== sanity test 413k: QoS mkdir exclude prefixes ========== 01:26:02 (1788845162)
lmv.lustre-clilmv-ffff8b6b86ba3000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b6b86ba3000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b6b86ba3000.qos_exclude_prefixes=_temporary