== sanity test 413k: QoS mkdir exclude prefixes ========== 19:15:12 (1788822912)
lmv.lustre-clilmv-ffff9559c2f84800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9559c2f84800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9559c2f84800.qos_exclude_prefixes=_temporary