From: Tom Lane <tgl@sss.pgh.pa.us>
To: Noah Misch <noah@leadboat.com>
Cc: pgsql-hackers@lists.postgresql.org
Subject: Re: Unexpected "shared memory block is still in use"
Date: Thu, 09 May 2019 09:47:34 -0400
Message-ID: <2663.1557409654@sss.pgh.pa.us> (raw)
In-Reply-To: <20190509055414.GB1066859@rfd.leadboat.com>
References: <22224.1557340366@sss.pgh.pa.us>
<20190509055414.GB1066859@rfd.leadboat.com>
Noah Misch <noah@leadboat.com> writes:
> On Wed, May 08, 2019 at 02:32:46PM -0400, Tom Lane wrote:
>> Just now, while running a parallel check-world on HEAD according to the
>> same script I've been using for quite some time, one of the TAP tests
>> died during initdb:
>> performing post-bootstrap initialization ... 2019-05-08 13:59:19.963 EDT [18351] FATAL: pre-existing shared memory block (key 5440004, ID 1734475802) is still in use
> The odds are very high that you would not have gotten that error before that
> commit. But if the cause matches your guess, it's not something wrong with
> the commit ...
Fair point.
> What OS, OS version, and filesystem?
Up-to-date RHEL6 (kernel 2.6.32-754.12.1.el6.x86_64), ext4 over LVM
on spinning rust with an LSI MegaRAID controller in front of it.
Since complaining, I've done half a dozen more parallel check-worlds
without issue, so the error was and still is rare. This matches the
fact that we've not seen it in the buildfarm :-(.
regards, tom lane
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To: pgsql-hackers@postgresql.org
Cc: tgl@sss.pgh.pa.us, noah@leadboat.com, pgsql-hackers@lists.postgresql.org
Subject: Re: Unexpected "shared memory block is still in use"
In-Reply-To: <2663.1557409654@sss.pgh.pa.us>
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