== sanity test 413k: QoS mkdir exclude prefixes ========== 09:08:05 (1786194485)
lmv.lustre-clilmv-ffff931788092000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff931788092000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff931788092000.qos_exclude_prefixes=_temporary