== sanity test 413k: QoS mkdir exclude prefixes ========== 12:02:40 (1785945760)
lmv.lustre-clilmv-ffff915c0a1e8800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff915c0a1e8800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff915c0a1e8800.qos_exclude_prefixes=_temporary