[LU-13028] LNet Discovery: toggling discovery on/off is not handled properly

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Fix Version/s: Lustre 2.14.0
• Severity: 3
• Assignee: Amir Shehata (Inactive)
• Reporter: Amir Shehata (Inactive)

Description

• When a peer goes from discovery on to discovery off, it's possible that its NIs change, such that the list of NIs local to the node are no longer valid.
  • Before turning off discovery send a broadcast to all peers with the new status
  • When a node receives a peer's state with discovery off. It should just delete the existing peer
    • If the peer is being used for as a gateway, then allocate a new peer for the route
  • When sending to a peer fails, it should be flagged for rediscovery

Issue Links

• is related to: LU-12312 sanity-sec: test_31: 'network' mount option cannot be taken into account