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[2603:8081:1405:679b:2301:d8a4:1c8f:de7]) by smtp.gmail.com with ESMTPSA id d13-20020a056830138d00b006b89dafb721sm1912311otq.78.2023.10.24.10.06.00 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 24 Oct 2023 10:06:01 -0700 (PDT) Message-ID: <b7d14c57-9d3c-46c6-adb1-a3d892b9a634@gmail.com> Date: Tue, 24 Oct 2023 12:05:59 -0500 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: srp/002 hang in blktests Content-Language: en-US To: Bart Van Assche <bvanassche@acm.org>, linux-rdma@vger.kernel.org, jgg@nvidia.com References: <b549a186-9c80-47e7-a54c-cd64d8cae9b7@gmail.com> <06229821-6d93-4f74-95ef-af352f101b7f@acm.org> <3e2191b7-56de-4654-936e-46fbc5828122@gmail.com> <53ede78a-f73d-44cd-a555-f8ff36bd9c55@acm.org> <b4071c0b-aebe-4fdf-a788-442215e17d88@gmail.com> <f561804c-41c8-48af-ab2b-45f54bd117b6@acm.org> <119304fc-a61d-4567-8d23-edb69676fad5@acm.org> From: Bob Pearson <rpearsonhpe@gmail.com> In-Reply-To: <119304fc-a61d-4567-8d23-edb69676fad5@acm.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: <linux-rdma.vger.kernel.org> X-Mailing-List: linux-rdma@vger.kernel.org Xref: nntp.lore.kernel.org org.kernel.vger.linux-rdma:108217 Newsgroups: org.kernel.vger.linux-rdma Path: nntp.lore.kernel.org!not-for-mail On 10/24/23 11:31, Bart Van Assche wrote: > On 10/23/23 13:59, Bart Van Assche wrote: >> On 10/23/23 13:41, Bob Pearson wrote: >>> On 10/23/23 15:21, Bart Van Assche wrote: >>>> On 10/23/23 11:29, Bob Pearson wrote: >>>>> Lots of work. Thanks!! Did you mean 6.6 instead of 6.5? I assume >>>>> you are running an Ubuntu 23.10 VM and not bare metal while I am >>>>> not. >>>> >>>> Yes, I meant 6.6 instead of 6.5. I'm indeed running Ubuntu 23.10 >>>> inside a VM. BTW, the test is still running and has just reached 231 >>>> iterations >>>> ... >>> >>> Very good news! Maybe we can let rxe out of the doghouse. >> >> Is there perhaps a misunderstanding? I ran my tests with the >> soft-iWARP driver. Did you run your tests with the RXE driver? > > (replying to my own email) > > With the RXE driver I see a hang after 143 iterations in the same VM > (Ubuntu 23.10 VM, v6.6-rc7 kernel with kernel debugging disabled). No > SRP paths are available so the hang is not caused by a multipathd bug: > > # lsscsi > [0:0:0:0]    cd/dvd  QEMU     QEMU DVD-ROM     2.5+  /dev/sr0 > [6:0:0:0]    disk    Linux    scsi_debug       0191  /dev/sda > > I couldn't obtain more information because kernel debugging is disabled. > But it is suspicious that this hang happens with the RXE driver and not > with the soft-iWARP driver. > > Bart. > Bart, Very interesting. But, 143 is a new record for rxe. Your siw results are consistent with what I saw. I only saw siw hangs with the debug kernel. Bob ]