Verified the BZ below are the results Requirement: kernel-4.18.0-207.el8 or newer Verified on RHEL 8.3 $ uname -a Linux depressa002 4.18.0-221.el8.x86_64 #1 SMP Thu Jun 25 20:58:19 UTC 2020 x86_64 x86_64 x86_64 GNU/Linux [root@depressa002 ~]# sudo blockdev --getro /dev/rbd0 1 [root@depressa002 ~]# sudo blockdev --setrw /dev/rbd0 blockdev: ioctl error on BLKROSET: Read-only file system
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: Red Hat Ceph Storage 4.2 Security 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-2021:0081