Bug 2180124 - backport courteous server code for nfsd
Summary: backport courteous server code for nfsd
Keywords:
Status: VERIFIED
Alias: None
Product: Red Hat Enterprise Linux 9
Classification: Red Hat
Component: kernel
Version: 9.2
Hardware: Unspecified
OS: Unspecified
unspecified
medium
Target Milestone: rc
: ---
Assignee: Jeff Layton
QA Contact: JianHong Yin
Michal Stubna
URL:
Whiteboard:
Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2023-03-20 18:46 UTC by Jeff Layton
Modified: 2023-08-07 16:15 UTC (History)
5 users (show)

Fixed In Version: kernel-5.14.0-306.el9
Doc Type: Enhancement
Doc Text:
.NFS server now implements courteous server code for `nfsd` This update introduces the implementation of "courteous server" code for `nfsd` in the RHEL kernel NFS server. With this new feature, the NFS server avoids revoking leases for clients that have lost contact with the server for an extended period, as long as there is no conflicting access while the client is out of contact.
Clone Of:
Environment:
Last Closed:
Type: Bug
Target Upstream Version:
Embargoed:

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Links
System ID Private Priority Status Summary Last Updated
Gitlab redhat/centos-stream/src/kernel centos-stream-9 merge_requests 2209 0 None opened backport of courteous server code for nfsd 2023-04-10 10:10:33 UTC
Red Hat Issue Tracker RHELPLAN-152455 0 None None None 2023-03-20 18:48:52 UTC

Description Jeff Layton 2023-03-20 18:46:47 UTC 
The kernel nfs server recently got an implementation of "courteous server" code for nfsd. With that, the server can avoid revoking leases for clients that lose contact with the server for an extended period of time, if there is no conflicting access during that period.

Backport this new feature for RHEL9.
Comment 1 Jeff Layton 2023-03-20 19:50:55 UTC 
Testing this feature can be somewhat difficult, but there are some tests in pynfs that were recently added for this (most of the tests that were added in st_courtesy.py).
Comment 17 Jeff Layton 2023-07-12 12:22:06 UTC 
Draft release note / doc text:

"The RHEL kernel NFS server has gained the ability to be more "courteous" and will now avoid revoking leases for clients that have lost contact with the server for an extended period, as long as there is no conflicting access while the client is out of contact."
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