== sanity test 413k: QoS mkdir exclude prefixes ========== 00:51:25 (1781239885)
lmv.lustre-clilmv-ffff9b6285f3b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9b6285f3b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9b6285f3b800.qos_exclude_prefixes=_temporary