Re: pg_dumpall failing from possible corrupted shared memory - Mailing list pgsql-general

From Richard Broersma Jr
Subject Re: pg_dumpall failing from possible corrupted shared memory
Date
Msg-id 728090.94812.qm@web31813.mail.mud.yahoo.com
Whole thread Raw
In response to Re: pg_dumpall failing from possible corrupted shared memory  (Tom Lane <tgl@sss.pgh.pa.us>)
List pgsql-general
> Richard Broersma Jr <rabroersma@yahoo.com> writes:
> >> Are you interested in dumping out the page of pg_index that
> >> contains this record, using pg_filedump?
>
> > I've attached the results.log to the email.
>
> Well, there's our smoking gun:
>   1bfc: 74746e6f 00000000 00000000 1c000000  ttno............
>                  ^^^^^^^^^^^^^^^^^^^^^^^^^^
>   1c0c: 01000000 00000000 1a000000 6d6f6420  ............mod
>         ^^^^^^^^^^^^^^^^^^^^^^^^^^

> The underlined stuff has overwritten what should be expression dump
> text.
>
> Seeing that the corruption begins at page offset 1c00 --- that is,
> exactly on a 1K boundary --- I'm a bit inclined to suspect a disk
> I/O glitch.  You might want to run some hardware diagnostics on
> your machine.

Thanks Tom for helping me through this mental exercise. Yes, I would agree my server hardware is
suspect and should be replaced concidering with the above evidence.

Regards,

Richard Broersma Jr.

pgsql-general by date:

Previous
From: Russ Brown
Date:
Subject: Re: Simple OUTER JOIN doubt
Next
From: John Cobo
Date:
Subject: Wrong record type - caused by SELECT order ???