== sanity test 413k: QoS mkdir exclude prefixes ========== 09:13:10 (1786194790)
lmv.lustre-clilmv-ffff957ff86d2000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff957ff86d2000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff957ff86d2000.qos_exclude_prefixes=_temporary