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<channel>
    <title>MongoDB Jira</title>
    <link>https://jira.mongodb.org</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.7.1</version>
        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
    </build-info>


<item>
            <title>[SERVER-41449] WiredTiger error (-31804)</title>
                <link>https://jira.mongodb.org/browse/SERVER-41449</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hi!&#160;My mongoDB can not&#160; start after my computer suddenly loses power, and I have no idea how to fix it, when I tried to restart it, the error appears:&lt;/p&gt;

&lt;p&gt;2019-06-01T14:26:02.393+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;main&amp;#93;&lt;/span&gt; ***** SERVER RESTARTED *****&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; MongoDB starting : pid=3768 port=27017 dbpath=D:\MongoDB\data 64-bit host=zzq-PC&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; targetMinOS: Windows 7/Windows Server 2008 R2&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; db version v3.6.3&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; git version: 9586e557d54ef70f9ca4b43c26892cd55257e1a5&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; OpenSSL version: OpenSSL 1.0.1u-fips 22 Sep 2016&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; allocator: tcmalloc&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; modules: none&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; build environment:&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; distmod: 2008plus-ssl&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; distarch: x86_64&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; target_arch: x86_64&lt;br/&gt;
2019-06-01T14:26:04.250+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; options: { config: &quot;C:\Program Files\MongoDB\Server\3.6\config\mongod.cfg&quot;, net: &lt;/p&gt;
{ bindIp: &quot;0.0.0.0&quot;, port: 27017 }
&lt;p&gt;, processManagement: { windowsService: &lt;/p&gt;
{ description: &quot;Hahahaaa,MongoDB!&quot;, displayName: &quot;MongoDB Service&quot;, serviceName: &quot;MongoDB&quot; }
&lt;p&gt; }, storage: { dbPath: &quot;D:\MongoDB\data&quot;, directoryPerDB: true, wiredTiger: { engineConfig: &lt;/p&gt;
{ cacheSizeGB: 4.0 }
&lt;p&gt; } }, systemLog: { destination: &quot;file&quot;, logAppend: true, path: &quot;D:\MongoDB\logs\mongo.log&quot; } }&lt;br/&gt;
2019-06-01T14:26:04.251+0800 W - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Detected unclean shutdown - D:\MongoDB\data\mongod.lock is not empty.&lt;br/&gt;
2019-06-01T14:26:04.251+0800 I - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Detected data files in D:\MongoDB\data created by the &apos;wiredTiger&apos; storage engine, so setting the active storage engine to &apos;wiredTiger&apos;.&lt;br/&gt;
2019-06-01T14:26:04.251+0800 W STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Recovering data from the last clean checkpoint.&lt;br/&gt;
2019-06-01T14:26:04.252+0800 I STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; wiredtiger_open config: create,cache_size=4096M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=(recovery_progress),&lt;br/&gt;
2019-06-01T14:26:04.265+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559370364:265216&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;3768:2001878752&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:WiredTiger.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:WiredTiger.wt&lt;/a&gt;, connection: WiredTiger.turtle: encountered an illegal file format or internal value: (__wt_turtle_read, 291)&lt;br/&gt;
2019-06-01T14:26:04.265+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (-31804) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559370364:265216&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;3768:2001878752&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:WiredTiger.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:WiredTiger.wt&lt;/a&gt;, connection: the process must exit and restart: WT_PANIC: WiredTiger library panic&lt;br/&gt;
2019-06-01T14:26:04.265+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Fatal Assertion 28558 at src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp 361&lt;br/&gt;
2019-06-01T14:26:04.265+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt;&lt;/p&gt;

&lt;p&gt;***aborting after fassert() failure&lt;/p&gt;


