== sanity test 413k: QoS mkdir exclude prefixes ========== 11:04:17 (1786806257)
lmv.lustre-clilmv-ffff9a7e6a693800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9a7e6a693800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9a7e6a693800.qos_exclude_prefixes=_temporary