== sanity test 413k: QoS mkdir exclude prefixes ========== 18:21:10 (1788474070)
lmv.lustre-clilmv-ffff9bf2c8595000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff9bf2c8595000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff9bf2c8595000.qos_exclude_prefixes=_temporary