== sanity test 413k: QoS mkdir exclude prefixes ========== 11:25:25 (1784129125)
lmv.lustre-clilmv-ffff9d70714b2800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9d70714b2800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9d70714b2800.qos_exclude_prefixes=_temporary