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 /]#
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 /]#
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