== sanity test 413k: QoS mkdir exclude prefixes ========== 12:06:52 (1746634012)
lmv.lustre-clilmv-ffff880083b03000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880083b03000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880083b03000.qos_exclude_prefixes=_temporary