== sanity test 413k: QoS mkdir exclude prefixes ========== 04:47:11 (1778662031)
lmv.lustre-clilmv-ffff90a2d09c3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90a2d09c3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90a2d09c3800.qos_exclude_prefixes=_temporary