Re: Corrupt view in PostgreSQL 9.0.9

From: Mikael Kjellström <mikael(dot)kjellstrom(at)mksoft(dot)nu>
To: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
Cc: pgsql-bugs(at)postgresql(dot)org
Subject: Re: Corrupt view in PostgreSQL 9.0.9
Date: 2012-09-28 17:22:38
Message-ID: 5065DCDE.1080109@mksoft.nu
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On 2012-09-28 19:01, Tom Lane wrote:

> Looks like you had some data corruption from the spike. If you're
> lucky, it's just this one block of pg_attribute and you can reconstruct
> things. If not, there may be more problems ...

Looks like there are more problems unfortunally. See below.

>> Any point of running a vacuum full on the database or is that a bad idea?
>
> I wouldn't try that. It might be worth trying a REINDEX on
> pg_attribute. That will not fix the table damage but it will at least
> make sure the indexes are consistent with what's now in the table.
> After that, I'd suggest manually removing the broken view's pg_class
> row and then seeing if you can pg_dump with sane-looking results.
> If you can, a dump and restore of at least this database would be
> prudent.

I tried the reindex and then the manual delete of the view from
pg_class. That took care of the rows in pg_attribute but when I tried
to run pg_dump I now get this:

pg_dump: failed sanity check, parent table OID 16547 of pg_rewrite entry
OID 16550 not found

/Mikael

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