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([106.84.131.213]) by smtp.gmail.com with ESMTPSA id y24-20020aa78558000000b0068fb8080939sm6780553pfn.65.2023.09.18.02.53.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Sep 2023 02:53:31 -0700 (PDT) From: Sam Li To: qemu-devel@nongnu.org Cc: dmitry.fomichev@wdc.com, Markus Armbruster , Eric Blake , dlemoal@kernel.org, Hanna Reitz , stefanha@redhat.com, hare@suse.de, Kevin Wolf , qemu-block@nongnu.org, Sam Li Subject: [PATCH v4 1/4] docs/qcow2: add the zoned format feature Date: Mon, 18 Sep 2023 17:53:10 +0800 Message-Id: <20230918095313.5492-2-faithilikerun@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230918095313.5492-1-faithilikerun@gmail.com> References: <20230918095313.5492-1-faithilikerun@gmail.com> MIME-Version: 1.0 Received-SPF: pass client-ip=2607:f8b0:4864:20::433; envelope-from=faithilikerun@gmail.com; helo=mail-pf1-x433.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 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 Add the specs for the zoned format feature of the qcow2 driver. The qcow2 file can be taken as zoned device and passed through by virtio-blk device or NVMe ZNS device to the guest given zoned information. Signed-off-by: Sam Li Reviewed-by: Stefan Hajnoczi --- docs/system/qemu-block-drivers.rst.inc | 33 ++++++++++++++++++++++++++ 1 file changed, 33 insertions(+) diff --git a/docs/system/qemu-block-drivers.rst.inc b/docs/system/qemu-block-drivers.rst.inc index 105cb9679c..4647c5fa29 100644 --- a/docs/system/qemu-block-drivers.rst.inc +++ b/docs/system/qemu-block-drivers.rst.inc @@ -172,6 +172,39 @@ This section describes each format and the options that are supported for it. filename`` to check if the NOCOW flag is set or not (Capital 'C' is NOCOW flag). + .. option:: zoned + 1 for host-managed zoned device and 0 for a non-zoned device. + + .. option:: zone_size + + The size of a zone in bytes. The device is divided into zones of this + size with the exception of the last zone, which may be smaller. + + .. option:: zone_capacity + + The initial capacity value, in bytes, for all zones. The capacity must + be less than or equal to zone size. If the last zone is smaller, then + its capacity is capped. + + The zone capacity is per zone and may be different between zones in real + devices. For simplicity, QCow2 sets all zones to the same capacity. + + .. option:: zone_nr_conv + + The number of conventional zones of the zoned device. + + .. option:: max_open_zones + + The maximal allowed open zones. + + .. option:: max_active_zones + + The limit of the zones with implicit open, explicit open or closed state. + + .. option:: max_append_sectors + + The maximal number of 512-byte sectors in a zone append request. + .. program:: image-formats .. option:: qed