== sanity test 413k: QoS mkdir exclude prefixes ========== 12:11:49 (1789056709)
lmv.lustre-clilmv-ffff8b9110b51800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b9110b51800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b9110b51800.qos_exclude_prefixes=_temporary