Re: Bitcoin-qt cannot read the database, closing

Re-Post: Full section of debug log showing "registerShutdownBlockReason: Successfully registered: Bitcoin Core didn't yet exit safely..." message from GUI. 5-6 lines from the top, following application re-start after clean shutdown. (Some of my personal comments have been modified. But log is intact.) Shutdown due to corrupt database is at the very end of the post.

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Below is the portion of the debug.log that was recorded immediately after the 16.59.34 restart. First line (after the 20 linefeeds, mentioned above) captures the version of the BitCoin-QT app.

5 lines into the text, the GUI reports that Bitcoin Core "...didn't yet exit safely...". My initial knee-jerk reaction is: "What? Bitcoin-QT requires more than 7 hours to shutdown safely?" My second reaction is: Hmm. Looks like the app left something open, or else some of the shutdown status flags were not saved correctly.

Unfortunately, I know nothing about the internals of BitCoin-QT. Anybody out there know enough to comment on the unsafe shutdown message in the log?

New comment: I will try to reproduce the unwanted behavior. It may take a few days.

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2018-01-04 16:59:34 Bitcoin version v0.15.1
2018-01-04 16:59:34 InitParameterInteraction: parameter interaction: -whitelistforcerelay=1 -> setting -whitelistrelay=1
2018-01-04 16:59:34 Assuming ancestors of block 0000000000000000003b9ce759c2a087d52abc4266f8f4ebd6d768b89defa50a have valid signatures.
2018-01-04 16:59:34 Setting nMinimumChainWork=000000000000000000000000000000000000000000723d3581fe1bd55373540a
2018-01-04 16:59:34 Using the 'standard' SHA256 implementation
2018-01-04 16:59:35 GUI: "registerShutdownBlockReason: Successfully registered: Bitcoin Core didn't yet exit safely..."
2018-01-04 16:59:38 Default data directory C:\Users\michaelt\AppData\Roaming\Bitcoin
2018-01-04 16:59:38 Using data directory Q:\qt_bitcoin
2018-01-04 16:59:38 Using config file Q:\qt_bitcoin\bitcoin.conf
2018-01-04 16:59:38 Using at most 125 automatic connections (2048 file descriptors available)
2018-01-04 16:59:38 Using 16 MiB out of 32/2 requested for signature cache, able to store 524288 elements
2018-01-04 16:59:38 Using 16 MiB out of 32/2 requested for script execution cache, able to store 524288 elements
2018-01-04 16:59:38 Using 0 threads for script verification
2018-01-04 16:59:38 init message: Verifying wallet(s)...
2018-01-04 16:59:38 scheduler thread start
2018-01-04 16:59:38 Using BerkeleyDB version Berkeley DB 4.8.30: (April 9, 2010)
2018-01-04 16:59:38 Using wallet wallet.dat
2018-01-04 16:59:38 CDBEnv::Open: LogDir=Q:\qt_bitcoin\database ErrorFile=Q:\qt_bitcoin\db.log
2018-01-04 16:59:38 Cache configuration:
2018-01-04 16:59:38 * Using 2.0MiB for block index database
2018-01-04 16:59:38 * Using 8.0MiB for chain state database
2018-01-04 16:59:38 * Using 1014.0MiB for in-memory UTXO set (plus up to 286.1MiB of unused mempool space)
2018-01-04 16:59:38 init message: Loading block index...
2018-01-04 16:59:38 Opening LevelDB in Q:\qt_bitcoin\blocks\index
2018-01-04 16:59:39 Opened LevelDB successfully
2018-01-04 16:59:39 Using obfuscation key for Q:\qt_bitcoin\blocks\index: 0000000000000000
2018-01-04 16:59:48 LoadBlockIndexDB: last block file = 671
2018-01-04 16:59:48 LoadBlockIndexDB: last block file info: CBlockFileInfo(blocks=127, size=95867971, heights=437521...437745, time=2016-11-05...2016-11-07)
2018-01-04 16:59:48 Checking all blk files are present...
2018-01-04 16:59:49 LoadBlockIndexDB: transaction index disabled
2018-01-04 16:59:49 Opening LevelDB in Q:\qt_bitcoin\chainstate
2018-01-04 16:59:50 Opened LevelDB successfully
2018-01-04 16:59:50 Using obfuscation key for Q:\qt_bitcoin\chainstate: 96d278477b272041
2018-01-04 16:59:50 Loaded best chain: hashBestChain=00000000000000000074136a39836a35fdb36a872339d3b036cb10b28b6876ed height=437681 date=2016-11-07 00:11:23 progress=0.591842
2018-01-04 16:59:50 init message: Rewinding blocks...
