Comment 3 for bug 1774279

Reproduced:

2018-07-11 11:18:54 INFO juju-log client:5: Creating pool 'glance' (replicas=3)
2018-07-11 11:18:54 DEBUG client-relation-changed Error ERANGE: pg_num 200 size 3 would mean 1200 total pgs, which exceeds max 600 (mon_max_pg_per_osd 200 * num_in_osds 3)
2018-07-11 11:18:55 ERROR juju-log client:5: Command '['ceph', '--id', 'admin', 'osd', 'pool', 'create', 'glance', '200']' returned non-zero exit status 34.
2018-07-11 11:18:55 ERROR juju-log client:5: Unexpected error occurred while processing requests: {'api-version': 1, 'request-id': '2a919b75-84fc-11e8-ba20-fa163e7e0b1a', 'ops': [{'group': 'images', 'name': 'glance', 'weight': 5, 'replicas': 3, 'pg_num': None, 'group-namespace': None, 'op': 'create-pool'}]}