== sanity test 413k: QoS mkdir exclude prefixes ========== 21:48:24 (1788659304)
lmv.lustre-clilmv-ffff898d00a97800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff898d00a97800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff898d00a97800.qos_exclude_prefixes=_temporary