2018-01-04 16:59:53 init message: Verifying blocks...
2018-01-04 16:59:53 Verifying last 6 blocks at level 3
2018-01-04 16:59:53 [0%]...[16%]...[33%]...[50%]...[66%]...[83%]...[99%]...[DONE].
2018-01-04 17:00:10 No coin database inconsistencies in last 7 blocks (10843 transactions)
2018-01-04 17:00:10 block index 31304ms
2018-01-04 17:00:10 init message: Loading wallet...
2018-01-04 17:00:10 nFileVersion = 150100
2018-01-04 17:00:10 Keys: 2002 plaintext, 0 encrypted, 2002 w/ metadata, 2002 total
2018-01-04 17:00:10 wallet 215ms
2018-01-04 17:00:10 setKeyPool.size() = 2000
2018-01-04 17:00:10 mapWallet.size() = 0
2018-01-04 17:00:10 mapAddressBook.size() = 1
2018-01-04 17:00:10 mapBlockIndex.size() = 502513
2018-01-04 17:00:10 nBestHeight = 437681
2018-01-04 17:00:10 Imported mempool transactions from disk: 0 successes, 0 failed, 0 expired
2018-01-04 17:00:10 torcontrol thread start
2018-01-04 17:00:10 Bound to [::]:8333
2018-01-04 17:00:10 Bound to 0.0.0.0:8333
2018-01-04 17:00:10 init message: Loading P2P addresses...
2018-01-04 17:00:10 Loaded 65418 addresses from peers.dat 550ms
2018-01-04 17:00:10 init message: Loading banlist...
2018-01-04 17:00:10 init message: Starting network threads...
2018-01-04 17:00:10 net thread start
2018-01-04 17:00:10 init message: Done loading
2018-01-04 17:00:10 dnsseed thread start
2018-01-04 17:00:10 addcon thread start
2018-01-04 17:00:10 opencon thread start
2018-01-04 17:00:10 msghand thread start
2018-01-04 17:00:10 GUI: Platform customization: "windows"
2018-01-04 17:00:10 GUI: PaymentServer::LoadRootCAs: Loaded 51 root certificates
2018-01-04 17:00:21 Loading addresses from DNS seeds (could take a while)
2018-01-04 17:00:22 139 addresses found from DNS seeds
2018-01-04 17:00:22 dnsseed thread exit
2018-01-04 17:00:33 receive version message: /Satoshi:0.15.1/: version 70015, blocks=502567, us=50.38.113.130:54521, peer=0
2018-01-04 17:00:40 receive version message: /Satoshi:0.15.1/: version 70015, blocks=502567, us=50.38.113.130:54527, peer=1
2018-01-04 17:00:42 Pre-allocating up to position 0x900000 in rev00671.dat
2018-01-04 17:00:42 UpdateTip: new best=000000000000000003736fb238a27d9465e0e5b9b7293bc43781ee121896b94b height=437682 version=0x20000000 log2_work=85.507653 tx=168638786 date='2016-11-07 00:48:46' progress=0.591851 cache=1.0MiB(9004txo)
2018-01-04 17:00:43 UpdateTip: new best=0000000000000000018aed817cad0210ae279e16846e3cadb05e37924848077c height=437683 version=0x20000000 log2_work=85.507682 tx=168641192 date='2016-11-07 00:53:47' progress=0.591860 cache=1.9MiB(16519txo)
2018-01-04 17:00:44 UpdateTip: new best=0000000000000000038ac7709c75b5a2416a88338e75e6026328cfc7cca64c37 height=437684 version=0x20000000 log2_work=85.507711 tx=168643681 date='2016-11-07 01:29:59' progress=0.591869 cache=2.5MiB(22339txo)
2018-01-04 17:00:45 UpdateTip: new best=0000000000000000018d29a7d972326f050aa159756cfc6789d781aeeb273e16 height=437685 version=0x20000000 log2_work=85.507739 tx=168645399 date='2016-11-07 01:29:49' progress=0.591875 cache=3.1MiB(28010txo)
2018-01-04 17:00:46 UpdateTip: new best=0000000000000000023a5dc70740498bbd31c0baf49384e174682290522908ab height=437686 version=0x20000000 log2_work=85.507768 tx=168647400 date='2016-11-07 01:31:55' progress=0.591882 cache=3.9MiB(34533txo)
