From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A0D84C00140 for ; Thu, 18 Aug 2022 04:21:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S243296AbiHREVW (ORCPT ); Thu, 18 Aug 2022 00:21:22 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:47834 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243297AbiHREU4 (ORCPT ); Thu, 18 Aug 2022 00:20:56 -0400 Received: from new4-smtp.messagingengine.com (new4-smtp.messagingengine.com [66.111.4.230]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 2957B4A800; Wed, 17 Aug 2022 21:19:34 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id 6369D581196; Thu, 18 Aug 2022 00:19:14 -0400 (EDT) Received: from imap50 ([10.202.2.100]) by compute3.internal (MEProxy); Thu, 18 Aug 2022 00:19:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= colorremedies.com; h=cc:cc:content-type:date:date:from:from :in-reply-to:in-reply-to:message-id:mime-version:references :reply-to:sender:subject:subject:to:to; s=fm1; t=1660796354; x= 1660799954; bh=4YQTSfdZ352kAuAPv5CKShp5kenO9X49X3f9t0ZeXxk=; b=b ocDj0vLvQqz2vqNZ60dUWMdGbOuI9sRv8IEcKy/U2vYgds1oBLK4MzGF4Qq11LzB 9ybNOkpGfEwIvUEejEl05hBedTgeghwkeMC3SgYNjY60sw6AdbOySSgbj04ytGN8 nvRXb+Tyh1cuhpVRXezmiy9D9JtAbrtDR5tYEeT5RABU/YJgjaPWH7FOslyvMw7x vaNJPaxw0GhFeYmVGKUBV80RVmRESMq4PysL36tajxGJBTcoyyXccf1cKlb0t9v8 6XED6nt/ZzKgHIIaSK2yuod4gyiSyaENzbipVt2DV3QeOQ+mrSV0kCL5QfGz4T6P QiZU1z/HQpuyEl4V0E6Kg== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:cc:content-type:date:date:feedback-id :feedback-id:from:from:in-reply-to:in-reply-to:message-id :mime-version:references:reply-to:sender:subject:subject:to:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm1; t=1660796354; x=1660799954; bh=4YQTSfdZ352kAuAPv5CKShp5kenO 9X49X3f9t0ZeXxk=; b=PR9SKN1sttok8qkfJSNCUuMvn9VvvaYFljJjKepnyuQ1 t515RLdkgS0tPw3WKYVjdKxvs8jc4632zL0sDtQj+vCnJ3XhBsIP23puDKOzPf49 cu9qmsgZuN1ffNjQNm7jkHUQFn8MGINTnJ4cH80Nu6f/PHXr1jE6wzAXen2wxx6n 4+Qpb4oXPrhXn44nJxQn7BP8KipG0hjioT0Mmvuy/cIvY82XkpXD9Jlib4CZU4I2 eaxeL1uFaJnjNm/f6p48O6N1TwTBtbGgxjw2CD+6LsMVWQbftxL7Lm8qPnSy9RIP /IxQtSW0ber6ReTcHptO6IMZF7gfAEAPkuhrCtDwnw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdehjedgkedvucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne goufhushhpvggtthffohhmrghinhculdegledmnecujfgurhepofgfggfkjghffffhvfev ufgtsehttdertderredtnecuhfhrohhmpedfvehhrhhishcuofhurhhphhihfdcuoehlih hsthhssegtohhlohhrrhgvmhgvughivghsrdgtohhmqeenucggtffrrghtthgvrhhnpeef heeliedugeeuleetffeuheegkeetgfdtveevudffgfejvdegveeljefhvdefhfenucffoh hmrghinhepghhoohhglhgvrdgtohhmnecuvehluhhsthgvrhfuihiivgeptdenucfrrghr rghmpehmrghilhhfrhhomheplhhishhtshestgholhhorhhrvghmvgguihgvshdrtghomh X-ME-Proxy: Feedback-ID: i06494636:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id E73591700083; Thu, 18 Aug 2022 00:19:13 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.7.0-alpha0-841-g7899e99a45-fm-20220811.002-g7899e99a Mime-Version: 1.0 Message-Id: In-Reply-To: <9f2f608a-cd5f-4736-9e6d-07ccc2eca12c@www.fastmail.com> References: <2b8a38fa-f15f-45e8-8caa-61c5f8cd52de@www.fastmail.com> <35f0d608-7448-4276-8922-19a23d8f9049@www.fastmail.com> <568465de-5c3b-4d94-a74b-5b83ce2f942f@www.fastmail.com> <9f2f608a-cd5f-4736-9e6d-07ccc2eca12c@www.fastmail.com> Date: Thu, 18 Aug 2022 00:18:29 -0400 From: "Chris Murphy" To: "Ming Lei" Cc: "Nikolay Borisov" , "Jens Axboe" , "Jan Kara" , "Paolo Valente" , "Btrfs BTRFS" , Linux-RAID , linux-block , linux-kernel , "Josef Bacik" Subject: Re: stalling IO regression since linux 5.12, through 5.18 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-block@vger.kernel.org On Thu, Aug 18, 2022, at 12:12 AM, Chris Murphy wrote: > On Wed, Aug 17, 2022, at 11:41 PM, Ming Lei wrote: > >> OK, can you post the blk-mq debugfs log after you trigger it on v5.17? > > https://drive.google.com/file/d/1n8f66pVLCwQTJ0PMd71EiUZoeTWQk3dB/view?usp=sharing > > This time it happened pretty quickly. This log is soon after triple > digit load and no IO, but not as fully developed as before. The system > has become entirely unresponsive to new commands, so I have to issue > sysrq+b - if I let it go too long even that won't work. OK by the time I clicked send, the system had recovered. That also sometimes happens but then later IO stalls again and won't recover. So I haven't issued sysrq+b on this run yet. Here is a second blk-mq debugfs log... https://drive.google.com/file/d/1irHcns0qe7e7DJaDfanX8vSiqE1Nj5xl/view?usp=sharing -- Chris Murphy