== sanity test 413k: QoS mkdir exclude prefixes ========== 11:34:08 (1790955248)
lmv.lustre-clilmv-ffff8aecc5752800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8aecc5752800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8aecc5752800.qos_exclude_prefixes=_temporary