Jignesh Shah escribió: > Now comes the thing that I am still exploring > * Do we do checksum in WAL ? I guess we do .. Which means that we are > now doing double checksumming on the data. One in ZFS and one in > postgresql. ZFS does allow checksumming to be turned off (but on new > blocks allocated). But of course the philosophy is where should it be > done (ZFS or PostgreSQL). Checksums on WAL are not optional in Postgres, because AFAIR they are used to determine when it should stop recovering. -- Alvaro Herrera http://www.CommandPrompt.com/ PostgreSQL Replication, Consulting, Custom Development, 24x7 support
