[LU-3296] fs/lustre/mdt/*/md_stats not showing any stats after remount

• Type: Bug
• Resolution: Duplicate
• Priority: Minor
• Affects Version/s: Lustre 2.4.0
• Severity: 3
• Assignee: WC Triage
• Reporter: Robert Read (Inactive)

Description

I noticed that the md_stats proc file was empty, although there was activity on the filesystem and exports/*/stats contained several stats and were being updated.

I unmounted and remounted the fs, no change.

I rebooted, and md_stats contained usual operation stats data.

Then remounted the mdt, and md_stats stayed empty again.

Also, fs/lustre/mdt/*/stats is empty, and remained empty after a reboot and remounts.

My normal procedure for creating a lustre target does do a remount after the initial registration step, so it's possible this only occurs after remounting the mdt.

Issue Links

• duplicates: LU-2979 sanity 133a: proc counter for mkdir on mds1 was not incremented
• is related to: LU-3300 Restore missing proc information for LMT