== sanity test 413k: QoS mkdir exclude prefixes ========== 07:09:55 (1731758995)
lmv.lustre-clilmv-ffff88012a441000.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff88012a441000.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff88012a441000.qos_exclude_prefixes=_temporary