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[Solved] ORPHAN BLOCK 751 Blockchain Sync Stuck.


  • Moderators

    Hey Guys,

    I’m syncing 0.9.3.2

    What happens is the blockchain starts syncing normally and gets through a few weeks… and then I get tons of these:

    
    2016-07-10 13:58:16 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:16 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=c67a17ae6fe49b7dbde87caac5babcfe72a5800b90a12c87bafea6f207285299
    2016-07-10 13:58:16 ProcessBlock: Preliminary checks
    2016-07-10 13:58:16 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:16 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=0de30384a16180e8d897143d787f544635d0a56ec2678fb354a009396ebb28ac
    2016-07-10 13:58:16 ProcessBlock: Preliminary checks
    2016-07-10 13:58:16 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:16 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=73d228efdb4f9ed6f7588a5da92f78084454c90dad010ed161f4ed819c49170f
    2016-07-10 13:58:17 ProcessBlock: Preliminary checks
    2016-07-10 13:58:17 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:17 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=35aa6431b48f8f7d8b9b4b19008904388692c4a19e77e60eeb351e7b7c49d4ca
    2016-07-10 13:58:17 ProcessBlock: Preliminary checks
    2016-07-10 13:58:17 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:17 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=de5781e2b033b253fdd17a3bf888f07404f1e6ea71f12d24b7a668db5d217dce
    2016-07-10 13:58:17 ProcessBlock: Preliminary checks
    2016-07-10 13:58:17 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:17 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=1d23a03b11f029efbbd73494adebea783f3904fb04ab09ecd153690dd746c4e0
    2016-07-10 13:58:17 ProcessBlock: Preliminary checks
    2016-07-10 13:58:17 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:17 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=5f0d18bc5ea4c94c715e0a2abd86e7610f6da54a2fc4548493cc5161efd221cd
    2016-07-10 13:58:19 ProcessBlock: Preliminary checks
    2016-07-10 13:58:19 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=8d722ef00679879453b3f294f1b710bcb4317b9c4bae07026231cabcdd6f60c0
    2016-07-10 13:58:20 ProcessBlock: Preliminary checks
    2016-07-10 13:58:20 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=935c50579a365c3e711de5525afe0b59e2c8f5135bd669daf15a5b2b25e0b4d5
    2016-07-10 13:58:21 ProcessBlock: Preliminary checks
    2016-07-10 13:58:21 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 13:58:21 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=d3aa107d1d4aaeb6ff04853b33117189c0b333c84edcb2fd8ee3e697888d7809
    
    

    the entire debug log will just fill with those errors.

    if I restart Feathercoin, the blockchain starts syncing normally for a while and then it happens again

    Currently at 2 years and 29 weeks.


  • Moderators

    also getting this…

    
    2016-07-10 14:57:24 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 14:57:24 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=d58a3f5e4e7677e603fdd0bf7b6f43ef2a0b0fc0c58c8805d982f39935999a92
    2016-07-10 14:57:25 Receive checkpoint,hashCheckpoint=0000000000000000000000000000000000000000000000000000000000000000
    .CSyncCheckpoint::ProcessSyncCheckpoint 100,hashCheckpoint=2aa1977f2126c96a0de3b454a12a7d0ce90661bbcb1ec0a116542a68da29f9b1
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 110,mapBlockIndex.count=0
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 130: pending for sync-checkpoint 2aa1977f2126c96a0de3b454a12a7d0ce90661bbcb1ec0a116542a68da29f9b1
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 140 ,AskFor.
    2016-07-10 14:57:25 Receive checkpoint,hashCheckpoint=0000000000000000000000000000000000000000000000000000000000000000
    .CSyncCheckpoint::ProcessSyncCheckpoint 100,hashCheckpoint=2aa1977f2126c96a0de3b454a12a7d0ce90661bbcb1ec0a116542a68da29f9b1
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 110,mapBlockIndex.count=0
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 130: pending for sync-checkpoint 2aa1977f2126c96a0de3b454a12a7d0ce90661bbcb1ec0a116542a68da29f9b1
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 140 ,AskFor.
    2016-07-10 14:57:25 ProcessBlock: Preliminary checks
    2016-07-10 14:57:25 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 14:57:25 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=3bc3b0d493339a075d81262c3a4df461af4eab9b1fca8bc41dc003af653be49e
    2016-07-10 14:57:25 Receive checkpoint,hashCheckpoint=0000000000000000000000000000000000000000000000000000000000000000
    .CSyncCheckpoint::ProcessSyncCheckpoint 100,hashCheckpoint=2aa1977f2126c96a0de3b454a12a7d0ce90661bbcb1ec0a116542a68da29f9b1
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 110,mapBlockIndex.count=0
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 130: pending for sync-checkpoint 2aa1977f2126c96a0de3b454a12a7d0ce90661bbcb1ec0a116542a68da29f9b1
    2016-07-10 14:57:25 CSyncCheckpoint::ProcessSyncCheckpoint 140 ,AskFor.
    2016-07-10 14:57:27 ProcessBlock: Preliminary checks
    2016-07-10 14:57:27 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 14:57:27 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=8ba7b1a11e5ec29cd68dc55af70316eb2afa4e23284d191fa21427618286069f
    2016-07-10 14:57:28 ProcessBlock: Preliminary checks
    2016-07-10 14:57:28 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 14:57:28 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=5311b9f37761232523104140bf96e43335c350f028b1f4c31c77f2c2c4f9ea2b
    2016-07-10 14:57:29 ProcessBlock: Preliminary checks
    2016-07-10 14:57:29 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    2016-07-10 14:57:29 ProcessBlock() ProcessBlock: ORPHAN BLOCK 751, prev=0e125585807e98cab3364fbfe4ccefad5fd74848ec218af8b7f691548d145bcf
    2016-07-10 14:57:29 ProcessBlock: Preliminary checks
    2016-07-10 14:57:29 ERROR: matches claimed amount, CheckProofOfWork() : hash doesn't match nBits
    
    

  • Moderators

    @lizhi

    Re: Testing 0.9.3.2 - Full Re-synchronisation :

    Whilst I haven’t had to restart like @Aciddude, the debug.log has now hit 2.6GB with the messages.


  • Moderators

    Blockchain sync in 3 hours. I had to restart the client multiple times, basically every time I got the error I previously posted.

    the debug log grows massively with this error.


  • Moderators

    @wrapper said in ORPHAN BLOCK 751 Blockchain Sync Stuck.:

    @lizhi

    Re: Testing 0.9.3.2 - Full Re-synchronisation :

    Whilst I haven’t had to restart like @Aciddude, the debug.log has now hit 2.6GB with the messages.

    Do a ‘cat >> debug.log’ followed by a 'ctrl-c’
    This will empty the logfile, even while the client is running


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