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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>
    </build-info>


<item>
            <title>[SERVER-43650] WiredTiger.wt: read checksum error for 28672B block at offset 2613248: block header checksum of 3584980580 doesn&apos;t match expected checksum of 1212880709</title>
                <link>https://jira.mongodb.org/browse/SERVER-43650</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;I had a problem when restart mongodb 3.6, pls help me. I had no any backup for them&#160;&lt;/p&gt;</description>
                <environment></environment>
        <key id="941026">SERVER-43650</key>
            <summary>WiredTiger.wt: read checksum error for 28672B block at offset 2613248: block header checksum of 3584980580 doesn&apos;t match expected checksum of 1212880709</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="carl.champain@mongodb.com">Carl Champain</assignee>
                                    <reporter username="tranthoang.vn@gmail.com">TRAN THOANG</reporter>
                        <labels>
                            <label>wt-repair-success</label>
                    </labels>
                <created>Thu, 26 Sep 2019 09:00:36 +0000</created>
                <updated>Thu, 10 Oct 2019 17:35:11 +0000</updated>
                            <resolved>Thu, 10 Oct 2019 17:00:51 +0000</resolved>
                                                                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="2475505" author="carl.champain" created="Thu, 10 Oct 2019 13:27:38 +0000"  >&lt;p&gt;Thanks for getting back to me. I&apos;m sorry you lost some data but glad the &lt;tt&gt;--repair&lt;/tt&gt; worked!&lt;br/&gt;
 I&apos;m going to close this ticket as it is now resolved.&lt;/p&gt;</comment>
                            <comment id="2475174" author="tranthoang.vn@gmail.com" created="Thu, 10 Oct 2019 06:40:51 +0000"  >&lt;p&gt;Thanks for support,&#160;&lt;/p&gt;

&lt;p&gt;I had use binary version&#160;4.0.12 to repair files. Result, Our data files had repaired but partial data has been lost.&#160;But the results were good, �our service was working again.&lt;/p&gt;

&lt;p&gt;Thanks so much.&lt;/p&gt;</comment>
                            <comment id="2473688" author="carl.champain" created="Wed, 9 Oct 2019 14:01:53 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tranthoang.vn%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;tranthoang.vn@gmail.com&quot;&gt;tranthoang.vn@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Any updates on this issue?&lt;/p&gt;</comment>
                            <comment id="2434668" author="carl.champain" created="Thu, 26 Sep 2019 15:29:20 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=tranthoang.vn%40gmail.com&quot; class=&quot;user-hover&quot; rel=&quot;tranthoang.vn@gmail.com&quot;&gt;tranthoang.vn@gmail.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for the report.&lt;/p&gt;

&lt;p&gt;Unfortunately, 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 work off of and safeguard the current $dbpath.&lt;br/&gt;
 Our ability to determine the source of this corruption depends greatly on your ability to provide:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;The logs for the affected node, including before, leading up to, and after the first sign of corruption.&lt;/li&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;


&lt;p&gt;I see this node wasn&apos;t started as a replica set; therefore, the ideal resolution 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 will not work in your case.&lt;br/&gt;
Could you please download the&#160;&lt;a href=&quot;https://www.mongodb.com/download-center/community&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;4.0.12 MongoDB binaries&lt;/a&gt;, use the 4.0.12 binary to run&#160;&lt;tt&gt;--repair&lt;/tt&gt;&#160;against your data files, and then start the&#160;&lt;tt&gt;mongod&lt;/tt&gt;&#160;using your original binaries?&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
 Carl&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="231814" name="WiredTiger.turtle" size="1136" author="tranthoang.vn@gmail.com" created="Thu, 26 Sep 2019 09:00:58 +0000"/>
                            <attachment id="231815" name="WiredTiger.wt" size="28254208" author="tranthoang.vn@gmail.com" created="Thu, 26 Sep 2019 09:01:11 +0000"/>
                            <attachment id="231813" name="error.log" size="108886" author="tranthoang.vn@gmail.com" created="Thu, 26 Sep 2019 09:00:59 +0000"/>
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