== sanity test 413k: QoS mkdir exclude prefixes ========== 00:41:25 (1789188085)
lmv.lustre-clilmv-ffff98e410a77000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff98e410a77000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff98e410a77000.qos_exclude_prefixes=_temporary