2018-01-04 17:00:47 UpdateTip: new best=00000000000000000217d4d6b6e7aff5f3b0688b9c1e9417429d32dd056fc5e1 height=437687 version=0x20000000 log2_work=85.507797 tx=168649259 date='2016-11-07 01:42:12' progress=0.591888 cache=4.4MiB(39411txo)
2018-01-04 17:00:48 UpdateTip: new best=00000000000000000237de7fb25dff1a5017ab7ad6c0c99e835ad831aeee57a6 height=437688 version=0x20000000 log2_work=85.507825 tx=168651391 date='2016-11-07 01:54:40' progress=0.591896 cache=5.1MiB(45346txo)
2018-01-04 17:00:49 UpdateTip: new best=000000000000000000da4d7991f5ffae9926a00085fc79e79408ea8b1db61a49 height=437689 version=0x20000000 log2_work=85.507854 tx=168652562 date='2016-11-07 01:55:48' progress=0.591900 cache=6.2MiB(55908txo)
2018-01-04 17:00:50 UpdateTip: new best=00000000000000000354c67ed12386b00e39dfbb62df55110e4ccdbedbb751df height=437690 version=0x20000000 log2_work=85.507883 tx=168655027 date='2016-11-07 02:28:32' progress=0.591908 cache=6.7MiB(60380txo)
2018-01-04 17:00:51 Pre-allocating up to position 0xa00000 in rev00671.dat
2018-01-04 17:00:51 UpdateTip: new best=000000000000000000def58b719d8da750ed4754a5f71cc372684407c83d2584 height=437691 version=0x20000000 log2_work=85.507911 tx=168657161 date='2016-11-07 02:29:25' progress=0.591916 cache=7.6MiB(66316txo)
2018-01-04 17:00:52 UpdateTip: new best=00000000000000000009561c636c3d5d6a0474da3a5226b20c918bdbafa32e3e height=437692 version=0x20000000 log2_work=85.50794 tx=168658654 date='2016-11-07 02:37:21' progress=0.591921 cache=8.0MiB(70176txo)
2018-01-04 17:00:52 UpdateTip: new best=000000000000000000fafc2ec0ccf2df5ce6ba6aa7c68a1c1fe035ed778b3ee2 height=437693 version=0x20000000 log2_work=85.507969 tx=168660864 date='2016-11-07 02:53:10' progress=0.591929 cache=8.4MiB(74192txo)
2018-01-04 17:00:53 UpdateTip: new best=0000000000000000043a207bd780207bffe830265f9c31db1e6afc71b39c5213 height=437694 version=0x20000000 log2_work=85.507997 tx=168662633 date='2016-11-07 03:05:30' progress=0.591935 cache=9.4MiB(83099txo)
2018-01-04 17:00:53 UpdateTip: new best=00000000000000000172afd5249d2502b8fd422abd99003ccada74df488fd2e5 height=437695 version=0x00000004 log2_work=85.508026 tx=168663222 date='2016-11-07 03:09:17' progress=0.591937 cache=9.7MiB(86342txo)
2018-01-04 17:00:54 UpdateTip: new best=0000000000000000020005ce401726949ae5302c472a8a835d348989d0c999f0 height=437696 version=0x20000000 log2_work=85.508055 tx=168664304 date='2016-11-07 03:15:27' progress=0.591941 cache=10.2MiB(90970txo)
2018-01-04 17:00:54 UpdateTip: new best=000000000000000003e0af361d432ab783a599449f80600bc5be8c6870e64d69 height=437697 version=0x20000000 log2_work=85.508083 tx=168664774 date='2016-11-07 03:18:44' progress=0.591943 cache=10.4MiB(93029txo)
2018-01-04 17:00:54 UpdateTip: new best=0000000000000000043601a83cc2e01140490b7685d6d063231db3fe91604601 height=437698 version=0x20000000 log2_work=85.508112 tx=168665774 date='2016-11-07 03:24:23' progress=0.591946 cache=10.6MiB(94316txo)
2018-01-04 17:00:55 UpdateTip: new best=0000000000000000008159b25b63be642e3e9e0691248ef1541d65884598e4b7 height=437699 version=0x20000000 log2_work=85.508141 tx=168667942 date='2016-11-07 03:40:30' progress=0.591954 cache=11.0MiB(98411txo)
2018-01-04 17:00:56 UpdateTip: new best=00000000000000000051718250ac61e9cd97af1e3309e301574b365b1c62e8c1 height=437700 version=0x20000000 log2_work=85.508169 tx=168668659 date='2016-11-07 03:42:43' progress=0.591956 cache=11.6MiB(103900txo)
