== sanity test 413k: QoS mkdir exclude prefixes ========== 15:07:03 (1777057623)
lmv.lustre-clilmv-ffff99838656d800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff99838656d800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff99838656d800.qos_exclude_prefixes=_temporary