[LU-8069] Allow remount to include "flock" and "localflock", as well as "lazystatfs" and "nolazystatfs"

• Type: Improvement
• Resolution: Unresolved
• Priority: Minor
• Affects Version/s: Lustre 2.8.0
• Labels: easy
• Environment: RHEL 7.2
• Business Value: 1
• Severity: 3
• Assignee: WC Triage
• Reporter: Faye Gibbins (Inactive)

Description

We needed to remount a lustre file system on all the clients with the additional "flock" option.
But this is not supported by lustre and we had to take each host out of our cluster to achieve it.
Andreas Dilger suggested I raise this as a bug here to get this fixed in ll_remount_fs().
Unfortunately I'm not able to attach a patch too.

Issue Links

• is related to: LU-17537 Ability to set localflock on a per-process/file basis
• is related to: LU-7759 umount hanging in modern distros when OST is unavailable
• is related to: LU-10885 enable flock by default