== sanity test 413k: QoS mkdir exclude prefixes ========== 04:46:23 (1768556783)
lmv.lustre-clilmv-ffff92457b8c1800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff92457b8c1800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff92457b8c1800.qos_exclude_prefixes=_temporary