== sanity test 413k: QoS mkdir exclude prefixes ========== 07:10:08 (1788520208)
lmv.lustre-clilmv-ffff935352578000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff935352578000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff935352578000.qos_exclude_prefixes=_temporary