2018-01-04 17:00:57 Pre-allocating up to position 0xb00000 in rev00671.dat
2018-01-04 17:00:57 UpdateTip: new best=0000000000000000034dfc747e0914b3639096538632ac05b85e9088eae95a70 height=437701 version=0x20000000 log2_work=85.508198 tx=168670820 date='2016-11-07 03:58:09' progress=0.591964 cache=12.0MiB(107646txo)
2018-01-04 17:00:58 UpdateTip: new best=000000000000000003401c4a21a7f12a3977b6e74f489009d85cecd5340cf94a height=437702 version=0x20000000 log2_work=85.508227 tx=168672596 date='2016-11-07 04:11:48' progress=0.591970 cache=12.4MiB(111329txo)
2018-01-04 17:00:58 receive version message: /Satoshi:0.15.99/: version 70015, blocks=502567, us=50.38.113.130:54537, peer=2
2018-01-04 17:00:59 UpdateTip: new best=000000000000000001d2f8a19e200c6271a2a6f90105aab16a930202fa1b8e5a height=437703 version=0x20000000 log2_work=85.508255 tx=168673719 date='2016-11-07 04:17:08' progress=0.591974 cache=12.8MiB(115557txo)
2018-01-04 17:00:59 UpdateTip: new best=00000000000000000378c3d9e009669ebb45977747670d6e4bff2087505ed7eb height=437704 version=0x20000000 log2_work=85.508284 tx=168674980 date='2016-11-07 04:25:59' progress=0.591978 cache=13.1MiB(117994txo)
2018-01-04 17:01:00 UpdateTip: new best=0000000000000000043a742c320c9a93ed8ace62d5a7b50fba6259b497454918 height=437705 version=0x20000000 log2_work=85.508313 tx=168675841 date='2016-11-07 04:30:58' progress=0.591981 cache=13.2MiB(119504txo)
2018-01-04 17:01:00 UpdateTip: new best=000000000000000000dcf1e86060cb7e635ac136fa7d77ca31db4882a2ccbe8e height=437706 version=0x20000000 log2_work=85.508342 tx=168677171 date='2016-11-07 04:39:23' progress=0.591986 cache=13.5MiB(122120txo)
2018-01-04 17:01:00 UpdateTip: new best=000000000000000001ef0ba8a0d1a4f0309cfcc04a4d4f0e534df5594d5bba1b height=437707 version=0x20000000 log2_work=85.50837 tx=168677476 date='2016-11-07 04:40:58' progress=0.591987 cache=13.6MiB(122504txo)
2018-01-04 17:01:01 UpdateTip: new best=000000000000000000ea1b8ed8f5d066e27f473392dfad5b6143b5f6f1915ae4 height=437708 version=0x20000000 log2_work=85.508399 tx=168678754 date='2016-11-07 04:50:14' progress=0.591992 cache=13.8MiB(124801txo)
2018-01-04 17:01:01 UpdateTip: new best=0000000000000000026e830834b8a1f6439342af76e75f22d63a96ae71efa6a7 height=437709 version=0x20000000 log2_work=85.508428 tx=168680305 date='2016-11-07 04:58:56' progress=0.591997 cache=14.7MiB(128671txo)
2018-01-04 17:01:02 UpdateTip: new best=00000000000000000195221ac3a4682e02c0ae82c7780220dab7a6679151de54 height=437710 version=0x20000000 log2_work=85.508456 tx=168682825 date='2016-11-07 05:20:11' progress=0.592006 cache=15.3MiB(133749txo)
2018-01-04 17:01:03 UpdateTip: new best=0000000000000000034dde56267aa664e511ea82f5f11dd5d9d92f05430d3f21 height=437711 version=0x20000000 log2_work=85.508485 tx=168684612 date='2016-11-07 05:28:20' progress=0.592012 cache=15.7MiB(137861txo)
2018-01-04 17:01:03 Pre-allocating up to position 0xc00000 in rev00671.dat
2018-01-04 17:01:03 UpdateTip: new best=00000000000000000157e244f59c6d96ddae09d4042f6a2f0d934a94c78e519b height=437712 version=0x20000000 log2_work=85.508514 tx=168685225 date='2016-11-07 05:31:26' progress=0.592014 cache=15.8MiB(138670txo)
