== sanity test 413k: QoS mkdir exclude prefixes ========== 19:48:14 (1784764094)
lmv.lustre-clilmv-ffff8969c900a800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8969c900a800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8969c900a800.qos_exclude_prefixes=_temporary