== sanity test 413k: QoS mkdir exclude prefixes ========== 19:03:37 (1741907017)
lmv.lustre-clilmv-ffff88007e0f1000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88007e0f1000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88007e0f1000.qos_exclude_prefixes=_temporary