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    <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-81835] potential hardware corruption, read checksum error: block header checksum doesn&apos;t match the expected checksum.</title>
                <link>https://jira.mongodb.org/browse/SERVER-81835</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;A total of 12 servers are configured as a ReplicaSet to operate a Shard Cluster, with each server having three nodes grouped together.&lt;/p&gt;

&lt;p&gt;Over the past month, approximately five secondary nodes have encountered issues with the message &quot;potential hardware corruption, read checksum error: block header checksum doesn&apos;t match the expected checksum.&quot; Attempts to resolve the problem using the repair command have been unsuccessful, and the issue has persisted. Ultimately, the only effective solution was to delete the data and perform a resynchronization.&lt;/p&gt;

&lt;ul class=&quot;alternate&quot; type=&quot;square&quot;&gt;
	&lt;li&gt;Repair : &#160;&lt;a href=&quot;https://www.mongodb.com/docs/manual/reference/program/mongod/#std-option-mongod.--repair&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Link&lt;/a&gt;&lt;/li&gt;
	&lt;li&gt;Delete Date and Resync : &lt;a href=&quot;https://www.mongodb.com/docs/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;Link&lt;/a&gt;&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;However, deleting the data and resyncing is not a practical solution due to the large data capacity of around 25TB. Determining the root cause of this issue has proven to be challenging.&lt;/p&gt;

&lt;p&gt;How can I resolve this issue?&lt;/p&gt;</description>
                <environment>CentOS 7.9</environment>
        <key id="2458527">SERVER-81835</key>
            <summary>potential hardware corruption, read checksum error: block header checksum doesn&apos;t match the expected checksum.</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="noopur.gupta@mongodb.com">Noopur Gupta</assignee>
                                    <reporter username="leeminseob@gmail.com">&#48708; &#49436;</reporter>
                        <labels>
                    </labels>
                <created>Wed, 4 Oct 2023 04:29:41 +0000</created>
                <updated>Tue, 7 Nov 2023 17:14:41 +0000</updated>
                            <resolved>Tue, 7 Nov 2023 17:14:41 +0000</resolved>
                                    <version>6.0.3</version>
                    <version>6.0.9</version>
                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="5861203" author="JIRAUSER1275035" created="Tue, 7 Nov 2023 17:14:26 +0000"  >&lt;p&gt;Closing this ticket since there is no activity. Feel free to open the ticket if the issue still persists.&lt;/p&gt;</comment>
                            <comment id="5831410" author="JIRAUSER1275035" created="Mon, 30 Oct 2023 15:14:54 +0000"  >&lt;p&gt;We still need additional information to diagnose the problem. If this is still an issue for you, would you please provide the above logs after following the steps for sync ?&lt;/p&gt;</comment>
                            <comment id="5765672" author="JIRAUSER1275035" created="Mon, 9 Oct 2023 20:27:53 +0000"  >&lt;p&gt;Hi,&lt;/p&gt;

&lt;p&gt;This error message leads us to suspect some form of physical corruption. 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;Since, this is a replica set, 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 &lt;b&gt;latest&lt;/b&gt; version of MongoDB.&lt;/p&gt;

&lt;p&gt;If the issue with {{--repair }}still persists after the above steps are performed, &#160;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;li&gt;The command issued to repair the nodes&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;&#160;&lt;/p&gt;

&lt;p&gt;Thanks&lt;/p&gt;

&lt;p&gt;Noopur&lt;/p&gt;</comment>
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