[LU-12126] The lustre test suite falls over when running with a modern LNet DLC configuration with o2iblnd

• Type: Bug
• Resolution: Unresolved
• Priority: Critical
• Affects Version/s: Lustre 2.12.3
• Environment: Setting up any test suite to run test that use a post lustre 2.7 DLC configuration with ko2iblnd.
• Severity: 3
• Assignee: Amir Shehata (Inactive)
• Reporter: James A Simmons

Description

Currently many of the lustre test suites like lustre-lfsck just fall over when attempting to run in my test bed. This is due to me running with a ko2iblnd DLC MultiRail configuration. The test suite assumes a tcp setup using modprobe.conf for ksocklnd only. Currently when running I see failures like:

rmmod: ERROR: Module ko2iblnd is in use

rmmod: ERROR: Module lnet is in use by: ko2iblnd

rmmod: ERROR: Module ko2iblnd is in use

rmmod: ERROR: Module libcfs is in use by: lnet ko2iblnd

modules unloaded.

Stopping clients: ninja82 /lustre/lustre (opts:-f)

Also lustre_rmmod will completely fail with an o2iblnd LNet DLC multi-rail configuration.

Simply attempting to execute lustre_rmmod with a system using lnetctl to set things up will show these problems.