[LU-12426] Add option to disable lock expansion on all requests Created: 11/Jun/19  Updated: 09/Jul/21

Status: Open
Project: Lustre
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Improvement Priority: Minor
Reporter: Patrick Farrell (Inactive) Assignee: Patrick Farrell
Resolution: Unresolved Votes: 0
Labels: None

Issue Links:
Related
is related to LU-12550 automatic lockahead Open
Severity: 3
Rank (Obsolete): 9223372036854775807

 Description   

It has come up several times recently that I wanted to disable lock expansion on all requests to explore possible shared file performance issues.  This is not currently possible without modifying application codes, which is not always an option.

This is primarily for testing, but it may increase performance in some situations.  It would be nice to include this in a standard Lustre distribution so it's easy to test on real hardware.

 


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