ld -m elf_x86_64' CC=gcc   -f /tmp/lustre-2.12.5/build/Makefile LUSTRE_LINUX_CONFIG=/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/.config LINUXINCLUDE='-I/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/arch/x86/include -Iinclude -Iarch/x86/include/generated -I/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/include -Iinclude2 -I/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/include/uapi -Iinclude/generated -I/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/arch/x86/include/uapi -Iarch/x86/include/generated/uapi -I/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/include/uapi -Iinclude/generated/uapi -include /global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64/include/linux/kconfig.h' -o tmp_include_depends -o scripts -o include/config/MARKER -C /global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64 EXTRA_CFLAGS='-Werror-implicit-function-declaration -g -I/tmp/lustre-2.12.5/libcfs/include -I/tmp/lustre-2.12.5/lnet/include -I/tmp/lustre-2.12.5/lustre/include/uapi -I/tmp/lustre-2.12.5/lustre/include -Wno-format-truncation -Wno-stringop-truncation -Wno-stringop-overflow' M=/tmp/lustre-2.12.5/build
    make: Entering directory '/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64'
    make: *** No rule to make target '_module_/tmp/lustre-2.12.5/build'.  Stop.
    make: Leaving directory '/global/panfs01/admin/src/5.15.0-spr.bkc.pc.1.21.0.x86_64'

    -----Original Message-----
    From: lustre-discuss <lustre-discuss-bounces at lists.lustre.org> On Behalf Of Hebenstreit, Michael via lustre-discuss
    Sent: Thursday, December 30, 2021 5:07 PM
    To: lustre-discuss at lists.lustre.org
    Subject: [lustre-discuss] build help with 5.15 kernel

    Hello

    I'm trying to build the Lustre 2.12.8 client on a 5.15 kernel and already failing in the configure step. Looks to me like something in the build process has changed. The failure occurs in configure line 14390. From the log:

    configure:14390: cp conftest.c build && make -d _module_/tmp/lustre-2.12.8/build LUSTRE_KERNEL_TEST=conftest.i LDFLAGS= LD=/usr/bin/ld -m elf_x86_64 CC=gcc -f
    make: *** No rule to make target '_module_/tmp/lustre-2.12.8/build'.  Stop.
    configure:14393: $? = 2

    For some reasons the construct "make -d _module_/${PWD} .." does no longer work (it works on same OS with 4.18 RH8.3 kernel). If I replace it with something like "make -d modules .." It works, modules are build, but the subsequent test for ${PWD}/conftest.i fails

    Any help appreciated
    Happy new year
    Michael

    ------------------------------------------------------------------------
    Michael Hebenstreit                 Senior Cluster Architect Intel Corporation, MS: RR1-105/H14  TSACG
    1600 Rio Rancho Blvd SE             Tel.:   +1 505-794-3144
    Rio Rancho, NM 87124
    UNITED STATES                       E-mail: michael.hebenstreit at intel.com


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