[LU-14165] llog_reader: Add debugging information for a corrupted llog catalog

• Type: Improvement
• Resolution: Unresolved
• Priority: Minor
• Assignee: Etienne Aujames
• Reporter: Etienne Aujames

Description

When I was working on LU-14158, I have done some changes on llog_reader to understand/debug llog catalog.

So I share my changes here, in case of someone is interested.

Te patches include the following changes:

• Compute/display the first and last index for a catalog
• Check if a catallog record index is in range
• Display records from the first index in catalog
• Check llh_count with the the llog header bitset
• In some cases corruption, display the valid records.
• Add a "print" function for changelog_user records

Issue Links

• is related to: LU-14098 LustreError: 19003:0:(osp_sync.c:350:osp_sync_declare_add()) logging isn't available, run LFSCK