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Re: Could not read block error question

From: Lukasz Brodziak <lukasz(dot)brodziak(at)gmail(dot)com>
To: Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>
Cc: pgsql-admin(at)postgresql(dot)org
Subject: Re: Could not read block error question
Date: 2010-09-28 14:38:41
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Lists: pgsql-admin
I would provide all the needed information if I only had them. The
thing is it happened on one of our client's machine and all he did was
reporting the problem without providing us the data folder. So I asked
the question just to know whether it is possible to read from a higher
block number than the highest physical number. Thank You for Your

2010/9/28 Kevin Grittner <Kevin(dot)Grittner(at)wicourts(dot)gov>:
> Lukasz Brodziak <lukasz(dot)brodziak(at)gmail(dot)com> wrote:
>> I got an error "Could not read block <no.> of relation...." it
>> appeared to be in pg_trigger
> If you'd pasted in the message as it appeared, we wouldn't need to
> guess whether you're right.
>> the block number was 110 and the file has only 67 pages. So the
>> question is how is it possible?
> That could be, if your reading of things is right, database
> corruption.  Before you do anything else, shutdown the database
> server and make a copy of the data directory and all its
> subdirectories.  (Don't try to pick one database or otherwise pick
> and choose files.)  Save that backup until you've recovered from the
> problem and things have been stable for at least a few weeks.
> Next, read this page and repost with more information:
> So far you haven't given us much to work with.
> -Kevin
> --
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Łukasz Brodziak
II MU Bioinformatyka

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Subject: Re: Could not read block error question
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