== sanity test 413k: QoS mkdir exclude prefixes ========== 03:55:58 (1788767758)
lmv.lustre-clilmv-ffff958020e98800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff958020e98800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff958020e98800.qos_exclude_prefixes=_temporary