== sanity test 413k: QoS mkdir exclude prefixes ========== 11:57:42 (1788364662)
lmv.lustre-clilmv-ffff9d4c0a250800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9d4c0a250800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9d4c0a250800.qos_exclude_prefixes=_temporary