== sanity test 413k: QoS mkdir exclude prefixes ========== 21:34:45 (1788399285)
lmv.lustre-clilmv-ffff8e1ac543a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8e1ac543a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8e1ac543a800.qos_exclude_prefixes=_temporary