== sanity test 413k: QoS mkdir exclude prefixes ========== 17:29:50 (1789594190)
lmv.lustre-clilmv-ffff9254783c7000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9254783c7000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9254783c7000.qos_exclude_prefixes=_temporary