On Tue, Mar 6, 2012 at 5:14 PM, Robert Haas <robertmhaas@gmail.com> wrote:
>> Options
>>
>> (1) Recovery ignores checksums until db in consistent state
>>
>> (2) Recovery ignores checksums until all databases are enabled, when
>> we set flag in pg_control
>>
>> (3) Recovery checks blocks marked as having a checksum, no matter the
>> overall state
>
> How about combining #1 and #3? If the database isn't consistent yet
> (and thus we can't look at pg_database) then we rely on the blocks
> themselves to tell us whether they have checksums. Once we reach
> consistency we can do better.
We can change state then, but to what? We don't have a relcache.
Maybe that puts us back at Square #1. Will think
--
Simon Riggs http://www.2ndQuadrant.com/
PostgreSQL Development, 24x7 Support, Training & Services
