== sanity test 413k: QoS mkdir exclude prefixes ========== 21:37:55 (1787794675)
lmv.lustre-clilmv-ffff89e512b15800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff89e512b15800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff89e512b15800.qos_exclude_prefixes=_temporary