== sanity test 413k: QoS mkdir exclude prefixes ========== 23:06:11 (1787713571)
lmv.lustre-clilmv-ffff89e54a76a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff89e54a76a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff89e54a76a800.qos_exclude_prefixes=_temporary