== sanity test 413k: QoS mkdir exclude prefixes ========== 13:18:25 (1777915105)
lmv.lustre-clilmv-ffff9c8084c85000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9c8084c85000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9c8084c85000.qos_exclude_prefixes=_temporary