Bug 1783554

Summary:	Fix copy_file_range return value in case of same-file copy on NFS
Product:	Red Hat Enterprise Linux 7	Reporter:	J. Bruce Fields <bfields>
Component:	kernel	Assignee:	J. Bruce Fields <bfields>
kernel sub component:	NFS	QA Contact:	JianHong Yin <jiyin>
Status:	CLOSED ERRATA	Docs Contact:
Severity:	high
Priority:	unspecified	CC:	chorn, fweimer, marko.bevc, ofalk, rob.townley, threepassionategamer, vcnjhenbql, xzhou, yoyang
Version:	7.7
Target Milestone:	rc
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	kernel-3.10.0-1148.el7	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2020-09-29 21:04:54 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:
Bug Depends On:
Bug Blocks:	1840284

Description J. Bruce Fields 2019-12-13 21:44:00 UTC

The NFS protocol doesn't allow COPY to and from the same file, but the copy_file_range() system call does allow that.  We need to return a reasonable error in that case.  Upstream NFS is returning EOPNOTSUPP, so the vfs falls back to splice.  In RHEL7 that fallback is being removed to fix bug 1736794, so we need to return ENOSYS.

Comment 8 Jan Stancek 2020-06-04 06:41:51 UTC

Patch(es) committed on kernel-3.10.0-1148.el7

Comment 13 J. Bruce Fields 2020-06-24 16:03:40 UTC

*** Bug 1840284 has been marked as a duplicate of this bug. ***

Comment 14 Marko Bevc 2020-06-24 16:19:51 UTC

Thanks, since 3.10.0-1127.13.1.el7 is repos, do we have an ETA or repo which we can try patched kernel-3.10.0-1148.el7 from? Thanks!

Comment 15 Marko Bevc 2020-06-30 17:34:27 UTC

Does anyone have any feedback on progress on this one? Thanks!

Comment 16 Christian Horn 2020-07-01 01:29:49 UTC

Marko, the proper errata meant for production systems 
should become available with the release of RHEL7.9GA.

Comment 17 Marko Bevc 2020-07-01 12:20:04 UTC

Do you have information if this is going to make it to CentOS Streams before next minor release? Trying to explore options to avoid 6 months wait time as it's blocking upgrading now. Thanks!

Comment 18 Christian Horn 2020-07-02 05:08:23 UTC

Customers with RHEL subscription and access to the rhel-7-server-htb-rpms 
channel (not sure what needs to be full filled to get that) should have 
access to kernel-3.10.0-1149.el7 and kernel-3.10.0-1152.el7 which would
also include the patch (but we would not recommend these for production 
systems).

Sorry, unsure about the centos stream release policy.  While Fedora bug-
zilla is nicely integrated with RHEL bugzilla, it's hard for me to 
identify which efforts are underway for centos stream.

Indeed, normal Centos minor releases are typically weeks after the 
upstream/rhel release.

Comment 20 Marko Bevc 2020-09-29 12:23:51 UTC

Nice, any news on when GA date is scheduled for?

Comment 21 errata-xmlrpc 2020-09-29 21:04:54 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-2020:4060