== sanity test 413k: QoS mkdir exclude prefixes ========== 08:13:04 (1744891984)
lmv.lustre-clilmv-ffff88013263b800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88013263b800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88013263b800.qos_exclude_prefixes=_temporary