Bug 2053652

Summary:	diff-iterate include_parent functionality is broken in fast-diff mode
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Ilya Dryomov <idryomov>
Component:	RBD	Assignee:	Ilya Dryomov <idryomov>
Status:	CLOSED ERRATA	QA Contact:	Preethi <pnataraj>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	5.0	CC:	ceph-eng-bugs, ceph-qe-bugs, tserlin
Target Milestone:	---
Target Release:	5.1
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:	ceph-16.2.7-57.el8cp	Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2022-04-04 10:24:10 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:

Comment 6 Preethi 2022-02-16 15:49:17 UTC

IIlya, Am seeing the below issue while verifying with latest build. 

[ceph: root@magna031 /]# rbd create --size 20M --thick-provision foo
Thick provisioning: 100% complete...done.
[ceph: root@magna031 /]# rbd snap create foo@snap
Creating snap: 100% complete...done.
[ceph: root@magna031 /]# rbd snap protect foo@snap
[ceph: root@magna031 /]# rbd clone foo@snap bar
[ceph: root@magna031 /]# rbd diff foo
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna031 /]# rbd diff --whole-object foo
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna031 /]# rbd diff bar
2022-02-16T15:18:19.795+0000 7fcd3cff9700 -1 librbd::cache::ParentCacheObjectDispatch: 0x7fcd4800f6e0 operator(): Parent cache fail to connect RO daeomn.
2022-02-16T15:18:19.811+0000 7fcd3cff9700 -1 librbd::cache::ParentCacheObjectDispatch: 0x7fcd4800f6e0 operator(): Parent cache fail to register client.
2022-02-16T15:18:19.811+0000 7fcd3cff9700 -1 librbd::cache::ParentCacheObjectDispatch: 0x7fcd4800f6e0 handle_register_client: Parent cache register fails.
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna031 /]# rbd diff --whole-object bar
2022-02-16T15:18:39.409+0000 7fad56ffd700 -1 librbd::cache::ParentCacheObjectDispatch: 0x7fad6c00f740 operator(): Parent cache fail to connect RO daeomn.
2022-02-16T15:18:39.409+0000 7fad56ffd700 -1 librbd::cache::ParentCacheObjectDispatch: 0x7fad6c00f740 operator(): Parent cache fail to register client.
2022-02-16T15:18:39.409+0000 7fad56ffd700 -1 librbd::cache::ParentCacheObjectDispatch: 0x7fad6c00f740 handle_register_client: Parent cache register fails.


[ceph: root@magna031 /]# ceph version
ceph version 16.2.7-63.el8cp (bf7cd8de848e792908ac129b7bfe90e12a06549b) pacific (stable)
[ceph: root@magna031 /]#

Comment 8 Preethi 2022-02-17 06:35:33 UTC

IIlya, Yes its working in new cluster- below steps followed 

[ceph: root@magna021 /]# ceph version
ceph version 16.2.7-60.el8cp (34dbdb659b7a1be34b84aaa825e7cbccc3170aef) pacific (stable)
[ceph: root@magna021 /]# 



[ceph: root@magna021 /]# rbd create --size 20M --thick-provision test/image1
Thick provisioning: 100% complete...done.


[ceph: root@magna021 /]# rbd snap create test/image1@snap
Creating snap: 100% complete...done.

[ceph: root@magna021 /]# rbd snap protect test/image1@snap 

[ceph: root@magna021 /]# rbd clone test/image1@snap test/bar
.
[ceph: root@magna021 /]# rbd diff test/image1
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna021 /]# rbd diff --whole-object test/image1
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna021 /]# rbd diff test/bar
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna021 /]# rbd diff --whole-object test/bar   
Offset    Length   Type
0         4194304  data
4194304   4194304  data
8388608   4194304  data
12582912  4194304  data
16777216  4194304  data
[ceph: root@magna021 /]#

Comment 10 errata-xmlrpc 2022-04-04 10:24:10 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 (Moderate: Red Hat Ceph Storage 5.1 Security, Enhancement, and Bug Fix 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-2022:1174