== sanity test 413k: QoS mkdir exclude prefixes ========== 21:16:21 (1788570981)
lmv.lustre-clilmv-ffff89534b5c8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff89534b5c8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff89534b5c8800.qos_exclude_prefixes=_temporary