Increase the logging level of some IXFR messages
(Originally reported as #2671 (comment 211777).)
I'd like to suggest that we increase the logging level of these messages:
xfrout_log1(client, question_name, question_class, ISC_LOG_DEBUG(4), "IXFR version not in journal, " "falling back to AXFR"); [...] xfrout_log1(client, question_name, question_class, ISC_LOG_DEBUG(4), "IXFR delta size (%zu bytes) " "exceeds the maximum ratio to " "database size " "(%" PRIu64 " bytes), " "falling back to AXFR", jsize, dbsize);
...perhaps all the way to
ISC_LOG_INFO. It's not helpful for this to be a mysterious black box. Spurious AXFR fallbacks could be caused by a still-undetected corruption in the journal file, or a computational error counting the size of the database or the journal transactions, and without debug logging, or a full before-and-after copy of the database and journal, it's difficult to sort out which it is.