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([2a01:e0a:1f1:c2f1:ddd9:9aa9:1459:42de]) by smtp.gmail.com with ESMTPSA id y20sm92209wmi.25.2020.01.27.13.20.27 for (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 27 Jan 2020 13:20:28 -0800 (PST) To: linux-btrfs@vger.kernel.org From: Pepie 34 Subject: Endless mount and backpointer mismatch Autocrypt: addr=pepie34@gmail.com; prefer-encrypt=mutual; keydata= mQSuBFEmK5ARDAD3XyOHhGTnh2z/tsNq3RYTavJmjYRWA2BsQfLyPEyT56rjhMLUg4zSY0Dq zuBs4LHxqKlazZ2d0VikYdL2Z8+HCsPMpjo729dqAe9seu6estdbuUqGWkNcs0cz9WMaE6Tg C3fYKPQEi4RV05SftH0NQJZciz7KHmqlqy+dyzeaXKaYUnawaJSDn9xjZKGP9nj0sqM5gexC jItK9nLB/TmJqDrGg5TzIjqoYqGg/pLvSDCoZSF6EeyO/Dk/vvf2a5bUBR3QP/OFmapXqAuf EUUuVOhQaW02DMi5Dc8c2Kn0JS1PnN0vJP3kJ6zZD2FmKOwKGuuw30nYkI2nHopbPRXjnc4O 27jb3KK+Fy6jq+VN0JblgdF3bYOC0YrbEaxuA2EW7XtYFY0/T4r+bFKjrbsPnbEaFDbXvONY VjqQwWQDWL0dCjNU0Kft7lOKw5oLumoZOWBenXKTIFa7o6Ah5k8ov33vREFa7FPF0ZI0Ypyf 7zDguseuEEcjkjHo0nhdRWcBANvCEJwLkcAxV+WoPFohK+03vpFX8H5Tp6OtfHyRstBHDADI kO3yn26VfTmsUHGk8WAcfr6CIk1Hc2u/N3mnQ6tROV69WuhM+fuaXNS066qiyhTKSdQmUakZ 6Ws5nWcG0SELjQmPJOS6fi+V+IolEELKFutyxHAwUFuyNdW5WIRm+NoEVF8sjrM4Fb72ZyG2 h6Ysu8i0P/WCRt8OigYdi14XGYS/242CIEGtMj56LdWsc6Xm5KuwkULLqETeb7Dnm5GfXImY IoTNbgiu64jwzQHyeoqFg5GxdteLu2BYuZLtidNipm2GtUyXLxsTJyfLClWGAvTUiqG57IGh o77SQR11e/yixNtPbJnC/eYoTTFPbTjl+cA+LQSWZbPn47t5YG7nPQZY8dO3kwSnxBFFmRBW CK9vxochc+T9JK9NAOVGjXAuv914Hh0PZ1F/hEqdpjt1bS+4W0IzO4fn3F1u8W84uObBqu4p gLo2T/kEQ88/ACroGe3V0F6M9K8OrzgT8uFXeDocXp26tmougzDD9DI0GvU+mm1wvZGm7yxV xFMytlgMALUXBB2Cz67iQY2BmXd94p4yNRfFRJCYS3Yq3iP7d6CbTOkMUovGKQhV4R+6ET5u K1jYtWK+tegEI7n3Mr8xHP3eEWDC3WTjldW+aocfSj9eJ63YCajBmRZnuk9CV0l80e2dnVEM MuzPuru+tnKCD/Y3QoLL4sRvDIfPLLmLab18Y+dPr3PfeaqNpOvLmEiD2dwWRcpeJHzsuNra UhWUXxjwww0ujPTT/c2oybJj8EkL1Z9lFIyECaS5mZrWvdwYLS1dck74cnuSM1rO5c47GoZO CXaTNI15mDpecRp0Cch8ye/JL0gtx8dMenkcTAF+n3OSUJlZuQDyZRy0QZCbv5UolAIE8a37 rVMVmhrJGIryfTw82zI/BSKDzaf1PFLntEJbulZ+HiHu/zGL6c4DJuwXVZLhwFPiAl6X4TpX 7/xB0daQDw81GHQrwOo+67R0s1dJa62k4B8wtomhSotfTLbtJqJd41n/i9EaQ+Ibnh4kyzlC VQw+Nld5bWoUekvGdLQcUGVwaWUgMzQgPHBlcGllMzRAZ21haWwuY29tPoiABBMRCAAoAhsD BgsJCAcDAgYVCAIJCgsEFgIDAQIeAQIXgAUCWniuXwUJEs54oAAKCRBfWXmLLmJQaQFgAP9G V5dG81DWgwppAJ9ePEg4h+5wnGNpCNZZa/AZC+FmpgD/a5XYVKI2fUNLZUm8sLFvo11oAdqA dze+aew6O0KYuem5Aw0EUSYrkBAMAJrIK0qTqZfdTvR7tONeyOd+rO4szdPiceKcG4EjwzD9 s/BusfcEIGmZ/gYbVhbhKdisqaiPAGawW+gDKRfTQjjHE8fmsWJ1JxizCbt4GvmQI9UHmnTj c7YfisLEAEYhx5+WO6wu33w/6yGKVPQy8xB/94qnRCHrx1qy+WfPV8GzifLIRpBRxjdUHbhI PrAqD1x/sjLnQENKanOTdC/R/uGQeqjVY+FyN5QNa/nPSGzL8M8jfw5SnzM2csWtxlh1wju0 