== sanity test 413k: QoS mkdir exclude prefixes ========== 02:29:01 (1739518141)
lmv.lustre-clilmv-ffff880130460800.qos_exclude_prefixes=+abc:123:foo bar
lmv.lustre-clilmv-ffff880130460800.qos_exclude_prefixes=-abc:123:foo bar
lmv.lustre-clilmv-ffff880130460800.qos_exclude_prefixes=_temporary