== sanity test 413k: QoS mkdir exclude prefixes ========== 01:29:54 (1746163794)
lmv.lustre-clilmv-ffff88012d7f7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012d7f7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012d7f7800.qos_exclude_prefixes=_temporary