== sanity test 413k: QoS mkdir exclude prefixes ========== 05:31:43 (1787477503)
lmv.lustre-clilmv-ffff9aa486a9a000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9aa486a9a000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9aa486a9a000.qos_exclude_prefixes=_temporary