&lt;p&gt;2019-06-01T14:26:04.588+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\util\stacktrace_windows.cpp(244) mongo::printStackTrace+0x67x&lt;br/&gt;
2019-06-01T14:26:04.589+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\util\signal_handlers_synchronous.cpp(182) mongo::`anonymous namespace&apos;::printSignalAndBacktrace+0x116x&lt;br/&gt;
2019-06-01T14:26:04.589+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\util\signal_handlers_synchronous.cpp(238) mongo::`anonymous namespace&apos;::abruptQuit+0x133x&lt;br/&gt;
2019-06-01T14:26:04.589+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ucrtbase.DLL raise+0x488x&lt;br/&gt;
2019-06-01T14:26:04.591+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ucrtbase.DLL abort+0x49x&lt;br/&gt;
2019-06-01T14:26:04.591+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\util\assert_util.cpp(148) mongo::fassertFailedWithLocation+0x385x&lt;br/&gt;
2019-06-01T14:26:04.591+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp(361) mongo::`anonymous namespace&apos;::mdb_handle_error+0x332x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(277) __eventv+0x897x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(330) __wt_err+0x50x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(578) __wt_illegal_value_func+0x126x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_turtle.c(291) __wt_turtle_read+0x719x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(281) __wt_metadata_search+0x663x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(48) __conn_dhandle_config_set+0x34x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(437) __wt_conn_dhandle_open+0x117x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(546) __wt_session_get_dhandle+0x278x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(538) __wt_session_get_dhandle+0x475x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(351) __wt_session_get_btree_ckpt+0x196x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\cursor\cur_file.c(692) __wt_curfile_open+0x441x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(389) __session_open_cursor_int+0x759x&lt;br/&gt;
2019-06-01T14:26:04.592+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(444) __wt_open_cursor+0x27x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(92) __wt_metadata_cursor+0x153x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_api.c(2676) wiredtiger_open+0x3050x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_kv_engine.cpp(409) mongo::WiredTigerKVEngine::WiredTigerKVEngine+0x2490x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_init.cpp(91) mongo::`anonymous namespace&apos;::WiredTigerFactory::create+0x296x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\service_context_d.cpp(202) mongo::ServiceContextMongoD::initializeGlobalStorageEngine+0x1362x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\db.cpp(745) mongo::`anonymous namespace&apos;::_initAndListen+0x1716x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\db.cpp(1051) mongo::`anonymous namespace&apos;::initAndListen+0x39x&lt;br/&gt;
2019-06-01T14:26:04.593+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\db.cpp(1404) mongo::mongoDbMain+0x414x&lt;br/&gt;
2019-06-01T14:26:04.594+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\dbmain.cpp(45) wmain+0x53x&lt;br/&gt;
2019-06-01T14:26:04.594+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl(253) __scrt_common_main_seh+0x285x&lt;br/&gt;
2019-06-01T14:26:04.594+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; kernel32.dll BaseThreadInitThunk+0x13x&lt;br/&gt;
2019-06-01T14:26:04.594+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Got signal: 22 (SIGABRT).&lt;br/&gt;
2019-06-01T14:26:04.594+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; *** unhandled exception 0x0000000E at 0x000007FEFD7FA49D, terminating&lt;br/&gt;
2019-06-01T14:26:04.594+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; *** stack trace for unhandled exception:&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; KERNELBASE.dll RaiseException+0x61x&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\util\signal_handlers_synchronous.cpp(239) mongo::`anonymous namespace&apos;::abruptQuit+0x157x&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ucrtbase.DLL raise+0x488x&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ucrtbase.DLL abort+0x49x&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\util\assert_util.cpp(148) mongo::fassertFailedWithLocation+0x385x&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp(361) mongo::`anonymous namespace&apos;::mdb_handle_error+0x332x&lt;br/&gt;
2019-06-01T14:26:04.629+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(277) __eventv+0x897x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(330) __wt_err+0x50x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\support\err.c(578) __wt_illegal_value_func+0x126x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_turtle.c(291) __wt_turtle_read+0x719x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(281) __wt_metadata_search+0x663x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(48) __conn_dhandle_config_set+0x34x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_dhandle.c(437) __wt_conn_dhandle_open+0x117x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(546) __wt_session_get_dhandle+0x278x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(538) __wt_session_get_dhandle+0x475x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_dhandle.c(351) __wt_session_get_btree_ckpt+0x196x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\cursor\cur_file.c(692) __wt_curfile_open+0x441x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(389) __session_open_cursor_int+0x759x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\session\session_api.c(444) __wt_open_cursor+0x27x&lt;br/&gt;
2019-06-01T14:26:04.630+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\meta\meta_table.c(92) __wt_metadata_cursor+0x153x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\third_party\wiredtiger\src\conn\conn_api.c(2676) wiredtiger_open+0x3050x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_kv_engine.cpp(409) mongo::WiredTigerKVEngine::WiredTigerKVEngine+0x2490x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\storage\wiredtiger\wiredtiger_init.cpp(91) mongo::`anonymous namespace&apos;::WiredTigerFactory::create+0x296x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\service_context_d.cpp(202) mongo::ServiceContextMongoD::initializeGlobalStorageEngine+0x1362x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\db.cpp(745) mongo::`anonymous namespace&apos;::_initAndListen+0x1716x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\db.cpp(1051) mongo::`anonymous namespace&apos;::initAndListen+0x39x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\db.cpp(1404) mongo::mongoDbMain+0x414x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe ...\src\mongo\db\dbmain.cpp(45) wmain+0x53x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; mongod.exe f:\dd\vctools\crt\vcstartup\src\startup\exe_common.inl(253) __scrt_common_main_seh+0x285x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; kernel32.dll BaseThreadInitThunk+0x13x&lt;br/&gt;
2019-06-01T14:26:04.631+0800 I - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; &lt;br/&gt;
2019-06-01T14:26:04.632+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; failed to open minidump file C:\Program Files\MongoDB\Server\3.2019-06-01T06-26-04.mdmp : &#25298;&#32477;&#35775;&#38382;&#12290;&lt;br/&gt;
2019-06-01T14:26:04.632+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; *** immediate exit due to unhandled exception&lt;/p&gt;


