| From: | Jesper Krogh <jesper(at)krogh(dot)cc> |
|---|---|
| To: | Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us> |
| Cc: | pgsql-admin(at)postgresql(dot)org |
| Subject: | Re: DB corruption. |
| Date: | 2011-10-09 17:49:16 |
| Message-ID: | 4E91DE9C.60408@krogh.cc |
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| Lists: | pgsql-admin |
On 2011-10-09 17:41, Tom Lane wrote:
> Jesper Krogh<jesper(at)krogh(dot)cc> writes:
>> I have got a corrupt db.. most likely due to an xfs bug..
>> pg_dump: SQL command failed
>> pg_dump: Error message from server: ERROR: invalid page header in block
>> 14174944 of relation base/16385/58318948
>> Can I somehow get pg_dump to "ignore" that block and dump everything else?
> The traditional solution is to zero out the bad block, eg using dd from
> /dev/zero. It's easy to zero more than you intended, so practicing on a
> scratch copy of the table is recommended.
>
> But first you should check what kind of relation that is. If it's an
> index, you could just REINDEX it instead.
So it is "just" blocknumber * blocksize .. offset, blocksize of zeroes.. ?
Or is the math harder?
--
Jesper
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