== sanity test 413k: QoS mkdir exclude prefixes ========== 21:01:52 (1777424512)
lmv.lustre-clilmv-ffff8f1538ea8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8f1538ea8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8f1538ea8800.qos_exclude_prefixes=_temporary