== sanity test 413k: QoS mkdir exclude prefixes ========== 08:11:19 (1781611879)
lmv.lustre-clilmv-ffff888520ce0000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff888520ce0000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff888520ce0000.qos_exclude_prefixes=_temporary