When upgrading Ceph cluster from version 19.2.4 to 19.2.6 using cephadm, an issue occurred with encrypted OSDs. 2026-09-02 10:53:28,494 7f24e08141c0 DEBUG Determined image: 'quay.io/ceph/ceph@sha256:9217c31b7a5a900688d485adca40dd0c5c365008c15dd2c6429dfc888a9f5089' 2026-09-02 10:53:28,501 7f24e08141c0 INFO Reconfig daemon osd.36 ... 2026-09-02 10:53:29,885 7f24e08141c0 INFO Stopping osd.36 to update osd_key bluestore label 2026-09-02 10:53:31,670 7f24e08141c0 INFO Opening osd.36 with crypsetup 2026-09-02 10:53:33,955 7f24e08141c0 INFO Non-zero exit code 5 from /usr/bin/podman run --rm --ipc=host --stop-signal=SIGTERM --net=host --entrypoint /tmp/cryptsetup_action.sh --privileged --group-add=disk --init -e CONTAINER_IMAGE=quay.io/ceph/ceph@sha256:9217c31b7a5a900688d485adca40dd0c5c365008c15dd2c6429dfc888a9f5089 -e NODE_NAME=k08r06cph03 -v /dev:/dev -v /tmp/cephadm-osd-36-rotate-helper.sh:/tmp/cryptsetup_action.sh quay.io/ceph/ceph@sha256:9217c31b7a5a900688d485adca40dd0c5c365008c15dd2c6429dfc888a9f5089 2026-09-02 10:53:33,956 7f24e08141c0 INFO /usr/bin/podman: stderr Cannot use device /dev/ceph-d1270182-40c9-49c8-9a52-f29d0475aeba/osd-block-80ae3d20-07df-4db5-96b6-2ad575a592ad which is in use (already mapped or mounted). 2026-09-02 10:53:33,956 7f24e08141c0 ERROR ERROR: Got error rotating osd keyring while using cryptsetup tool Out: Err:Cannot use device /dev/ceph-d1270182-40c9-49c8-9a52-f29d0475aeba/osd-block-80ae3d20-07df-4db5-96b6-2ad575a592ad which is in use (already mapped or mounted). The issue did not occur on all hosts in the cluster (fortunately, it was a test env), but it affected all OSDs on affected host. After error occurred OSDs remained in a down state and had to be up manually. After several attempts, the update was successfully completed, but we had to rotate the OSD keyrings ourselves. A few hours latter when monmap was changed and cephadm scheduled a reconfig this problem happened again, on 2 out of 4 nodes of the cluster all osds goes down due to cephadm reconfig and this same error: "Cannot use device... which is in use (already mapped or mounted)". Has anyone encountered similar problems? Regards Eugeniusz P