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[2620:137:e000::1:20]) by mx.google.com with ESMTP id gt18-20020a1709072d9200b0073096092e31si6920596ejc.537.2022.08.10.13.12.04; Wed, 10 Aug 2022 13:12:33 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@colorremedies.com header.s=fm1 header.b=hooNUhKS; dkim=pass header.i=@messagingengine.com header.s=fm1 header.b=0vfyS2DV; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233227AbiHJTfK (ORCPT + 99 others); Wed, 10 Aug 2022 15:35:10 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:36648 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229501AbiHJTfI (ORCPT ); Wed, 10 Aug 2022 15:35:08 -0400 Received: from new3-smtp.messagingengine.com (new3-smtp.messagingengine.com [66.111.4.229]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1B2487823F; Wed, 10 Aug 2022 12:35:08 -0700 (PDT) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailnew.nyi.internal (Postfix) with ESMTP id EA10C580A04; Wed, 10 Aug 2022 15:35:03 -0400 (EDT) Received: from imap50 ([10.202.2.100]) by compute3.internal (MEProxy); Wed, 10 Aug 2022 15:35:03 -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=1660160103; x= 1660163703; bh=0vmr1fhdy+FAoUqaRAABEWacZoBorR05F3CyKvQXIo4=; b=h ooNUhKSJiBC6+3cetzdzZHffKUq2FaeCpRRZvJL9VtexQlDJLokwYyeJXqAelzOQ cLxh/TH46z1wy5VssQUWq+EpzINRzz7a3CCz/RugLHTo0zz7+bx8fQUzpQH0/DUe ZwJAocZx4Aao76m9SF3dLrs+9y9xoPpOUCSHh/IAl6qvHL5DkWLmvc8266yRgodr gb8+Jcuys+202gGXERC4MAAgYK0veWIkDC3ObuOG5qaKQtcpXGnHXFdm1R4isd/1 n+skRHAZj8wQ7+lbOdmaFvjN8aFP4sB2njEg4p5EHDT8UwoRDwdysMsfZzPDbbwU Cbxd6livDaIzE5Me5+MMA== 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=1660160103; x=1660163703; bh=0vmr1fhdy+FAoUqaRAABEWacZoBo rR05F3CyKvQXIo4=; b=0vfyS2DV8VWD8l4pKg81CY0oxBl50sbjJI4r8BkcNDhM UaPe3ljK7reseVkcsiT5jpP3/9Ucjx8yyJlVpG/qfAM9iSCHWfE5MGN5vhO9kNlb vvPgM2rHw+fPjZEPlrfWtt1iKsRyRtWRj8hjqYUwENu5SLH1a6V2CbVbHo2gESov RNxRftpo9DgTx4O3muaIelIEXHwTChaLyGOf/982o7tw90z9yqUHrX+na8e1tKZl ejMmNRQg9Qi60SY7qwG920dThqUutoTThuocdzCynxn9gKwVVh0j6Ryf0n1YeGyr PbC4dB4DMC8VUGYXfB/JM0QjAYbQC9KGr4dezIHq5Q== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvfedrvdegvddgudefiecutefuodetggdotefrod ftvfcurfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfgh necuuegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmd enucfjughrpefofgggkfgjfhffhffvvefutgesthdtredtreertdenucfhrhhomhepfdev hhhrihhsucfouhhrphhhhidfuceolhhishhtshestgholhhorhhrvghmvgguihgvshdrtg homheqnecuggftrfgrthhtvghrnhepgfdvueektdefgfefgfdtleffvdeileetgfefuddt ffelueeiveeiveekhedtheeunecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghmpe hmrghilhhfrhhomheplhhishhtshestgholhhorhhrvghmvgguihgvshdrtghomh X-ME-Proxy: Feedback-ID: i06494636:Fastmail Received: by mailuser.nyi.internal (Postfix, from userid 501) id 9B7B21700083; Wed, 10 Aug 2022 15:35:03 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.7.0-alpha0-811-gb808317eab-fm-20220801.001-gb808317e Mime-Version: 1.0 Message-Id: In-Reply-To: References: <2220d403-e443-4e60-b7c3-d149e402c13e@www.fastmail.com> Date: Wed, 10 Aug 2022 15:34:43 -0400 From: "Chris Murphy" To: "Josef Bacik" Cc: "Btrfs BTRFS" , Linux-RAID , linux-block@vger.kernel.org, linux-kernel Subject: Re: stalling IO regression in linux 5.12 Content-Type: text/plain X-Spam-Status: No, score=-2.8 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_DNSWL_LOW,SPF_HELO_PASS, SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, Aug 10, 2022, at 2:42 PM, Chris Murphy wrote: > On Wed, Aug 10, 2022, at 2:33 PM, Chris Murphy wrote: >> On Wed, Aug 10, 2022, at 1:48 PM, Josef Bacik wrote: >> >>> To help narrow this down can you disable any IO controller you've got enabled >>> and see if you can reproduce? If you can sysrq+w is super helpful as it'll >>> point us in the next direction to look. Thanks, >> >> I'm not following, sorry. I can boot with >> systemd.unified_cgroup_hierarchy=0 to make sure it's all off, but we're >> not using an IO cgroup controllers specifically as far as I'm aware. > > OK yeah that won't work because the workload requires cgroup2 or it won't run. Booted with cgroup_disable=io, and confirmed cat /sys/fs/cgroup/cgroup.controllers does not list io. I'll rerun the workload now. Sometimes reproduces fast, other times a couple hours. -- Chris Murphy