== sanity test 413k: QoS mkdir exclude prefixes ========== 20:44:24 (1786754664)
lmv.lustre-clilmv-ffff9a6590043000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a6590043000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a6590043000.qos_exclude_prefixes=_temporary