Bug 2180124

Summary:	backport courteous server code for nfsd
Product:	Red Hat Enterprise Linux 9	Reporter:	Jeff Layton <jlayton>
Component:	kernel	Assignee:	Jeff Layton <jlayton>
kernel sub component:	NFS	QA Contact:	JianHong Yin <jiyin>
Status:	CLOSED ERRATA	Docs Contact:	Michal Stubna <mstubna>
Severity:	medium
Priority:	unspecified	CC:	gfialova, jiyin, mstubna, nfs-team, xzhou, yieli, yoyang
Version:	9.2	Keywords:	FutureFeature, Triaged
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
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, provided that there is no conflicting access while the client is out of contact.	Story Points:	---
Clone Of:		Environment:
Last Closed:	2023-11-07 08:42:54 UTC	Type:	Bug
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

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."

Comment 22 errata-xmlrpc 2023-11-07 08:42:54 UTC

Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (Important: kernel security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHSA-2023:6583