== sanity test 413k: QoS mkdir exclude prefixes ========== 23:04:51 (1786763091)
lmv.lustre-clilmv-ffff88db20945000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88db20945000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88db20945000.qos_exclude_prefixes=_temporary