== sanity test 413k: QoS mkdir exclude prefixes ========== 01:47:30 (1763880450)
lmv.lustre-clilmv-ffff8c5858ec4800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8c5858ec4800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8c5858ec4800.qos_exclude_prefixes=_temporary