== sanity test 413k: QoS mkdir exclude prefixes ========== 14:58:09 (1744138689)
lmv.lustre-clilmv-ffff8800aec82000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800aec82000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800aec82000.qos_exclude_prefixes=_temporary