Received: from malur.postgresql.org ([217.196.149.56]) by arkaria.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kZOz8-0001T8-LO for pgsql-hackers@arkaria.postgresql.org; Mon, 02 Nov 2020 01:50:14 +0000 Received: from localhost ([127.0.0.1] helo=malur.postgresql.org) by malur.postgresql.org with esmtp (Exim 4.92) (envelope-from ) id 1kZOz7-0001oF-GK for pgsql-hackers@arkaria.postgresql.org; Mon, 02 Nov 2020 01:50:13 +0000 Received: from makus.postgresql.org ([2001:4800:3e1:1::229]) by malur.postgresql.org with esmtps (TLS1.3:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kZOz7-0001o6-9c for pgsql-hackers@lists.postgresql.org; Mon, 02 Nov 2020 01:50:13 +0000 Received: from wout3-smtp.messagingengine.com ([64.147.123.19]) by makus.postgresql.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1kZOz5-0004es-0T for pgsql-hackers@lists.postgresql.org; Mon, 02 Nov 2020 01:50:12 +0000 Received: from compute1.internal (compute1.nyi.internal [10.202.2.41]) by mailout.west.internal (Postfix) with ESMTP id DAADA148D; Sun, 1 Nov 2020 20:50:08 -0500 (EST) Received: from mailfrontend2 ([10.202.2.163]) by compute1.internal (MEProxy); Sun, 01 Nov 2020 20:50:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=anarazel.de; h= date:from:to:cc:subject:message-id:references:mime-version :content-type:in-reply-to; s=fm3; bh=sglty9kwS/vSAoz30HqbAgdrkZE c0SL+1qi/4J5d0Qg=; b=d2jZ/B+H1jsuUptkA6i6jX0eFZ5Dvr6EkIrSC/H7ZBL BCLGa3w8REhJoaEo8tngclOLB9OTurLuFfpIar4TC5jG7d8uWbfqprxFm2fp7tI2 qZeeAbEZFeIBLhuSkSjGc3Bh406TpObIKXnbuu7PI1Mv64CQNYJOjz2YlIZcHK4d 1Q/0hOa6wOYUybwsu1FukKHwole+nXBZ5cABwqymh2gvuGEOxhxaiw9sFqLvHDXl Ji5RjR0IGXWRmTz+K280Lzlrf1bojysnjppsnLeee9ycfd9ZjcImp8YdugfwgVCY drpGMlvDqB7obqOE4t0VB5PILSOyO1gnGuCHmC1xmuA== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm1; bh=sglty9 kwS/vSAoz30HqbAgdrkZEc0SL+1qi/4J5d0Qg=; b=dzea1aXzcMGYFt+0egx2ju ovItxEakwDeoTPcLq4EW6DzG3x5KYekVJNVmldfiU04o2URwOWAImt/jhLx3Q4kY dinfhzIr0hwZTNjHlhYOIf1q/UyFrMrtqJkZqhzYGybv7EOpaoLw/+/4m7EExHFs +w/4iqblF6Bm5uxaTCiPpK19XKeHMO/fHaLm7RTYvppjMaStLD9zg0rKwBxsICov PaCNoROoFRhVbv9Zv6bQWOnjSghygk4D1wQ1upSeclKOArPtly9d4uVBtUB3LIrn PRxLqx9oAfIUJOaDZTfL5sxNFBVzJmvAY2YeCB/eNrjGy/U19h6uara++uMma3ew == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedujedruddttddgfeekucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhepfffhvffukfhfgggtuggjsehttdertddttddvnecuhfhrohhmpeetnhgurhgv shcuhfhrvghunhguuceorghnughrvghssegrnhgrrhgriigvlhdruggvqeenucggtffrrg htthgvrhhnpedukefhkeelueegveetheelffffjeegleeuudelfeefuedtleffueejfffh ueffudenucfkphepieejrdduiedtrddvudejrddvhedtnecuvehluhhsthgvrhfuihiivg eptdenucfrrghrrghmpehmrghilhhfrhhomheprghnughrvghssegrnhgrrhgriigvlhdr uggv X-ME-Proxy: Received: from intern.anarazel.de (c-67-160-217-250.hsd1.ca.comcast.net [67.160.217.250]) by mail.messagingengine.com (Postfix) with ESMTPA id A42713064680; Sun, 1 Nov 2020 20:50:07 -0500 (EST) Date: Sun, 1 Nov 2020 17:50:06 -0800 From: Andres Freund To: Michael Paquier Cc: Julien Rouhaud , Justin Pryzby , Masahiko Sawada , Robert Haas , PostgreSQL Hackers , Masahiko Sawada Subject: Re: Online checksums verification in the backend Message-ID: <20201102015006.itfb4e7t6ccof3ac@alap3.anarazel.de> References: <20201028050852.GF28445@paquier.xyz> <20201029181729.2nrub47u7yqncsv7@alap3.anarazel.de> <20201030025834.6spoioldj3jiqif3@alap3.anarazel.de> <20201030050852.5eenoh3sk2uxnv53@alap3.anarazel.de> <20201102010525.GA27101@paquier.xyz> <20201102013940.tk5e2co2maedzksw@alap3.anarazel.de> <20201102014500.GC27101@paquier.xyz> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20201102014500.GC27101@paquier.xyz> List-Id: List-Help: List-Subscribe: List-Post: List-Owner: List-Archive: Precedence: bulk Hi On 2020-11-02 10:45:00 +0900, Michael Paquier wrote: > On Sun, Nov 01, 2020 at 05:39:40PM -0800, Andres Freund wrote: > > I'm a bit limited writing - one handed for a while following an injury > > on Friday... > > Oops. Take care. Thanks! > > On 2020-11-02 10:05:25 +0900, Michael Paquier wrote: > > > There is no place doing that on HEAD. > > > > Err? > > How is this not doing IO while holding a buffer mapping lock? > > Well, other than the one we are discussing of course :) I am not following? Were you just confirming that its not a thing we do? Greetings, Andres Freund