[LU-18951] remove llog params records when erasing filesystem

• Type: Improvement
• Resolution: Fixed
• Priority: Major
• Fix Version/s: Lustre 2.18.0
• Affects Version/s: Lustre 2.15.6
• Labels: llnl topllnl
• Severity: 3
• Assignee: Mikhail Pershin
• Reporter: Gian-Carlo Defazio

Description

For an MGT that is used for many short-lived filesystems in which params are set with "lctl set_param -P", the params llog contains all previous commands and they are replayed for all subsequent file systems.

Could "lctl erase_lcfg <fsname>" also remove the entries for <fsname> in the params log?
We currently use "lctl llog_print params" then find the entries for the filesystem to erase and remove them with "lctl llog_cancel".

Issue Links

• is related to: LU-17691 add interface to deregister file system/targets on MGS