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Date: Sun, 28 Mar 2010 23:27:33 +0100
Subject: Re: ERROR: could not open segment 1 of relation
	1663/743352/743420 (target block 6407642): No such file or directory
From: "Mike Williams" <mike.williams@comodo.com>
To: "Tom Lane" <tgl@sss.pgh.pa.us>
Cc: pgsql-admin@postgresql.org
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On Sun, March 28, 2010 8:49 pm, Tom Lane wrote:
>> The server is Gentoo, and I don't have an identical server to use. This
>> machines HA partner is staying at 8.3.5 until we're completely and
>> entirely sure 8.3.10 works right.
>
> I wasn't really suggesting that you need an *identical* machine.  If
> this is a software problem, as seems moderately likely at this point,
> it should be possible to reproduce it on a different machine.  Even more
> to the point, it's going to be difficult to find the problem without
> tracing through the fault case with a debugger --- which isn't something
> you're going to want to do on a production server.  Have you got a test
> machine you can load the data onto?  Preferably one you could give a PG
> developer access to?

We do have a test system, and the only significant difference from
production is the kernel.
Test are para-virt VMs with "regular" kernels, production are real
machines with hardened kernels (grsec+pax).
I got prod onto a regular kernel and nothing in nearly an hour.

8.3.5 has worked forever and a day on this type of setup.

-- 
Mike Williams