Looks like a pool creation request to the mon was sent but not complete:

(Pdb) 
> /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/storage/linux/ceph.py(2163)is_request_complete()
-> for rid in states.keys():
(Pdb) l
2158        Returns True if a similair request has been completed
2159 
2160        @param request: A CephBrokerRq object
2161        """
2162        states = get_request_states(request, relation=relation)
2163 ->     for rid in states.keys():
2164            if not states[rid]['complete']:
2165                return False
2166 
2167        return True
2168 
(Pdb) states
{'mon:15': {'complete': False, 'sent': True}}



(Pdb) where
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/config-changed(750)<module>()
-> hooks.execute(sys.argv)
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/core/hookenv.py(963)execute()
-> self._hooks[hook_name]()
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/hardening/harden.py(93)_harden_inner2()
-> return f(*args, **kwargs)
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/config-changed(261)config_changed()
-> _config_changed()
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/openstack/utils.py(1910)wrapped_f()
-> pre_restarts_wait_f)
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/core/host.py(837)restart_on_change_helper()
-> r = lambda_f()
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/openstack/utils.py(1904)<lambda>()
-> (lambda: f(*args, **kwargs)),
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/config-changed(231)_config_changed()
-> mon_relation(r_id, unit)
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/config-changed(374)mon_relation()
-> _mon_relation()
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/openstack/utils.py(1910)wrapped_f()
-> pre_restarts_wait_f)
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/core/host.py(837)restart_on_change_helper()
-> r = lambda_f()
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/openstack/utils.py(1904)<lambda>()
-> (lambda: f(*args, **kwargs)),
  /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/config-changed(290)_mon_relation()
-> if is_request_complete(rq, relation='mon'):
> /var/lib/juju/agents/unit-ceph-radosgw-0/charm/hooks/charmhelpers/contrib/storage/linux/ceph.py(2163)is_request_complete()
-> for rid in states.keys():

(Pdb) request.__dict__
{'request_id': '6b4eb3fa-0b17-11ec-8cfe-fa163e92b932', 'ops': [{'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max
-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.buckets.data', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 20, 'op': 'create-pool', 'compression-mode': None, '
compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-names
pace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'defau
lt.rgw.control', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool
', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd'
: None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.data.root', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 
0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': Non
e, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 
'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.gc', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None
, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max
-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.log', 'compression-min-bl
ob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': 
None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': Non
e, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.intent-log', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compress
ion-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': No
ne}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': No
ne, 'name': 'default.rgw.meta', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirrori
ng-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min
-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.otp', 'compression-min-blob-size': None, 'pg_num': None, '
weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-
ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd
': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.usage', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob
-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replic
as': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.users.keys', 
'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-m
in-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compress
ion-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.users.email', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'cre
ate-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression
-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objec
ts', 'max-bytes': None, 'name': 'default.rgw.users.swift', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app
-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objec
ts': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.users.uid', 'compression-min-bl
ob-size': None, 'pg_num': None, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': 
None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': Non
e, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': 'default.rgw.buckets.extra', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 1.0, 'op': 'create-pool', 'compr
ession-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio':
 None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'compression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes':
 None, 'name': 'default.rgw.buckets.index', 'compression-min-blob-size': None, 'pg_num': None, 'weight': 3.0, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 
'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob-size-ssd': None, 'compression-required-ratio': None}, {'group-namespace': None, 'replicas': 3, 'max-objects': None, 'com
pression-min-blob-size-ssd': None, 'compression-algorithm': None, 'compression-max-blob-size-hdd': None, 'group': 'objects', 'max-bytes': None, 'name': '.rgw.root', 'compression-min-blob-size': None, 'pg_num': N
one, 'weight': 0.1, 'op': 'create-pool', 'compression-mode': None, 'compression-max-blob-size': None, 'app-name': 'rgw', 'rbd-mirroring-mode': 'pool', 'compression-min-blob-size-hdd': None, 'compression-max-blob
-size-ssd': None, 'compression-required-ratio': None}], 'api_version': 1}