== sanity test 413k: QoS mkdir exclude prefixes ========== 16:03:34 (1726862614)
lmv.lustre-clilmv-ffff88012a4c9000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012a4c9000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012a4c9000.qos_exclude_prefixes=_temporary