== sanity test 413k: QoS mkdir exclude prefixes ========== 04:00:55 (1759824055)
lmv.lustre-clilmv-ffff912083549800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff912083549800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff912083549800.qos_exclude_prefixes=_temporary