Ceph » ceph-volume

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def osd_id_available(osd_id):
"""
Checks to see if an osd ID exists and if it's available for
reuse. Returns True if it is, False if it isn't.

:param osd_id: The osd ID to check
    """ 
    if osd_id is None:
        return False
    bootstrap_keyring = '/var/lib/ceph/bootstrap-osd/%s.keyring' % conf.cluster
    stdout, stderr, returncode = process.call(
        [
            'ceph',
            '--cluster', conf.cluster,
            '--name', 'client.bootstrap-osd',
            '--keyring', bootstrap_keyring,
            'osd',
            'tree',
            '-f', 'json',
        ],
        show_command=True
    )
    if returncode != 0:
        raise RuntimeError('Unable check if OSD id exists: %s' % osd_id)

output = json.loads(''.join(stdout).strip())
    osds = output['nodes']
    osd = [osd for osd in osds if str(osd['id'])  str(osd_id)]
    if osd and osd[0].get('status')  "destroyed":
        return True
    return False
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The currently specified ID must be in a destroyed state.

As long as the ID does not exist in the cluster, it is okay