When a user runs "lfs changelog_clear <mdt> <id> <endrec>" and <endec> and below changelog entries have already been cleared, the MDT reports the following warning on the console:

Failure to clear the changelog for user <id>: -22

and when a user runs the same command for an <id> that does not exist, the MDT reports the following on the console:

No entry for user <id> 

These don't represent a problem within Lustre and do not warrant a warning on the console.