[LU-3731] Improve understanding of LustreError for "not available for connect (no target)" to be better understood by users

• Type: Improvement
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.5.0
• Affects Version/s: Lustre 2.3.0, Lustre 2.4.0, Lustre 2.5.0
• Assignee: Bobbie Lind (Inactive)
• Reporter: Bobbie Lind (Inactive)

Description

When running in an HA environment servers and clients can report a LustreError of no target available. This error is technically correct depending on the server it is reported on. If it is reported on one of the failover pairs but the OST is mounted on the other then this "Error" is not one that requires action.

This error, however, does need to be addressed if no servers are able to mount the target.

Making this error a little more user friendly will help users understand when it is an error that needs to be addressed and when it can be thought of as a warning.