== sanity test 413k: QoS mkdir exclude prefixes ========== 13:07:01 (1772474821)
lmv.lustre-clilmv-ffff8dd70013f000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8dd70013f000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8dd70013f000.qos_exclude_prefixes=_temporary