Hi, Weird thing happened with my ceph. I've got nice nightly scripts (bash scripts) for making backups, snapshots, cleaning up etc... Starting from my last upgrade to ceph v19.2.2 my scripts hang during execution. The rbd map and rbd unmap commands doesn't return to the prompt. So my script invoces a command like "cephadm shell -- rbd --pool libvirt-pool map --read-only --image CmsrvXCH2-SWAP@snap_4" but my script doesn't continue because the rbd map command never quits. I've also tried it myself. After killing my script a few times, I saw several images being mapped. So let's unmap them. This happened... root@hvs001:/# rbd unmap /dev/rbd0 ^C root@hvs001:/# rbd unmap /dev/rbd1 ^C The devices aren't mounted so the unmapping isn't blocked. Strangely enough after activating the unmap command, the device is removed from the /dev but I still have to do a ^C to return to the shell... Do I have an issue with my ceph cluster? Has anybody experienced something similar? Should I report a bug? Greetings, Dominique.