&lt;p&gt;&#160;I have uploaded the WiredTiger related files in attachment.&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="786788">SERVER-41449</key>
            <summary>WiredTiger error (-31804)</summary>
                <type id="1" iconUrl="https://jira.mongodb.org/secure/viewavatar?size=xsmall&amp;avatarId=14703&amp;avatarType=issuetype">Bug</type>
                                            <priority id="3" iconUrl="https://jira.mongodb.org/images/icons/priorities/major.svg">Major - P3</priority>
                        <status id="6" iconUrl="https://jira.mongodb.org/images/icons/statuses/closed.png" description="The issue is considered finished, the resolution is correct. Issues which are closed can be reopened.">Closed</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="9">Done</resolution>
                                        <assignee username="eric.sedor@mongodb.com">Eric Sedor</assignee>
                                    <reporter username="zzqxztc">Zhu Zi Qing</reporter>
                        <labels>
                            <label>wt-repair-success</label>
                            <label>wtc</label>
                    </labels>
                <created>Sat, 1 Jun 2019 09:51:33 +0000</created>
                <updated>Thu, 6 Jun 2019 19:14:16 +0000</updated>
                            <resolved>Thu, 6 Jun 2019 19:14:16 +0000</resolved>
                                    <version>3.6.3</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="2274587" author="eric.sedor" created="Thu, 6 Jun 2019 19:14:16 +0000"  >&lt;p&gt;Thanks &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=zzqxztc&quot; class=&quot;user-hover&quot; rel=&quot;zzqxztc&quot;&gt;zzqxztc&lt;/a&gt;; we&apos;re going to close this ticket but will keep this information on hand.&lt;/p&gt;</comment>
                            <comment id="2273497" author="zzqxztc" created="Thu, 6 Jun 2019 06:13:55 +0000"  >&lt;ol&gt;
	&lt;li&gt;A description of the underlying storage mechanism in use, including details like:
	&lt;ol&gt;
		&lt;li&gt;What file system and/or volume management system is in use? &lt;b&gt;windows 10, ntfs&lt;/b&gt;&lt;/li&gt;
		&lt;li&gt;Is data storage locally attached or network-attached? &lt;b&gt;locally&lt;/b&gt;&lt;/li&gt;
		&lt;li&gt;Are disks RAIDed and if so how? &lt;b&gt;No,only one disk&lt;/b&gt;&lt;/li&gt;
		&lt;li&gt;Are disks SSDs or HDDs? &lt;b&gt;HDDs&lt;/b&gt;&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
	&lt;li&gt;A description of your backup method, if any. &lt;b&gt;using MongoDB &quot;dump&quot; command&lt;/b&gt;&lt;/li&gt;
	&lt;li&gt;A description of your disks have been recently checked for integrity? &lt;b&gt;Normal, i think it has no &quot;bad track&quot;.&lt;/b&gt;&lt;/li&gt;
	&lt;li&gt;A history of the deployment, including:
	&lt;ol&gt;
		&lt;li&gt;a timeline of version changes &lt;b&gt;3.6.3-&amp;gt;4.0.1&lt;/b&gt;&lt;/li&gt;
		&lt;li&gt;a timeline of hardware upgrade/downgrade cycles or configuration changes ram &lt;b&gt;16GB-&amp;gt;32GB&lt;/b&gt;&lt;/li&gt;
		&lt;li&gt;a timeline of disaster recovery or backup restoration activities &lt;b&gt;my PC lost power suddenly.&lt;/b&gt;&#160;&lt;/li&gt;
		&lt;li&gt;a timeline of any manipulations of the underlying database files, including copies or moves, and information about whether mongod was running during each manipulation. &lt;b&gt;As above&#160;mentioned, i used &quot;dump&quot; command to produce backup files sometimes and only move or copy these files.&lt;/b&gt;&#160;&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
&lt;/ol&gt;
</comment>
                            <comment id="2272299" author="eric.sedor" created="Wed, 5 Jun 2019 14:34:44 +0000"  >&lt;p&gt;We know you are eager to get back to work but the following information may reveal the original cause of corruption and could be helpful to us in the future:&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;A description of the underlying storage mechanism in use, including details like:
