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([240b:10:2720:5500:7cd9:6049:93c1:442]) by smtp.gmail.com with ESMTPSA id d2e1a72fcca58-71944a9831esm12701564b3a.24.2024.09.22.11.50.53 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Sun, 22 Sep 2024 11:50:54 -0700 (PDT) Message-ID: <9744ae62-9268-46f8-afef-fa775b00e249@gmail.com> Date: Mon, 23 Sep 2024 03:50:52 +0900 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] nvme-sysfs: add 'fna' attribute To: Keith Busch Cc: linux-nvme@lists.infradead.org References: <20240921154707.4362-1-ikegami.t@gmail.com> Content-Language: en-US From: Tokunori Ikegami In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240922_115055_434369_842D7D32 X-CRM114-Status: UNSURE ( 9.89 ) X-CRM114-Notice: Please train this message. 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 There are many identify commands fields so if the nvme driver can be kept the field values seems can be reduced to run many identify commands. Thank you. On 2024/09/23 0:36, Keith Busch wrote: > At least for multi-namespace subsystems, I would agree knowing this > value is important to understand the potentially undesired reprecussions > of running a format command, but that logic ought to just go in tooling. > And the meaning of the reported value here is not immediately obvious to > a typical user without the spec in front of you, so I'm a little > skeptical on exporting this attribute. > > nvme-cli already checks this on a format request, at least. You probably > are not formatting very frequently anyway, so avoiding an identify > command for such a low frequency event seems a bit overkill to me.