== sanity test 413k: QoS mkdir exclude prefixes ========== 15:50:15 (1734123015)
lmv.lustre-clilmv-ffff880132ef4800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880132ef4800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880132ef4800.qos_exclude_prefixes=_temporary