== sanity test 413k: QoS mkdir exclude prefixes ========== 07:05:28 (1789297528)
lmv.lustre-clilmv-ffff924b91797800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff924b91797800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff924b91797800.qos_exclude_prefixes=_temporary