== sanity test 413k: QoS mkdir exclude prefixes ========== 11:23:07 (1788362587)
lmv.lustre-clilmv-ffff9af3131dc000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9af3131dc000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9af3131dc000.qos_exclude_prefixes=_temporary