== sanity test 413k: QoS mkdir exclude prefixes ========== 22:56:27 (1763351787)
lmv.lustre-clilmv-ffff970f33db3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff970f33db3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff970f33db3800.qos_exclude_prefixes=_temporary