{"action":"created","issue":{"url":"https://api.github.com/repos/zcash/zcash/issues/2228","repository_url":"https://api.github.com/repos/zcash/zcash","labels_url":"https://api.github.com/repos/zcash/zcash/issues/2228/labels{/name}","comments_url":"https://api.github.com/repos/zcash/zcash/issues/2228/comments","events_url":"https://api.github.com/repos/zcash/zcash/issues/2228/events","html_url":"https://github.com/zcash/zcash/issues/2228","id":217771225,"number":2228,"title":"Corruption: block checksum mismatch after clear start","user":{"login":"3junit","id":23376219,"avatar_url":"https://avatars1.githubusercontent.com/u/23376219?v=3","gravatar_id":"","url":"https://api.github.com/users/3junit","html_url":"https://github.com/3junit","followers_url":"https://api.github.com/users/3junit/followers","following_url":"https://api.github.com/users/3junit/following{/other_user}","gists_url":"https://api.github.com/users/3junit/gists{/gist_id}","starred_url":"https://api.github.com/users/3junit/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/3junit/subscriptions","organizations_url":"https://api.github.com/users/3junit/orgs","repos_url":"https://api.github.com/users/3junit/repos","events_url":"https://api.github.com/users/3junit/events{/privacy}","received_events_url":"https://api.github.com/users/3junit/received_events","type":"User","site_admin":false},"labels":[{"id":317477850,"url":"https://api.github.com/repos/zcash/zcash/labels/error%20handling","name":"error handling","color":"e04040","default":false},{"id":587809780,"url":"https://api.github.com/repos/zcash/zcash/labels/fails%20to%20run","name":"fails to run","color":"f319e7","default":false},{"id":479352591,"url":"https://api.github.com/repos/zcash/zcash/labels/user%20support","name":"user support","color":"bfd4f2","default":false}],"state":"closed","locked":false,"assignee":null,"assignees":[],"milestone":null,"comments":8,"created_at":"2017-03-29T05:47:22Z","updated_at":"2017-07-10T17:18:48Z","closed_at":"2017-07-10T17:18:48Z","body":"### Describe the issue\r\nCorruption: block checksum mismatch after clear start \r\n\r\n### Can you reliably reproduce the issue?\r\n#### If so, please list the steps to reproduce below:\r\n1. Start zcash\r\n2. Sync\r\n3. Crash\r\n\r\n### Expected behaviour\r\nRunning node.\r\n\r\n### Actual behaviour + errors\r\nZcash crash after about 30k blocks with Corruption: block checksum mismatch.\r\nhttps://ibb.co/ngYTQa - screen \r\n\r\n### The version of Zcash you were using:\r\nZcash Daemon version v1.0.6 and v1.0.8\r\nCopyright (C) 2009-2017 The Bitcoin Core Developers\r\nCopyright (C) 2015-2017 The Zcash Developers\r\n\r\n### Machine specs:\r\n- OS name + version: Debian\r\n- CPU: Intel(R) Core(TM) i7-6700 CPU @ 3.40GHz\r\n- RAM: 64GB\r\n- Disk size: 2TB\r\n- Disk Type (HD/SDD): HD\r\n- Linux kernel version (uname -a): Linux Debian-85-jessie-64-minimal 3.16.0-4-amd64 #1 SMP Debian 3.16.36-1+deb8u1 (2016-09-03) x86_64 GNU/Linux\r\n- Compiler version (gcc -version): debian binary\r\n\r\n### Any extra information that might be useful in the debugging process.\r\ni share 2 wallet.dat +debug logs with jay@z.cash, daira@z.cash, nathan@z.cash \r\n\r\n\r\ndebug.log\r\n```\r\n2017-03-27 14:07:56 UpdateTip: new best=000000003a5ea371bef80074f2f1fdb6e66a02bc58ab74dcb7990fc07bda9047 height=31489 log2_work=47.005671 tx=182716 date=2016-12-21 15:15:06 progress=0.188306 cache=40.9MiB(1662tx)\r\n2017-03-27 14:07:56 LevelDB read failure: Corruption: block checksum mismatch\r\n2017-03-27 14:07:56 Corruption: block checksum mismatch\r\n2017-03-27 14:07:56 Error: Error reading from database, shutting down.\r\n2017-03-27 14:07:56 Error reading from database: Database corrupted\r\n```\r\n\r\n\r\n\r\ndebug.log\r\n```\r\neb51985a1d5be7244c180e46 height=31450 log2_work=47.002788 tx=182533 date=2016-12-21 14:04:16 progress=0.186867 cache=56.5MiB(5193tx)\r\n2017-03-28 06:17:41 UpdateTip: new best=00000000689442684612dfe4f86c843e0a7b8894fc35c1d306ddf3c8c84bacea height=31451 log2_work=47.002861 tx=182536 date=2016-12-21 14:06:42 progress=0.186875 cache=56.5MiB(5195tx)\r\n2017-03-28 06:17:41 UpdateTip: new best=0000000046b8f7bdbe176c6f88c215908710641ef91c3a7527ca474f55698df2 height=31452 log2_work=47.002933 tx=182540 date=2016-12-21 14:09:51 progress=0.186884 cache=59.5MiB(5275tx)\r\n2017-03-28 06:17:42 Corruption: block checksum mismatch\r\n2017-03-28 06:17:42 *** System error while flushing: Database corrupted\r\n2017-03-28 06:17:42 Error: Error: A fatal internal error occurred, see debug.log for details\r\n2017-03-28 06:17:42 ERROR: ProcessNewBlock: ActivateBestChain failed\r\n```"},"comment":{"url":"https://api.github.com/repos/zcash/zcash/issues/comments/314174240","html_url":"https://github.com/zcash/zcash/issues/2228#issuecomment-314174240","issue_url":"https://api.github.com/repos/zcash/zcash/issues/2228","id":314174240,"user":{"login":"ioptio","id":1091212,"avatar_url":"https://avatars1.githubusercontent.com/u/1091212?v=3","gravatar_id":"","url":"https://api.github.com/users/ioptio","html_url":"https://github.com/ioptio","followers_url":"https://api.github.com/users/ioptio/followers","following_url":"https://api.github.com/users/ioptio/following{/other_user}","gists_url":"https://api.github.com/users/ioptio/gists{/gist_id}","starred_url":"https://api.github.com/users/ioptio/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/ioptio/subscriptions","organizations_url":"https://api.github.com/users/ioptio/orgs","repos_url":"https://api.github.com/users/ioptio/repos","events_url":"https://api.github.com/users/ioptio/events{/privacy}","received_events_url":"https://api.github.com/users/ioptio/received_events","type":"User","site_admin":false},"created_at":"2017-07-10T17:18:48Z","updated_at":"2017-07-10T17:18:48Z","body":"Closing this ticket due to inactivity + probable hardware memory limits for user. Feel free to reopen if this problem persists."}}
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