[LU-3211] Send unlink request to the parent MDT

• Type: Bug
• Resolution: Won't Fix
• Priority: Minor
• Affects Version/s: Lustre 2.5.0
• Severity: 3
• Assignee: Di Wang
• Reporter: Di Wang

Description

To simplify the recovery process, we will send the unlink request to the Master MDT, instead of remote MDT as in 2.4.