== sanity test 413k: QoS mkdir exclude prefixes ========== 21:30:24 (1787621424)
lmv.lustre-clilmv-ffff913bc3333800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff913bc3333800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff913bc3333800.qos_exclude_prefixes=_temporary