Comment 4 for bug 1767739

Hello Chris, yes, absolutely I referenced the previous post but I am most definitely meaning "source".
My config goes as follow:

maas-region:~$ juju config ceph-osd
application: ceph-osd
charm: ceph-osd
settings:
  aa-profile-mode:
    value: enforce
  autotune:
    value: false
  availability_zone:
    source: unset
  bluestore:
    value: true
  bluestore-block-db-size:
    value: 0
  bluestore-block-wal-size:
    value: 0
  bluestore-db:
    source: unset
  bluestore-wal:
    source: unset
  ceph-cluster-network:
    source: unset
  ceph-public-network:
    source: unset
  config-flags:
    source: unset
  crush-initial-weight:
    source: unset
  customize-failure-domain:
    value: true
  ephemeral-unmount:
    source: unset
  harden:
    source: unset
  ignore-device-errors:
    value: false
  key:
    source: unset
  loglevel:
    value: 1
  max-sectors-kb:
    value: 1.048576e+06
  nagios_context:
    value: dsi-r1
  nagios_servicegroups:
    value: ""
  osd-devices:
    value: /dev/sdb /dev/sdc /dev/sdd /dev/sde /dev/sdf /dev/sdg /dev/sdh /dev/sdi
      /dev/sdj /dev/sdk /dev/sdl /dev/sdm /dev/sdn /dev/sdo /dev/sdp /dev/sdq /dev/sdr
      /dev/sds /dev/sdt /dev/sdu /dev/sdv /dev/sdw /dev/sdx /dev/sdy /dev/sdz
  osd-encrypt:
    value: true
  osd-format:
    value: xfs
  osd-journal:
    value: ""
  osd-journal-size:
    value: 1024
  osd-max-backfills:
    source: unset
  osd-recovery-max-active:
    source: unset
  osd-reformat:
    source: unset
  prefer-ipv6:
    value: false
  source:
    value: cloud:xenial-queens
  sysctl:
    value: '{ kernel.pid_max : 2097152, vm.max_map_count : 524288, kernel.threads-max:
      2097152, vm.vfs_cache_pressure: 1, vm.swappiness: 1 }'
  use-direct-io:
    value: true
  use-syslog:
    value: false