== sanity test 413k: QoS mkdir exclude prefixes ========== 04:17:37 (1785399457)
lmv.lustre-clilmv-ffff99e202fbc800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff99e202fbc800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff99e202fbc800.qos_exclude_prefixes=_temporary