== sanity test 413k: QoS mkdir exclude prefixes ========== 15:33:17 (1787859197)
lmv.lustre-clilmv-ffff8c2d89b17000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8c2d89b17000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8c2d89b17000.qos_exclude_prefixes=_temporary