== sanity test 413k: QoS mkdir exclude prefixes ========== 01:34:22 (1743744862)
lmv.lustre-clilmv-ffff8800a7c4c800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff8800a7c4c800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff8800a7c4c800.qos_exclude_prefixes=_temporary