[LU-2525] Add asynchronous flocks

• Status: Open
• Project: Lustre
• Fix Version/s: Lustre 2.16.0
• Type: Improvement
• Priority: Critical
• Reporter: Andriy Skulysh
• Assignee: Andriy Skulysh
• Resolution: Unresolved
• Labels: bgti, patch

Description

lockd expects asynchronous file locking of underlay FS

Comments

[Andriy Skulysh]

patch: http://review.whamcloud.com/4889

[Andriy Skulysh]

There is another asynchronous lock implementation https://bugzilla.lustre.org/show_bug.cgi?id=14080
I wonder why it is not merged yet.

It is simpler. It returns to a caller after receiving reply from a server.
It uses ldlm_lock_decref_and_cancel to cancel pending lock.
I suppose it isn't accurate because it cancels lock on the server on "lock not found" without any check if it was merged with another lock.

[Andriy Skulysh]

Xyratex-bug-id: MRP-656

[Cliff White (Inactive)]

Rebased patch to latest master, repushed for retest.

[James A Simmons]

How can I go about testing this patch?

[Gerrit Updater]

Fan Yong ([e-mail]) uploaded a new patch: http://review.whamcloud.com/22247
Subject: LU-2525 ldlm: avoid reordered async flock lock and unlock
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 19c4e49751a36afb4c8be4f97ed38e959c80c90f

[Peter Jones]

We can work through the residual issues to get this landed to master once 2.10 opens for features

[Gerrit Updater]

Elena Gryaznova ([e-mail]) uploaded a new patch: http://review.whamcloud.com/22953
Subject: LU-2525 tests: specify the set of tests to be run
Project: fs/lustre-release
Branch: master
Current Patch Set: 1
Commit: 2dfe93be64aab23db18f0f711180258f60694614