== sanity test 413k: QoS mkdir exclude prefixes ========== 06:51:10 (1773226270)
lmv.lustre-clilmv-ffff9ff6186f4800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9ff6186f4800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9ff6186f4800.qos_exclude_prefixes=_temporary