== sanity test 413k: QoS mkdir exclude prefixes ========== 12:05:02 (1783958702)
lmv.lustre-clilmv-ffff9a7bd035e800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a7bd035e800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a7bd035e800.qos_exclude_prefixes=_temporary