== sanity test 413k: QoS mkdir exclude prefixes ========== 23:59:10 (1764737950)
lmv.lustre-clilmv-ffff929503526000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff929503526000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff929503526000.qos_exclude_prefixes=_temporary