Km137idWOd8IR7wrsHzGGreEeqm3mTkgBRiEJwE20v9c3qKiizHQRjdl6hTHPNlPii/Uj5mc FyymVCCkeV5mk1ZKEtdxNA2KFOwEMvTSOqBWHMND/RmFzPBUpJ4PDzih5KoKCRWAyxB1cMk7 l/ZSNPs1xSBzFqg1MWYt9p0XSW7GqT/BsceOXYA3s2Vtkh3iAkAvQprtsyxIkmq+sIt/fjk7 WcIPZnizFgLxVw1Sj5lyAwYdtwZkpokrTsq4jwADBwv+MSI5UaI24555caWGJbfxHuWkKipP uHxXRZ78efC0j32JOp4O1w7IAZMCXQY6VS2dCD6uvQYn1owCBWM6Tj8GczwSFv2r4kLtRfTq Voc6lB/9SE87EfEHKXCp9zfokCYXn6N8NiRjL9tDkF3s7FRv/9PuzqpC3L6phZSOdgg06raz TTylGWHeoe6k+N+UUijIiDvbKQzIK9VXNjlHou8GxWT4ohODvgtAUfB5qicywJcR5pQt4D1P 713UaVpbL3bwcnY8AM1zIicDjPFI2kT3UnTe8d9qP8UQHhG5o4lqb6v94Wgkq9dWw7UjmNQx AbOTviQ9kV4lySRzVhpa+6peYwmDX99EumzP/P4ZZtNVMfyXvZ++BGOkP4FWLXRIQQA7Dsv/ I0OIcXV+P7Voi+h6IAFo8tGLASijsFDVUlpdeYHgF9HGVkJCpwiN33Sfe4zSWB8tgDrssrry hV2tVc1vyD1GGpsLVe8uK0Z4/7V8be3+wJTU7nIWhzjBOz33JXcwiGcEGBEIAA8CGwwFAlp4 rmMFCRLOeKAACgkQX1l5iy5iUGk3QQD+KcTdBEU6/mF2NFYO0VPXW21mLNCaQi3wpdLSXdpe SsMBAK5D2mFcjVB8zVAl2D82QO5Wd9Vq6+HJ1+JdXbddA99t Message-ID: Date: Mon, 27 Jan 2020 22:20:27 +0100 User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.8.1.24) Gecko/20100317 Thunderbird/2.0.0.24 Mnenhy/0.7.5.0 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 8bit Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org Dear BTRFS community, I've a raid 1 setup on two luks encrypted drives for 4 years that serves me as btrbk backup target from an other computer. There is a lot of ro snaptshots on it. I've mistakenly launched a balance on it which was extremely slow and tried to cancelled it. After two days of cancelling without results, I decided to power off the computer. After the reboot, even with the skip_balance mount option, the mounting is endless, no error in the kernel message and it never mounts. What I have done so far: - mount the volume with the ro option (fast to mount, data OK). - scrub in ro mode, no error found - btrfs check In the extent check there is plenty of errors like this : => ref mismatch on [9404816285696 32768] extent item 6, found 5 incorrect local backref count on 9404816285696 parent 5712684302336 owner 0 offset 0 found 0 wanted 1 back 0x55f371ee1ad0 backref disk bytenr does not match extent record, bytenr=9404816285696, ref bytenr=0 backpointer mismatch on [9404816285696 32768] <= No errors in other checks, though checking "quota groups" is very slow. What should I do ? btrfs check --repair ? btrfs check --init-extent-tree ? btrfs --clear-space-cache ? Will the "init extent tree" option break btrfs receive with old snapshot parents ? Best regards, Pepie34