== sanity test 413k: QoS mkdir exclude prefixes ========== 06:56:59 (1731758219)
lmv.lustre-clilmv-ffff8800b610b000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800b610b000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800b610b000.qos_exclude_prefixes=_temporary