Re: amcheck (B-Tree integrity checking tool) - Mailing list pgsql-hackers

On Fri, Mar 11, 2016 at 5:19 PM, Anastasia Lubennikova wrote:
> BTW, if you know a good way to corrupt index (and do it reproducible) I'd be
> very glad to see it.

You can use for example dd in non-truncate mode to corrupt on-disk
page data, say that for example:
dd if=/dev/random bs=8192 count=1 \   seek=$BLOCK_ID of=base/$DBOID/$RELFILENODE \   conv=notrunc
-- 
Michael