== sanity test 413k: QoS mkdir exclude prefixes ========== 05:14:21 (1787390061)
lmv.lustre-clilmv-ffff8b4edfc69000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b4edfc69000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b4edfc69000.qos_exclude_prefixes=_temporary