> The failure is triggered at the end of perform_base_backup() when total_checksum_failures equals 1,
> via ereport(ERROR, errcode(XX001)).
> However, pg_stat_database.checksum_failures is not updated at all.
This seems like a separate issue existing for much longer, I'll submit
a separate patch about it.
> Judging by the current test cases,,
> pg_stat_database.checksum_failures appears to offer no detection capability beyond what ok($backup->finish) already
provides.
I improved the tests a bit, while also adding the 32m shared buffers
change to 010. I kept this as a separate commit for easier review.
