== sanity test 413k: QoS mkdir exclude prefixes ========== 04:20:53 (1789028453)
lmv.lustre-clilmv-ffff991b465d6000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff991b465d6000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff991b465d6000.qos_exclude_prefixes=_temporary