[LU-984] Allocate sequences on MOUNT2 clients in replay_barrier()

• Type: Bug
• Resolution: Fixed
• Priority: Minor
• Affects Version/s: Lustre 2.1.0
• Severity: 3
• Assignee: Li Wei (Inactive)
• Reporter: Li Wei (Inactive)

Description

In order to avoid sequence file updates after a target is made
read-only, replay_barrier() creates a file in "MOUNT" on every client
node. This is not enough because the "MOUNT2" clients may also trigger
sequence file updates. First observed in ORI-448.