== sanity test 413k: QoS mkdir exclude prefixes ========== 07:44:29 (1788003869)
lmv.lustre-clilmv-ffff9ef4c5920800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9ef4c5920800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9ef4c5920800.qos_exclude_prefixes=_temporary