Re: amcheck (B-Tree integrity checking tool)

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От Michael Paquier
Тема Re: amcheck (B-Tree integrity checking tool)
Дата
Msg-id CAB7nPqTUbws7HG47W9-r2ofq+da8P+Ps7zCuDXApkOnZzaE1rg@mail.gmail.com
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Ответ на Re: amcheck (B-Tree integrity checking tool)  (Anastasia Lubennikova <a.lubennikova@postgrespro.ru>)
Ответы Re: amcheck (B-Tree integrity checking tool)
Re: amcheck (B-Tree integrity checking tool)
Список 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



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