== sanity test 413k: QoS mkdir exclude prefixes ========== 00:51:01 (1746161461)
lmv.lustre-clilmv-ffff88012a5c4800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012a5c4800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012a5c4800.qos_exclude_prefixes=_temporary