[LU-16378] Lose unregistered device that register again with new index

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.16.0
• Severity: 3
• Assignee: Cyril Bordage
• Reporter: Cyril Bordage

Description

When network is restarted, devices are unregistered and then registered again.

When a device registers using an index that is different from the previous one (before network was restarted), LNet ignores it. Consequently, this device stays with link in fatal state.