Beispiel #1
0
def handle_replicated_pool(request, service):
    """Create a new replicated pool.

    :param request: dict of request operations and params.
    :param service: The ceph client to run the command under.
    :returns: dict. exit-code and reason if not 0.
    """
    pool_name = request.get('name')
    group_name = request.get('group')

    # Optional params
    # NOTE: Check this against the handling in the Pool classes, reconcile and
    # remove.
    pg_num = request.get('pg_num')
    replicas = request.get('replicas')
    if pg_num:
        # Cap pg_num to max allowed just in case.
        osds = get_osds(service)
        if osds:
            pg_num = min(pg_num, (len(osds) * 100 // replicas))
            request.update({'pg_num': pg_num})

    if group_name:
        group_namespace = request.get('group-namespace')
        # Add the pool to the group named "group_name"
        add_pool_to_group(pool=pool_name,
                          group=group_name,
                          namespace=group_namespace)

    try:
        pool = ReplicatedPool(service=service,
                              op=request)
    except KeyError:
        msg = "Missing parameter."
        log(msg, level=ERROR)
        return {'exit-code': 1, 'stderr': msg}

    if not pool_exists(service=service, name=pool_name):
        log("Creating pool '{}' (replicas={})".format(pool.name, replicas),
            level=INFO)
        pool.create()
    else:
        log("Pool '{}' already exists - skipping create".format(pool.name),
            level=DEBUG)

    # Set/update properties that are allowed to change after pool creation.
    pool.update()