[ceph-users] cephadm adoption failed

Hello, I'm trying to adopt an existing cluster. The cluster consists of 5 converged (mon, mgr, osd, mds on same host) servers running Octopus 15.2.4. I've followed the guide: https://docs.ceph.com/docs/octopus/cephadm/adoption/ Adopting the first mon I've got the following problem: root@mulberry:/home/toga# cephadm adopt --style legacy --name mon.mulberry INFO:cephadm:Pulling latest docker.io/ceph/ceph:v15 container... INFO:cephadm:Stopping old systemd unit ceph-mon@mulberry... INFO:cephadm:Disabling old systemd unit ceph-mon@mulberry... INFO:cephadm:Moving data... INFO:cephadm:Chowning content... Traceback (most recent call last): File "/usr/sbin/cephadm", line 4761, in <module> r = args.func() File "/usr/sbin/cephadm", line 1162, in _default_image return func() File "/usr/sbin/cephadm", line 3241, in command_adopt command_adopt_ceph(daemon_type, daemon_id, fsid); File "/usr/sbin/cephadm", line 3387, in command_adopt_ceph call_throws(['chown', '-c', '-R', '%d.%d' % (uid, gid), data_dir_dst]) File "/usr/sbin/cephadm", line 844, in call_throws out, err, ret = call(command, **kwargs) File "/usr/sbin/cephadm", line 784, in call message = message_b.decode('utf-8') UnicodeDecodeError: 'utf-8' codec can't decode byte 0xc3 in position 1023: unexpected end of data In `cephadm ls` the old mon is gone and the new is present: { "style": "cephadm:v1", "name": "mon.mulberry", "fsid": "74307e84-e1fe-4706-8312-fe47703928a1", "systemd_unit": &quot;ceph-74307e84-e1fe-4706-8312-fe47703928a1(a)mon.mulberry&quot;erry", "enabled": false, "state": "stopped", "container_id": null, "container_image_name": null, "container_image_id": null, "version": null, "started": null, "created": null, "deployed": null, "configured": null } But there is no container running. How can I resolve this? Regards, Tobias