	&lt;ol&gt;
		&lt;li&gt;What file system and/or volume management system is in use?&lt;/li&gt;
		&lt;li&gt;Is data storage locally attached or network-attached?&lt;/li&gt;
		&lt;li&gt;Are disks RAIDed and if so how?&lt;/li&gt;
		&lt;li&gt;Are disks SSDs or HDDs?&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
	&lt;li&gt;A description of your backup method, if any.&lt;/li&gt;
	&lt;li&gt;A description of your disks have been recently checked for integrity?&lt;/li&gt;
	&lt;li&gt;A history of the deployment, including:
	&lt;ol&gt;
		&lt;li&gt;a timeline of version changes&lt;/li&gt;
		&lt;li&gt;a timeline of hardware upgrade/downgrade cycles or configuration changes&lt;/li&gt;
		&lt;li&gt;a timeline of disaster recovery or backup restoration activities&lt;/li&gt;
		&lt;li&gt;a timeline of any manipulations of the underlying database files, including copies or moves, and information about whether mongod was running during each manipulation.&lt;/li&gt;
	&lt;/ol&gt;
	&lt;/li&gt;
&lt;/ol&gt;
</comment>
                            <comment id="2272291" author="eric.sedor" created="Wed, 5 Jun 2019 14:30:58 +0000"  >&lt;p&gt;We are glad to hear that, &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=zzqxztc&quot; class=&quot;user-hover&quot; rel=&quot;zzqxztc&quot;&gt;zzqxztc&lt;/a&gt;!&lt;/p&gt;</comment>
                            <comment id="2271968" author="zzqxztc" created="Wed, 5 Jun 2019 10:18:53 +0000"  >&lt;p&gt;Thanks for your reply @&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=eric.sedor&quot; class=&quot;user-hover&quot; rel=&quot;eric.sedor&quot;&gt;eric.sedor&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;I have put these&#160;wiredTiger.wt files in my&#160;&#160;$dbpath directory, and I try to run MongoDB again on my computer. However, I still get the error message as&lt;/p&gt;
&lt;blockquote&gt;&lt;p&gt;2019-06-04T11:05:21.232+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; MongoDB starting : pid=45596 port=27017 dbpath=Z:\study\data\data 64-bit host=zzq-LAB&lt;br/&gt;
2019-06-04T11:05:21.234+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; targetMinOS: Windows 7/Windows Server 2008 R2&lt;br/&gt;
2019-06-04T11:05:21.234+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; db version v3.6.3&lt;br/&gt;
2019-06-04T11:05:21.234+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; git version: 9586e557d54ef70f9ca4b43c26892cd55257e1a5&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; OpenSSL version: OpenSSL 1.0.1u-fips 22 Sep 2016&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; allocator: tcmalloc&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; modules: none&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; build environment:&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; distmod: 2008plus-ssl&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; distarch: x86_64&lt;br/&gt;
2019-06-04T11:05:21.235+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; target_arch: x86_64&lt;br/&gt;
2019-06-04T11:05:21.236+0800 I CONTROL &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; options: { config: &quot;D:\Softwares\MongoDB\Server\3.6\mongod.cfg&quot;, net: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { bindIp}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt;, processManagement: { windowsService: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { description}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; }, storage: { dbPath: &quot;Z:\study\data\data&quot;, directoryPerDB: true, wiredTiger: { engineConfig: &lt;/p&gt;
&lt;div class=&quot;error&quot;&gt;&lt;span class=&quot;error&quot;&gt;Unknown macro: { cacheSizeGB}&lt;/span&gt; &lt;/div&gt;
&lt;p&gt; } }, systemLog: { destination: &quot;file&quot;, logAppend: true, path: &quot;D:\Softwares\MongoDB\logs\mongo.log&quot; } }&lt;br/&gt;
