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Wed, 14 Oct 2026 07:51:54 +0000 From: Daniel Wagner Subject: [PATCH blktests 0/5] nvme: tests for isolated CPUs and fabrics queue mapping Date: Wed, 14 Oct 2026 09:51:46 +0200 Message-Id: <20261014-nvme-isolcpu-v1-0-2fd175a8ef00@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit X-B4-Tracking: v=1; b=H4sIAAAAAAAC/yWMQQqDMBREryKzbiCREtCrSBcaf+pXGyU/iiDev bFdvhneOyEUmQR1cSLSzsJLyGAeBdzQhjcp7jOj1KU12jxV2D95k2V266Yqr60h21bWe2RljeT 5+OUadPOUSJLg9X9k60Zy6a7hur74i8aYegAAAA== X-Change-ID: 20261014-nvme-isolcpu-9f061e6a96ff To: Shin'ichiro Kawasaki Cc: linux-block@vger.kernel.org, linux-nvme@lists.infradead.org, Daniel Wagner X-Mailer: b4 0.16.0 X-Rspamd-Server: rspamd1.dmz-prg2.suse.org X-Rspamd-Queue-Id: 67A7E21E5D X-Rspamd-Action: no action X-Spamd-Result: default: False [-4.51 / 50.00]; BAYES_HAM(-3.00)[100.00%]; NEURAL_HAM_LONG(-1.00)[-1.000]; R_DKIM_ALLOW(-0.20)[suse.de:s=susede2_rsa,suse.de:s=susede2_ed25519]; NEURAL_HAM_SHORT(-0.20)[-1.000]; 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X-BeenThere: linux-nvme@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-nvme" Errors-To: linux-nvme-bounces+linux-nvme=archiver.kernel.org@lists.infradead.org New tests for the bugs fixed by the kernel series "nvme-fabrics: fix connects with isolated CPUs and queue mapping bugs": https://lore.kernel.org/linux-nvme/20261014-nvme-fabrics-isolcpu-v1-0-355156be27b2@kernel.org/ nvme/070 connect with an isolated CPU (cpuset partition), verified I/O from a housekeeping and from the isolated CPU, traced on the queue of the isolated CPU nvme/071 more write and poll queues than online CPUs nvme/072 no queues left for polling nvme/073 reconnect with fewer I/O queues nvme/071-073 need write and poll queues and only run for tcp and rdma. Without the kernel series all four fail and nvme/073 crashes the kernel, with the series they pass. Tested with loop and tcp. Patch 1 stops _nvme_disconnect_ctrl() and _nvme_disconnect_subsys() from truncating $FULL, which dropped everything logged before the disconnect, e.g. the fio command lines. Signed-off-by: Daniel Wagner --- Daniel Wagner (5): common/nvme: don't truncate the full log when disconnecting nvme/070: test connect with an isolated CPU nvme/071: test I/O queue limits per queue type nvme/072: test poll support without poll queues nvme/073: test reconnect with fewer I/O queues common/nvme | 4 +- tests/nvme/070 | 196 +++++++++++++++++++++++++++++++++++++++++++++++++++++ tests/nvme/070.out | 2 + tests/nvme/071 | 104 ++++++++++++++++++++++++++++ tests/nvme/071.out | 2 + tests/nvme/072 | 85 +++++++++++++++++++++++ tests/nvme/072.out | 2 + tests/nvme/073 | 117 ++++++++++++++++++++++++++++++++ tests/nvme/073.out | 2 + 9 files changed, 512 insertions(+), 2 deletions(-) --- base-commit: 6f5a1dcb4551fe45c35e1fb1cdfa8343909f834a change-id: 20261014-nvme-isolcpu-9f061e6a96ff Best regards, -- Daniel Wagner