Created attachment 1645521 [details]
all.yml file

Description of problem:Ceph-Ansible is picking RBD volume when OSD auto discovery is set to True due to this site.yaml is getting failed.


Version-Release number of selected component (if applicable): 
Ceph version 14.2.4-24.el7cp (ca8a8d14ec42737621306723f03dc0fb958a4747) nautilus (stable)



How reproducible: Have a cluster with 3 nodes which has 9 OSDs, 3 MOns, 2 mgrs,

1 client, RGW, RBD and MDS installed.

Attached inventory log, all.yml and OSD.ymal files.
 
Steps to Reproduce:
1. Perform ceph-metrics and install dashboard on 3.3
2. trigger IOs on RBD using RBDbench
2. Upon scusseful installation. Perform upgrade from 3.3 to 4.0 
3. Install rolling_update.rml followed by site.yml. Observe the behaviour

Actual results: Site.yml fails with the below output:

   Traceback (most recent call last):
      File "/sbin/ceph-volume", line 9, in <module>
        load_entry_point('ceph-volume==1.0.0', 'console_scripts', 'ceph-volume')()
      File "/usr/lib/python2.7/site-packages/ceph_volume/main.py", line 38, in __init__
        self.main(self.argv)
      File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 59, in newfunc
        return f(*a, **kw)
      File "/usr/lib/python2.7/site-packages/ceph_volume/main.py", line 149, in main
        terminal.dispatch(self.mapper, subcommand_args)
      File "/usr/lib/python2.7/site-packages/ceph_volume/terminal.py", line 194, in dispatch
        instance.main()
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/main.py", line 40, in main
        terminal.dispatch(self.mapper, self.argv)
      File "/usr/lib/python2.7/site-packages/ceph_volume/terminal.py", line 194, in dispatch
        instance.main()
      File "/usr/lib/python2.7/site-packages/ceph_volume/decorators.py", line 16, in is_root
        return func(*a, **kw)
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/batch.py", line 320, in main
        self._get_strategy()
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/batch.py", line 303, in _get_strategy
        self.strategy = strategy.with_auto_devices(self.args, unused_devices)
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/strategies/bluestore.py", line 25, in with_auto_devices
        return cls(args, devices)
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/strategies/bluestore.py", line 20, in __init__
        self.validate_compute()
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/strategies/strategies.py", line 30, in validate_compute
        self.validate()
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/strategies/bluestore.py", line 61, in validate
        self.data_devs, osds_per_device=self.osds_per_device
      File "/usr/lib/python2.7/site-packages/ceph_volume/devices/lvm/strategies/validators.py", line 15, in minimum_device_size
        raise RuntimeError(msg % (device_size, device.path))
    RuntimeError: Unable to use device 0.00 B /dev/rbd0, LVs would be smaller than 5GB
  stderr_lines: <omitted>
  stdout: ''
  stdout_lines: <omitted>
2019-12-13 10:47:48,170 p=497315 u=ubuntu |  NO MORE HOSTS LEFT ****************************************************************************************
2019-12-13 10:47:48,171 p=497315 u=ubuntu |  PLAY RECAP ************************************************************************************************
2019-12-13 10:47:48,171 p=497315 u=ubuntu |  magna079                   : ok=101  changed=2    unreachable=0    failed=0    skipped=173  rescued=0    ignored=0
2019-12-13 10:47:48,171 p=497315 u=ubuntu |  magna120                   : ok=105  changed=2    unreachable=0    failed=0    skipped=169  rescued=0    ignored=0
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Additional info: attached relavant logs for issue analysis.