== sanity test 413k: QoS mkdir exclude prefixes ========== 22:57:12 (1775876232)
lmv.lustre-clilmv-ffff9d67c51e5000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9d67c51e5000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9d67c51e5000.qos_exclude_prefixes=_temporary