On Fri, Apr 12, 2013 at 12:07:36PM -0700, Jeff Davis wrote: > > (Attached patch is discussion only. Checking checksum in recovery > > isn't coded at all.) > > I like it. > > A few points: > > * Given that setting the checksum is unconditional in a backup block, do > we want to zero the checksum field when the backup block is restored if > checksums are disabled? Otherwise we would have a strange situation > where some blocks have a checksum on disk even when checksums are > disabled. > > * When we do PageSetChecksumInplace(), we need to be 100% sure that the > hole is empty; otherwise the checksum will fail when we re-expand it. It > might be worth a memset beforehand just to be sure.
Do we write the page holes to the WAL for full-page writes? I hope we don't. -- Bruce Momjian <br...@momjian.us> http://momjian.us EnterpriseDB http://enterprisedb.com + It's impossible for everything to be true. + -- Sent via pgsql-hackers mailing list (pgsql-hackers@postgresql.org) To make changes to your subscription: http://www.postgresql.org/mailpref/pgsql-hackers