2019-06-04T11:05:21.250+0800 W - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Detected unclean shutdown - Z:\study\data\data\mongod.lock is not empty.&lt;br/&gt;
2019-06-04T11:05:21.256+0800 I - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Detected data files in Z:\study\data\data created by the &apos;wiredTiger&apos; storage engine, so setting the active storage engine to &apos;wiredTiger&apos;.&lt;br/&gt;
2019-06-04T11:05:21.257+0800 W STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Recovering data from the last clean checkpoint.&lt;br/&gt;
2019-06-04T11:05:21.266+0800 I STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; wiredtiger_open config: create,cache_size=4096M,session_max=20000,eviction=(threads_min=4,threads_max=4),config_base=false,statistics=(fast),log=(enabled=true,archive=true,path=journal,compressor=snappy),file_manager=(close_idle_time=100000),statistics_log=(wait=0),verbose=(recovery_progress),&lt;br/&gt;
2019-06-04T11:05:29.743+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:743099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: read checksum error for 4096B block at offset 16150528: block header checksum of 1841193149 doesn&apos;t match expected checksum of 2489320858&lt;br/&gt;
2019-06-04T11:05:29.743+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:743099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: {16150528, 4096, 2489320858}: (chunk 1 of 4): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 de 00 00 00 b6 00 00 00 01 00 00 00 00 10 00 00 bd 60 be 6d 01 00 00 00 e2 f5 1a 80 e3 f6 4f c0 cf c0 e3 f6 9f c0 cf c0 e3 fa 6f c0 cf c0 e4 01 02 6f c0 cf c0 e4 01 07 3f c0 cf c0 e4 01 0d 3f c0 cf c0 e4 01 1a 5f c0 cf c0 e4 01 25 1f c0 cf c0 e4 01 29 af c0 cf c0 e4 01 31 1f c0 cf c0 e4 01 34 af c0 cf c0 e4 01 37 8f c0 cf c0 e4 01 3d ff c0 cf c0 e4 01 41 4f c0 cf c0 e4 01 43 bf c0 cf c0 e4 01 48 4f c0 cf c0 e4 01 4a 6f c0 cf c0 e4 01 4c 2f c0 cf c0 e4 01 4c 8f c0 cf c0 e4 01 50 af c0 cf c0 e3 17 3f c0 cf c0 e3 17 7f c0 cf c0 e3 17 ef c0 cf c0 e3 40 6f c0 cf c0 e4 01 50 8f c0 df c0 e4 01 50 ef c0 e2 0f c0 80 80 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 &lt;br/&gt;
2019-06-04T11:05:29.743+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:743099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: {16150528, 4096, 2489320858}: (chunk 2 of 4): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 &lt;br/&gt;
2019-06-04T11:05:29.744+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:744099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: {16150528, 4096, 2489320858}: (chunk 3 of 4): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 &lt;br/&gt;
2019-06-04T11:05:29.744+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:744099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: {16150528, 4096, 2489320858}: (chunk 4 of 4): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 &lt;br/&gt;
2019-06-04T11:05:29.744+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:744099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: instagram_Media_comments/collection-7768-4208642328751036629.wt: encountered an illegal file format or internal value: (__wt_block_read_off, 302)&lt;br/&gt;
2019-06-04T11:05:29.744+0800 E STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger error (-31804) &lt;span class=&quot;error&quot;&gt;&amp;#91;1559617529:744099&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;45596:140703474012768&amp;#93;&lt;/span&gt;, &lt;a href=&quot;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;file:instagram_Media_comments/collection-7768-4208642328751036629.wt&lt;/a&gt;, WT_SESSION.open_cursor: the process must exit and restart: WT_PANIC: WiredTiger library panic&lt;br/&gt;
2019-06-04T11:05:29.744+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Fatal Assertion 28558 at src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp 361&lt;br/&gt;
2019-06-04T11:05:29.744+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt;&lt;/p&gt;

