== sanity test 413k: QoS mkdir exclude prefixes ========== 09:32:01 (1787405521)
lmv.lustre-clilmv-ffff9a4b152a3800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a4b152a3800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a4b152a3800.qos_exclude_prefixes=_temporary