[LU-2907] Infiniband HW kernel modules of OFA builds not started at system boot

• Type: Story
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.4.0
• Affects Version/s: Lustre 2.4.0
• Labels: HB
• Assignee: Frank Heckes (Inactive)
• Reporter: Frank Heckes (Inactive)

Description

Symptom:
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
When provisioning test nodes with ofa builds (i.e. 'external' build of the kernel-ib based on Openfabrics OFED tarballs) based on rhel6 and compiled against kernel version 2.6.32-279, the initialization of the Infiniband interfaces (ib0, ib1,...) fails due to the fact the low level kernel Infiniband HW modules mlx4_core, mlx4_en are not loaded.

When loading the kernel-ib HW modules manually (modprobe mlx4_core,...) the interface are created and operational (i.e. connected to fabric, IP over IB works,...)

The kernel-ib RPM normally is going to be build with a set of startup-scripts (/etc/init.d/openibd and links in /etc/rc.d/*, chkconfig execution,...) to ensure that the Infiniband HW kernel modules are loaded during system start. These files/scripts are missing in the kernel-ib RPM.

Due to a installation conflict of the kernel-ib with openibd RPM for canonical distribution 'rhel5' the scripts/files were removed from the OFED kernel-ib SPEC file before creating them (rpmbuild) with help of the lbuild script. (See LU-388 for further details)

This conflict no longer exist since openib-<version>.rpm isn't part of rhel6 anymore. Additionally the functionality of initializing the Infiniband HW is gone, too, because openib RPM contain(ed) the necessary startup scripts:

rpm -qil --scripts -p openib-1.4.1-5.el5.noarch.rpm
warning: openib-1.4.1-5.el5.noarch.rpm: Header V3 DSA/SHA1 Signature, key ID 192a7d7d: NOKEY
Name : openib Relocations: (not relocatable)
Version : 1.4.1 Vendor: Scientific Linux
Release : 5.el5 Build Date: Wed 31 Mar 2010 12:39:27 AM PDT
Install Date: (not installed) Build Host: norob.fnal.gov
Group : System Environment/Base Source RPM: openib-1.4.1-5.el5.src.rpm
Size : 27021 License: GPL/BSD
Signature : DSA/SHA1, Wed 31 Mar 2010 12:52:50 PM PDT, Key ID b0b4183f192a7d7d
URL : http://www.openfabrics.org/
Summary : OpenIB Infiniband Driver Stack
Description :
User space initialization scripts for the kernel InfiniBand drivers
postinstall scriptlet (using /bin/sh):
if [ $1 = 1 ]; then
/sbin/chkconfig --add openibd
fi
preuninstall scriptlet (using /bin/sh):
if [ $1 = 0 ]; then
/sbin/chkconfig --del openibd
fi
/etc/ofed
/etc/ofed/fixup-mtrr.awk
/etc/ofed/openib.conf
/etc/rc.d/init.d/openibd
/etc/sysconfig/network-scripts/ifup-ib
/etc/udev/rules.d/90-ib.rules

The script (openidb) have been 'moved' to kernel-ib package for OFED version 1.5.*.

To overcome the situation the following code change in lustre-reviews/build/lbuild (inside loop beginning at line 1216; `for file in $(ls ${TOPDIR}/lustre/build/patches/ofed/*.patch); do´ )

if [ file =~ "${CANONICAL_TARGET}" ]
ed_fragment3="$ed_fragment3
$(cat $file)"
let n=$n+1
end

and rename of the ed - script (to remove packaging of openibd files and scripts) from

01-play-nice-with-RHEL5.ed
to
01-play-nice-with-rhel5.ed

is necessary. This will ensure that kernel-ib ofa-builds for rhel5 are created without openibd scripts, but make them available for rhel6 RPMs.

Issue Links

• is duplicated by: LU-2972 Execution conflict of OFED initialisation script