&lt;p&gt;***aborting after fassert() failure&lt;/p&gt;


&lt;p&gt;2019-06-04T11:05:29.754+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;WTJournalFlusher&amp;#93;&lt;/span&gt; Fatal Assertion 28559 at src\mongo\db\storage\wiredtiger\wiredtiger_util.cpp 64&lt;br/&gt;
2019-06-04T11:05:29.754+0800 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;WTJournalFlusher&amp;#93;&lt;/span&gt;&lt;/p&gt;

&lt;p&gt;***aborting after fassert() failure&lt;/p&gt;&lt;/blockquote&gt;
&lt;p&gt;I have tried to use the command &quot;mongo -repair&quot; to fix my MongoDB(version=3.6.3 ), But the mongoDB can not complete repair process.&lt;/p&gt;

&lt;p&gt;You&#160; mention that &quot;MongoDB 4.0 offers improved repair capabilities&quot;. I use &quot;repair&quot; command again to fix MongoDB(version=4.0.1). It works!&lt;/p&gt;

&lt;p&gt;MongoDB successfully starts fix itself automatically.&#160; Though&#160; i consider some data may lost due to db engine corruption.&#160; My most data are recovery. Thanks for your technical work.&lt;/p&gt;</comment>
                            <comment id="2269716" author="eric.sedor" created="Mon, 3 Jun 2019 21:56:57 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=zzqxztc&quot; class=&quot;user-hover&quot; rel=&quot;zzqxztc&quot;&gt;zzqxztc&lt;/a&gt;, this error message leads us to suspect corruption in the wiredTiger.wt file. Please make a complete copy of the database&apos;s $dbpath directory to work off of and safeguard the current $dbpath.&lt;/p&gt;

&lt;p&gt;The ideal resolution is to perform a clean &lt;a href=&quot;https://docs.mongodb.org/manual/tutorial/resync-replica-set-member/#automatically-sync-a-member&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;resync&lt;/a&gt; from an unaffected node.&lt;/p&gt;

&lt;p&gt;However, I&apos;ve attached a repair attempt of the files you provided as &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/218840/218840_SERVER-41449_repair_attempt.tgz&quot; title=&quot;SERVER-41449_repair_attempt.tgz attached to SERVER-41449&quot;&gt;SERVER-41449_repair_attempt.tgz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;. Please extract these files, replace them in your &lt;tt&gt;$dbpath&lt;/tt&gt;, and let us know if it resolves the issue.&lt;/p&gt;

&lt;p&gt;Please keep in mind that this repair effort may not be successful, and that diagnosing corruption issues requires significant information and effort.&lt;/p&gt;

&lt;p&gt;To avoid a problem like in the future, it is our strong recommendation to:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Use a &lt;a href=&quot;https://docs.mongodb.com/manual/replication/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;replica set&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Use the &lt;a href=&quot;https://docs.mongodb.com/manual/release-notes/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;most recent version&lt;/a&gt;. MongoDB 4.0 offers improved repair capabilities.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Keep up to date &lt;a href=&quot;https://docs.mongodb.com/manual/core/backups/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;backups of your databases&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Have a process in place to restore backups.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Follow all &lt;a href=&quot;https://docs.mongodb.com/manual/administration/production-notes/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;production notes&lt;/a&gt;, especially those for &lt;a href=&quot;https://docs.mongodb.com/manual/administration/production-notes/#disk-and-storage-systems&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;underlying storage systems&lt;/a&gt;.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Schedule and perform regular checks of the integrity of your filesystems and disks.&lt;/li&gt;
&lt;/ul&gt;


&lt;ul&gt;
	&lt;li&gt;Never manipulate the underlying database files in any way.&lt;/li&gt;
&lt;/ul&gt;
</comment>
                    </comments>
                    <attachments>
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