On Fri, 2008-01-18 at 19:58 -0500, Tom Lane wrote:
> In any case, 125 different zeroed pages is pretty hard to explain
> by such a mechanism (especially if they were scattered rather than
> in contiguous clumps).
Can you show us the messages, so we can understand the distribution of
the pages?
Are there different numbers of rows in the two tables? Just a select
count(*) might do, but any way you have of verifying data between the
two systems would be very useful.
The page numbers are identical between both systems, so use the
contrib/pageinspect get_raw_page() function to record the contents on
both systems before they diverge too much. (BTW, the final commit of
those tools seems to have removed the docs I wrote for the original
version and haven't been replaced with a README -- huh!?).
create table bad_blocks as select <blockid> as blockid,
get_raw_page(<relname>, <blockid>)::bytea as raw_page;
I've got a bad feeling about rsync. Mason's recent problems used rsync
and so far they are not properly explained, except as a hardware
problem.
--
Simon Riggs
2ndQuadrant http://www.2ndQuadrant.com