== sanity test 413k: QoS mkdir exclude prefixes ========== 06:34:19 (1787394859)
lmv.lustre-clilmv-ffff94acf9ab4000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff94acf9ab4000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff94acf9ab4000.qos_exclude_prefixes=_temporary