== sanity test 413k: QoS mkdir exclude prefixes ========== 09:37:33 (1787837853)
lmv.lustre-clilmv-ffff8b7c22ee4000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8b7c22ee4000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8b7c22ee4000.qos_exclude_prefixes=_temporary