2018-01-04 17:01:04 receive version message: /Satoshi:0.15.1/: version 70015, blocks=502567, us=50.38.113.130:54542, peer=3
2018-01-04 17:01:05 receive version message: /Satoshi:0.13.1/: version 70014, blocks=502567, us=50.38.113.130:54545, peer=4
2018-01-04 17:01:06 receive version message: /Satoshi:0.15.1/: version 70015, blocks=502567, us=50.38.113.130:54546, peer=5
2018-01-04 17:01:12 UpdateTip: new best=0000000000000000006d2794b477ec8f31ca65312702c8d7204f998aa3f9c0ee height=437713 version=0x20000000 log2_work=85.508542 tx=168686072 date='2016-11-07 05:35:24' progress=0.592017 cache=16.2MiB(142786txo)
2018-01-04 17:01:12 UpdateTip: new best=00000000000000000400446fcdb4adf325c6c601cf68224df06307058c832270 height=437714 version=0x20000000 log2_work=85.508571 tx=168686891 date='2016-11-07 05:41:32' progress=0.592020 cache=16.4MiB(144244txo)
2018-01-04 17:01:12 receive version message: /Satoshi:0.13.1/: version 70014, blocks=502567, us=50.38.113.130:54549, peer=6
2018-01-04 17:01:13 receive version message: /Satoshi:0.15.1/: version 70015, blocks=502567, us=50.38.113.130:54550, peer=7
2018-01-04 17:01:19 Pre-allocating up to position 0x7000000 in blk00671.dat
2018-01-04 17:01:26 UpdateTip: new best=000000000000000002968cbbe6cd7172533e48a65e7d6a8ce39a6bfe9a7a50e0 height=437715 version=0x20000000 log2_work=85.5086 tx=168687796 date='2016-11-07 05:46:37' progress=0.592023 cache=16.6MiB(145944txo)
2018-01-04 17:01:26 UpdateTip: new best=00000000000000000423452eedf1458866674161ad8be52178b18bde0c0b7fd0 height=437716 version=0x20000000 log2_work=85.508628 tx=168688548 date='2016-11-07 05:51:30' progress=0.592026 cache=16.7MiB(147212txo)
2018-01-04 17:01:34 UpdateTip: new best=00000000000000000364a19d4e936a365606ebc8a4ed84a727ae13ddd8db4a7c height=437717 version=0x20000000 log2_work=85.508657 tx=168689608 date='2016-11-07 05:58:59' progress=0.592029 cache=16.9MiB(149033txo)
2018-01-04 17:01:34 UpdateTip: new best=000000000000000002dc25552c59000d8f374bec25ae76d0636e1abe55b2d1bf height=437718 version=0x30000000 log2_work=85.508686 tx=168689700 date='2016-11-07 05:59:31' progress=0.592030 cache=16.9MiB(149102txo)
2018-01-04 17:01:36 UpdateTip: new best=00000000000000000444290761e7512c86a1b009b4e42b62df54f9e2d9549ac9 height=437719 version=0x20000000 log2_work=85.508714 tx=168690365 date='2016-11-07 06:02:56' progress=0.592032 cache=17.5MiB(154684txo)
2018-01-04 17:01:36 UpdateTip: new best=0000000000000000032ffac28d07f3b10e090843aa78cc9d273d4c26350a6bec height=437720 version=0x20000000 log2_work=85.508743 tx=168690873 date='2016-11-07 06:05:58' progress=0.592034 cache=17.6MiB(155645txo)
2018-01-04 17:01:36 UpdateTip: new best=0000000000000000037c58a5ed94fe7fed52c81b165ed49fddfea4ebc6859004 height=437721 version=0x20000000 log2_work=85.508772 tx=168691507 date='2016-11-07 06:09:41' progress=0.592036 cache=17.7MiB(156819txo)
2018-01-04 17:01:38 UpdateTip: new best=0000000000000000007a04e9b741396c43cec1249dec9d216a4e54707b3ee0f0 height=437722 version=0x20000000 log2_work=85.5088 tx=168693285 date='2016-11-07 06:21:30' progress=0.592042 cache=18.3MiB(161789txo)
2018-01-04 17:01:54 LevelDB read failure: Corruption: block checksum mismatch
2018-01-04 17:01:54 Corruption: block checksum mismatch
2018-01-04 17:02:08 Error reading from database: Database corrupted
2018-01-04 17:03:00