== sanity test 413k: QoS mkdir exclude prefixes ========== 14:45:01 (1780857901)
lmv.lustre-clilmv-ffff8cf087ce0800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8cf087ce0800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8cf087ce0800.qos_exclude_prefixes=_temporary