Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1fDXG9-0003i0-NC for pgsql-hackers@arkaria.postgresql.org; Tue, 01 May 2018 15:32:05 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.89) (envelope-from ) id 1fDXG7-0005cq-0O for pgsql-hackers@arkaria.postgresql.org; Tue, 01 May 2018 15:32:03 +0000 Received: from makus.postgresql.org ([2001:4800:1501:1::229]) by malur.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1fDXG6-0005c4-GE for pgsql-hackers@lists.postgresql.org; Tue, 01 May 2018 15:32:02 +0000 Received: from sss.pgh.pa.us ([66.207.139.130]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_CBC_SHA384:256) (Exim 4.89) (envelope-from ) id 1fDXG2-0008CF-W0 for pgsql-hackers@lists.postgresql.org; Tue, 01 May 2018 15:32:00 +0000 Received: from sss1.sss.pgh.pa.us (localhost [127.0.0.1]) by sss.pgh.pa.us (8.14.4/8.14.4) with ESMTP id w41FVo6b022097; Tue, 1 May 2018 11:31:50 -0400 From: Tom Lane To: Heath Lord cc: Andres Freund , Noah Misch , Thomas Munro , Stephen Frost , PostgreSQL Hackers Subject: Re: "could not reattach to shared memory" on buildfarm member dory In-reply-to: <18056.1525148010@sss.pgh.pa.us> References: <25495.1524517820@sss.pgh.pa.us> <20180423231855.GK27724@tamriel.snowman.net> <20180424070646.GA2693533@rfd.leadboat.com> <17897.1525108069@sss.pgh.pa.us> <29823.1525132900@sss.pgh.pa.us> <20180501002419.onmikldoe2ssjauq@alap3.anarazel.de> <18056.1525148010@sss.pgh.pa.us> Comments: In-reply-to Tom Lane message dated "Tue, 01 May 2018 00:13:30 -0400" MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <22095.1525188710.1@sss.pgh.pa.us> Date: Tue, 01 May 2018 11:31:50 -0400 Message-ID: <22096.1525188710@sss.pgh.pa.us> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Well, at this point the only thing that's entirely clear is that none of the ideas I had work. I think we are going to be forced to pursue Noah's idea of doing an end-to-end retry. Somebody else will need to take point on that; I lack a Windows environment and have already done a lot more blind patch-pushing than I like in this effort. I'll revert the debugging code I added to win32_shmem.c, unless someone sees a reason to leave it there awhile longer. regards, tom lane