== sanity test 413k: QoS mkdir exclude prefixes ========== 00:29:18 (1788755358)
lmv.lustre-clilmv-ffff952f4512e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff952f4512e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff952f4512e800.qos_exclude_prefixes=_temporary