[LU-17691] add interface to deregister file system/targets on MGS

• Type: Improvement
• Resolution: Fixed
• Priority: Major
• Affects Version/s: Lustre 2.15.4
• Labels: llnl
• Severity: 3
• Assignee: Peter Jones
• Reporter: Olaf Faaland

Description

When one starts a target with the writeconf option, it registers with the MGS, resulting in the creation of config llog files.

In the case of an MGS which is separate from MDT0, and shared among multiple file systems, those config logs will accumulate.

As far as I can tell, there is no mechanism for removing the relevant config llog files when a file system, and all its targets, are destroyed.

First question, am I correct that there is no such mechanism now?

 

(edited later: I was mistaken, Andreas pointed out that there is a command for deleting the config llog files, "lctl erase_lcfg FSNAME" which is run on the MGS to delete all of the config logs for FSNAME. )

Issue Links

• is related to: LU-16722 MGS config log restructuring and redundancy