== sanity test 413k: QoS mkdir exclude prefixes ========== 14:06:21 (1788804381)
lmv.lustre-clilmv-ffff90eb84e20800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff90eb84e20800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff90eb84e20800.qos_exclude_prefixes=_temporary