== sanity test 413k: QoS mkdir exclude prefixes ========== 06:35:54 (1769081754)
lmv.lustre-clilmv-ffff97f142bc7800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff97f142bc7800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff97f142bc7800.qos_exclude_prefixes=_temporary