Comment 8 for bug 1847822

The ceph packages in queens-proposed fixes this issue

Some details on different nodes

On ceph-mon node:

ubuntu@juju-590627-246395-0:~$ apt-cache policy ceph
ceph:
  Installed: 12.2.12-0ubuntu0.18.04.4
  Candidate: 12.2.12-0ubuntu0.18.04.4
  Version table:
 *** 12.2.12-0ubuntu0.18.04.4 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     12.2.12-0ubuntu0.18.04.3 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
     12.2.12-0ubuntu0.18.04.2 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     12.2.4-0ubuntu1 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
ubuntu@juju-590627-246395-0:~$ ceph fs authorize ceph-fs client.foo / rw
[client.foo]
 key = AQCiAeZd+PTmHhAAh2VDxBu1JJR7qr5lfLavaw==
ubuntu@juju-590627-246395-0:~$ ceph fs authorize ceph-fs client.bar /bar rw
[client.bar]
 key = AQC2COZdxTytDxAAtY3oVcjK8XqzlFf0oRlzWQ==

On ceph-fs node:

ubuntu@juju-590627-246395-7:~$ apt-cache policy ceph
ceph:
  Installed: 12.2.12-0ubuntu0.18.04.4
  Candidate: 12.2.12-0ubuntu0.18.04.4
  Version table:
 *** 12.2.12-0ubuntu0.18.04.4 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-proposed/main amd64 Packages
        100 /var/lib/dpkg/status
     12.2.12-0ubuntu0.18.04.3 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic-updates/main amd64 Packages
     12.2.12-0ubuntu0.18.04.2 500
        500 http://security.ubuntu.com/ubuntu bionic-security/main amd64 Packages
     12.2.4-0ubuntu1 500
        500 http://nova.clouds.archive.ubuntu.com/ubuntu bionic/main amd64 Packages
ubuntu@juju-590627-246395-7:~$ sudo ceph-fuse -c ceph.conf --id foo -k client.foo.keyring mnt
ceph-fuse[4198]: starting ceph client
2019-12-03 07:01:22.855304 7fb6a87f6500 -1 init, newargv = 0x559f708262e0 newargc=9
ceph-fuse[4198]: starting fuse
ubuntu@juju-590627-246395-7:~$ ls mnt/
ubuntu@juju-590627-246395-7:~$ sudo mkdir mnt/bar
ubuntu@juju-590627-246395-7:~$ ls mnt
bar