== sanity test 413k: QoS mkdir exclude prefixes ========== 02:59:55 (1789023595)
lmv.lustre-clilmv-ffff95004fde4000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff95004fde4000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff95004fde4000.qos_exclude_prefixes=_temporary