== sanity test 413k: QoS mkdir exclude prefixes ========== 22:56:56 (1788490616)
lmv.lustre-clilmv-ffff98f6deb1d800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff98f6deb1d800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff98f6deb1d800.qos_exclude_prefixes=_temporary