Re: shmctl EIDRM preventing startup

From: Tom Lane <tgl(at)sss(dot)pgh(dot)pa(dot)us>
To: Michael Fuhr <mike(at)fuhr(dot)org>
Cc: pgsql-general(at)postgresql(dot)org
Subject: Re: shmctl EIDRM preventing startup
Date: 2007-07-02 02:06:58
Message-ID: 20149.1183342018@sss.pgh.pa.us
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Michael Fuhr <mike(at)fuhr(dot)org> writes:
> One of the servers I use (RHEL AS 4; Linux 2.6.9-34.ELsmp x86_64)
> appears to be in the same state after a reboot as the server in the
> "Restart after poweroutage" thread from a few months ago:

> http://archives.postgresql.org/pgsql-general/2007-03/msg00738.php

Interesting indeed. Lapham's report was on FC6 which uses a kernel
vastly newer than RHEL4 (2.6.20) but his was also x86_64, which might
be relevant. I recall trying a little bit to reproduce the problem
after updating my own x86_64 box to FC6, but without success.

> Has anybody figured out if this is a Linux kernel bug? I might
> have until Monday morning if anybody can suggest something to look
> at; after that the admins will probably reboot and/or remove
> postmaster.pid to get the database running again.

Is it possible/reasonable/practical to (a) hold off longer than that
and (b) get me access to the box? On Monday I'd have a chance to
involve some Red Hat kernel folk in looking at it.

regards, tom lane

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