[LU-3635] Coordinator agent llog is badly accessed

• Type: Technical task
• Resolution: Fixed
• Priority: Blocker
• Fix Version/s: Lustre 2.5.0
• Affects Version/s: Lustre 2.5.0
• Labels: HSM patch
• Assignee: James Nunez (Inactive)
• Reporter: Aurelien Degremont (Inactive)

Description

Two different handlers were setup to access Coordinator agent LLOG.
One for coordinator access and one for /proc accesses.
Both tried to clean the LLOG content when closing it, leading to
crashes: ASSERT(inode->i_nlink > 0)