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Tue, 10 Sep 2024 02:30:18 -0700 (PDT) Date: Tue, 10 Sep 2024 10:30:18 +0100 From: Robert Beckett To: "Keith Busch" Cc: "linux-nvme" , "Jens Axboe" , "Christoph Hellwig" , "Sagi Grimberg" , "Andrew Morton" , "linux-mm" Message-ID: <191db450152.e0b28690987786.6989198174827147639@collabora.com> In-Reply-To: References: <191d810a4e3.fcc6066c765804.973611676137075390@collabora.com> Subject: Re: possible regression fs corruption on 64GB nvme MIME-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Importance: Medium User-Agent: Zoho Mail X-Mailer: Zoho Mail X-Rspamd-Queue-Id: 3FECEC000A X-Rspam-User: X-Rspamd-Server: rspam05 X-Stat-Signature: mtdkmc3xw9ueh1gesdp7etnrpyhwwmws X-HE-Tag: 1725960661-228296 X-HE-Meta: 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 HwKx2XZ0 0r+J24OCwVGiKlZNwdSQJkNsN4wIghdkd147VTTSzE/jm2iAROM7wVkI900x+42aPUMf5iLTH5bRm235nAIqheoolU9brR5Ns2In1RUN3k4lFZzWCgC2TKw/Ib/nJ4vVlQpE2QRO7wI6RYKGIvQ4J3CioYAZIDz0txwcH+byEra9cAPLxZINnMBTqWK3T8YL2DQUAfE+oqs0G476YyiGg69YS7NsJ0tGh4s81N4j8R91bZ4PLd/89LXwYVFIrBYJGetHbzMSC895qcPYHuVrUlouMdolQO8C7xfmWVNyZaxx1W+gtBQBa/TWJMisrbO/2n6c7YWju37LeLzA= X-Bogosity: Ham, tests=bogofilter, spamicity=0.000132, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: ---- On Mon, 09 Sep 2024 21:31:41 +0100 Keith Busch wrote --- > On Mon, Sep 09, 2024 at 02:29:14PM -0600, Keith Busch wrote: > > As a test, could you try kernel parameter "nvme.io_queue_depth_set=2"? > > Err, I mean "nvme.io_queue_depth=2". > Thanks, I'll give it a try along with your other questions and report back. For clarity, the repro steps dropped a step. They should have included the make command: $ dd if=/dev/urandom of=test_file bs=1M count=10240 $ desync make test_file.caibx test_file $ sudo bash -c "echo 3 > /proc/sys/vm/drop_caches" $ desync verify-index test_file.caibx test_file