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Mon, 22 Jan 2024 11:00:24 -0800 (PST) Received: from localhost.localdomain ([2a02:2454:367:1500:fa08:d4d:b569:ac2d]) by smtp.gmail.com with ESMTPSA id k3-20020a170906a38300b00a298d735a1bsm13842413ejz.149.2024.01.22.11.00.23 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 22 Jan 2024 11:00:23 -0800 (PST) From: Sam Li To: qemu-devel@nongnu.org Cc: qemu-block@nongnu.org, Kevin Wolf , Paolo Bonzini , stefanha@redhat.com, Peter Xu , David Hildenbrand , dmitry.fomichev@wdc.com, hare@suse.de, Hanna Reitz , Eric Blake , Markus Armbruster , =?utf-8?q?Philippe_Mathieu-Daud=C3=A9?= , dlemoal@kernel.org, Keith Busch , Klaus Jensen , Sam Li Subject: [RFC v3 1/7] docs/qcow2: add zd_extension_size option to the zoned format feature Date: Mon, 22 Jan 2024 20:00:07 +0100 Message-Id: <20240122190013.41302-2-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20240122190013.41302-1-faithilikerun@gmail.com> References: <20240122190013.41302-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2a00:1450:4864:20::531; envelope-from=faithilikerun@gmail.com; helo=mail-ed1-x531.google.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FROM=0.001, RCVD_IN_DNSWL_NONE=-0.0001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org The NVMe ZNS command set has the zone descriptor extension feature for associating the data to a zone. Devices that supports ZAC/ZBC have zero zone descriptor extension size. Signed-off-by: Sam Li --- docs/interop/qcow2.txt | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/docs/interop/qcow2.txt b/docs/interop/qcow2.txt index a8dd4c3b15..106477d9ad 100644 --- a/docs/interop/qcow2.txt +++ b/docs/interop/qcow2.txt @@ -436,6 +436,15 @@ The fields of the zoned extension are: The offset of zoned metadata structure in the contained image, in bytes. + 44 - 51: zd_extension_size + The size of zone descriptor extension data in bytes. + The value must be a multiple of 64. + + The zone descriptor extension feature is associating data + to a zone which is only available in the NVMe ZNS command + set. A value of zero indicates the feature is not + available. + == Full disk encryption header pointer == The full disk encryption header must be present if, and only if, the