== sanity test 413k: QoS mkdir exclude prefixes ========== 11:17:53 (1786375073)
lmv.lustre-clilmv-ffff9da787060800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9da787060800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9da787060800.qos_exclude_prefixes=_temporary