== sanity test 413k: QoS mkdir exclude prefixes ========== 03:54:46 (1780386886)
lmv.lustre-clilmv-ffff9553083e0800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9553083e0800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9553083e0800.qos_exclude_prefixes=_temporary