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    <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>
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<item>
            <title>[SERVER-60821] How to recover from read checksum error</title>
                <link>https://jira.mongodb.org/browse/SERVER-60821</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;How I can recover my db from this error:&lt;/p&gt;

&lt;p&gt;2021-10-19T19:28:00.268+0200 I STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ** WARNING: Using the XFS filesystem is strongly recommended with the WiredTiger storage engine&lt;br/&gt;
2021-10-19T19:28:00.268+0200 I STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; ** See &lt;a href=&quot;http://dochub.mongodb.org/core/prodnotes-filesystem&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;http://dochub.mongodb.org/core/prodnotes-filesystem&lt;/a&gt;&lt;br/&gt;
2021-10-19T19:28:00.268+0200 I STORAGE &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; wiredtiger_open config: create,cache_size=7412M,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),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),verbose=(recovery_progress),&lt;br/&gt;
2021-10-19T19:28:04.875+0200 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;1634664484:875538&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;11247:0x7f03a47abe80&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;, WT_CURSOR.next: read checksum error for 28672B block at offset 1908736: block header checksum of 1885693284 doesn&apos;t match expected checksum of 2855298891&lt;br/&gt;
2021-10-19T19:28:04.875+0200 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;1634664484:875611&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;11247:0x7f03a47abe80&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;, WT_CURSOR.next: WiredTiger.wt: encountered an illegal file format or internal value&lt;br/&gt;
2021-10-19T19:28:04.875+0200 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;1634664484:875620&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;11247:0x7f03a47abe80&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;, WT_CURSOR.next: the process must exit and restart: WT_PANIC: WiredTiger library panic&lt;br/&gt;
2021-10-19T19:28:04.875+0200 I - &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 365&lt;br/&gt;
2021-10-19T19:28:04.875+0200 I - &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;2021-10-19T19:28:04.900+0200 F - &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Got signal: 6 (Aborted).&lt;/p&gt;

&lt;p&gt;&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="1902406">SERVER-60821</key>
            <summary>How to recover from read checksum error</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="edwin.zhou@mongodb.com">Edwin Zhou</assignee>
                                    <reporter username="dario.desimone@gmail.com">Dario De Simon</reporter>
                        <labels>
                    </labels>
                <created>Tue, 19 Oct 2021 17:58:02 +0000</created>
                <updated>Mon, 22 Nov 2021 20:06:25 +0000</updated>
                            <resolved>Mon, 22 Nov 2021 20:06:25 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>2</watches>
                                                                                                                <comments>
                            <comment id="4205819" author="JIRAUSER1257066" created="Mon, 22 Nov 2021 20:06:25 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=dario.desimone%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;dario.desimone@gmail.com&quot;&gt;dario.desimone@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for following up. We&apos;re happy to hear that you&apos;ve been able to solve this issue with &lt;tt&gt;&amp;#45;&amp;#45;repair&lt;/tt&gt;.&lt;/p&gt;

&lt;p&gt;Best,&lt;br/&gt;
Edwin&lt;/p&gt;</comment>
                            <comment id="4203641" author="JIRAUSER1262959" created="Sun, 21 Nov 2021 21:55:13 +0000"  >&lt;p&gt;Hello Edwin,&lt;/p&gt;

&lt;p&gt;yes, I&apos;ve tryed with --repair.&lt;/p&gt;

&lt;p&gt;The problem was an error on the storage where are installed the Virtual Machine.&lt;/p&gt;

&lt;p&gt;Repaired it, I&apos;ve rescued all data from disk.&lt;/p&gt;

&lt;p&gt;Thanks for interesting.&lt;/p&gt;

&lt;p&gt;Best Regards&lt;/p&gt;</comment>
                            <comment id="4198465" author="JIRAUSER1257066" created="Thu, 18 Nov 2021 17:40:03 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=dario.desimone%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;dario.desimone@gmail.com&quot;&gt;dario.desimone@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We still need additional information to diagnose the problem. If this is still an issue for you, would you please note what version of MongoDB you&apos;re using? Are you encountering this issue on a replica set or on a standalone? Have you found success with using &lt;tt&gt;mongod &amp;#45;&amp;#45;repair&lt;/tt&gt; using the latest version of MongoDB?&lt;/p&gt;

&lt;p&gt;Best,&lt;br/&gt;
Edwin&lt;/p&gt;</comment>
                            <comment id="4167391" author="JIRAUSER1257066" created="Wed, 3 Nov 2021 16:58:41 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=dario.desimone%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;dario.desimone@gmail.com&quot;&gt;dario.desimone@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;This error message leads us to suspect some form of corruption. Can you please note what version of MongoDB you&apos;re using? Are you encountering this issue on a replica set or on a standalone?&lt;/p&gt;

&lt;p&gt;Please make a complete copy of the database&apos;s $dbpath directory to safeguard so that you can work off of 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;You can also try &lt;a href=&quot;https://docs.mongodb.com/manual/reference/program/mongod/#cmdoption-mongod-repair&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;&lt;tt&gt;mongod --repair&lt;/tt&gt;&lt;/a&gt; using the latest version of MongoDB.&lt;/p&gt;

&lt;p&gt;In the event that a &lt;tt&gt;--repair&lt;/tt&gt; operation is unsuccessful, then please also provide:&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;The logs leading up to the first occurrence of any issue&lt;/li&gt;
	&lt;li&gt;The logs of the repair operation.&lt;/li&gt;
	&lt;li&gt;The logs of any attempt to start mongod after the repair operation completed.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Best,&lt;br/&gt;
Edwin&lt;/p&gt;</comment>
                    </comments>
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                            <attachment id="341163" name="WiredTiger" size="49" author="dario.desimone@gmail.com" created="Tue, 19 Oct 2021 17:59:11 +0000"/>
                            <attachment id="341162" name="WiredTiger.turtle" size="1020" author="dario.desimone@gmail.com" created="Tue, 19 Oct 2021 17:59:11 +0000"/>
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                            <attachment id="341160" name="WiredTigerLAS.wt" size="4096" author="dario.desimone@gmail.com" created="Tue, 19 Oct 2021 17:59:11 +0000"/>
                            <attachment id="341159" name="_mdb_catalog.wt" size="94208" author="dario.desimone@gmail.com" created="Tue, 19 Oct 2021 17:59:12 +0000"/>
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