== sanity test 413k: QoS mkdir exclude prefixes ========== 21:53:48 (1788746028)
lmv.lustre-clilmv-ffff8e20caa11800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8e20caa11800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8e20caa11800.qos_exclude_prefixes=_temporary