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envelope-from=Evanzhang@archeros.com; helo=CHN02-SH0-obe.outbound.protection.partner.outlook.cn X-Spam_score_int: -10 X-Spam_score: -1.1 X-Spam_bar: - X-Spam_report: (-1.1 / 5.0 requ) BAYES_00=-1.9, PDS_HP_HELO_NORDNS=0.001, RDNS_NONE=0.793, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Mon, 24 Jul 2023 10:00:13 -0400 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Verification steps: 1.qemu-img create -f qcow2 data1.img 10M qemu-img create -f qcow2 -b data1.img data1.qcow2 2.write 1M data to data1.img 3.create vm use data1.qcow2 as the data disk /usr/libexec/qemu-kvm -M pc,accel=kvm -smp 4 -cpu host -m 4g -drive file=./centos_7.5_64_20200603.qcow2,if=none,id=drive-virtio0,cache=none, aio=native -device virtio-blk-pci,drive=drive-virtio0,id=virtio0 -drive file=./data1.qcow2,if=none,id=drive-virtio1,cache=none,l2-cache-size= 1048576,aio=native -device virtio-blk-pci,drive=drive-virtio1,id=virtio1 -vnc :101 -qmp stdio 4.{"execute": "block-stream", "arguments":{"device":"drive-virtio1"}} 5.kill -9 $(pidof qemu-kvm) 6.md5sum data1.img data1.qcow2,check if it is the same Evanzhang (1): block/stream:add flush l2_table_cache,ensure data integrity block/stream.c | 6 ++++++ 1 file changed, 6 insertions(+) -- 2.9.5