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Fri, 2 Sep 2022 12:53:31 -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: <297cbb87-87aa-2e1d-1fc3-8e96c241f28f@huaweicloud.com> References: <35f0d608-7448-4276-8922-19a23d8f9049@www.fastmail.com> <568465de-5c3b-4d94-a74b-5b83ce2f942f@www.fastmail.com> <9f2f608a-cd5f-4736-9e6d-07ccc2eca12c@www.fastmail.com> <5426d0f9-6539-477d-8feb-2b49136b960f@www.fastmail.com> <0f731b0a-fbd5-4e7b-a3df-0ed63360c1e0@www.fastmail.com> <297cbb87-87aa-2e1d-1fc3-8e96c241f28f@huaweicloud.com> Date: Fri, 02 Sep 2022 12:53:10 -0400 From: "Chris Murphy" To: "Yu Kuai" , "Ming Lei" , "Jan Kara" Cc: "Nikolay Borisov" , "Jens Axboe" , "Paolo Valente" , "Btrfs BTRFS" , Linux-RAID , linux-block , linux-kernel , "Josef Bacik" , "yukuai (C)" Subject: Re: stalling IO regression since linux 5.12, through 5.18 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, RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,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 Thu, Sep 1, 2022, at 3:02 AM, Yu Kuai wrote: > Hi, Chris >> Also follows another patch merged to v5.18 and it fixes io stall too, feel free to test it: >> >> 8f5fea65b06d blk-mq: avoid extending delays of active hctx from blk_mq_delay_run_hw_queues > > Have you tried this patch? The problem happens on 5.18 series kernels. But takes longer. Once I regain access to this setup, I can try to reproduce on 5.18 and 5.19, and provide block debugfs logs. -- Chris Murphy