== sanity test 413k: QoS mkdir exclude prefixes ========== 03:07:08 (1747811228)
lmv.lustre-clilmv-ffff88012b0e1800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012b0e1800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012b0e1800.qos_exclude_prefixes=_temporary