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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-26855] block header checksum of 2754197295 doesn&apos;t match expected checksum of 275815989</title>
                <link>https://jira.mongodb.org/browse/SERVER-26855</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;The server shutdown unclean.When I restart ,It can&apos;t normal boot.&lt;br/&gt;
mongod version : 3.2.10&lt;br/&gt;
The log in attached file.&lt;/p&gt;</description>
                <environment></environment>
        <key id="328294">SERVER-26855</key>
            <summary>block header checksum of 2754197295 doesn&apos;t match expected checksum of 275815989</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="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="alan321">alan lee</reporter>
                        <labels>
                            <label>envns</label>
                            <label>rge</label>
                            <label>rps</label>
                            <label>trcf</label>
                            <label>wtc</label>
                    </labels>
                <created>Tue, 1 Nov 2016 10:35:30 +0000</created>
                <updated>Mon, 13 Aug 2018 21:47:16 +0000</updated>
                            <resolved>Thu, 17 Nov 2016 05:27:27 +0000</resolved>
                                    <version>3.2.10</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="1890867" author="thomas.schubert" created="Mon, 14 May 2018 18:55:37 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rjv94rnjn&quot; class=&quot;user-hover&quot; rel=&quot;rjv94rnjn&quot;&gt;rjv94rnjn&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;So we can track this issue, would you please open a new SERVER ticket including the logs from the failed start up attempt?&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Kelsey&lt;/p&gt;</comment>
                            <comment id="1890034" author="rjv94rnjn" created="Sun, 13 May 2018 17:56:19 +0000"  >&lt;p&gt;Hi &lt;br/&gt;
I am also getting this error.Tried for repair option but failed .attaching file for reference. pl help.&lt;/p&gt;</comment>
                            <comment id="1436272" author="thomas.schubert" created="Thu, 17 Nov 2016 05:27:28 +0000"  >&lt;p&gt;Glad to hear it.&lt;/p&gt;</comment>
                            <comment id="1436201" author="alan321" created="Thu, 17 Nov 2016 02:32:24 +0000"  >&lt;p&gt;@Thomas Schubert  Thank you.&lt;br/&gt;
It worked for me.&lt;br/&gt;
Thank you again. &lt;/p&gt;</comment>
                            <comment id="1433548" author="thomas.schubert" created="Mon, 14 Nov 2016 18:51:02 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=alan321&quot; class=&quot;user-hover&quot; rel=&quot;alan321&quot;&gt;alan321&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Sorry for the delay getting back to you. I&apos;ve attached the repair attempt on the files you provided. Please extract the files and replace them in your $dbpath. If there is no other corruption the mongod should restart successfully. &lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1423582" author="alan321" created="Wed, 2 Nov 2016 00:40:36 +0000"  >&lt;p&gt;The file is WiredTiger.wt file.&lt;/p&gt;</comment>
                            <comment id="1423581" author="alan321" created="Wed, 2 Nov 2016 00:39:10 +0000"  >&lt;p&gt;First,thank you for your answer.&lt;br/&gt;
My mongodb server is standalone.It use wriedTiger engine.&lt;br/&gt;
Storage devices are attached locally. The disks is HDDs.But we don&apos;t use RAID.&lt;br/&gt;
The cause of the unclean shutdown is outage.&lt;br/&gt;
Other system errors logged around the unclean shutdown,which you mean mongodb.log? &lt;/p&gt;</comment>
                            <comment id="1422715" author="thomas.schubert" created="Tue, 1 Nov 2016 11:30:53 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=alan321&quot; class=&quot;user-hover&quot; rel=&quot;alan321&quot;&gt;alan321&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Would you please answer the following questions to get a better understanding of what happened here:&lt;/p&gt;
&lt;ol&gt;
	&lt;li&gt;What kind of underlying storage mechanism are you using? Are the storage devices attached locally or over the network? Are the disks SSDs or HDDs? What kind of RAID and/or volume management system are you using?&lt;/li&gt;
	&lt;li&gt;Are you aware of the cause of the unclean shutdown?&lt;/li&gt;
	&lt;li&gt;Would you please provide the logs preceding the unclean shutdown?&lt;/li&gt;
	&lt;li&gt;Were any other system errors logged around the unclean shutdown?&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Finally, would you please attach the affected &lt;tt&gt;WiredTiger.wt&lt;/tt&gt; file, so we can attempt to repair the corruption?&lt;/p&gt;

&lt;p&gt;Thank you,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="186671" name="WiredTiger" size="46" author="rjv94rnjn" created="Sun, 13 May 2018 17:54:16 +0000"/>
                            <attachment id="186672" name="WiredTiger.lock" size="21" author="rjv94rnjn" created="Sun, 13 May 2018 17:54:16 +0000"/>
                            <attachment id="186673" name="WiredTiger.turtle" size="988" author="rjv94rnjn" created="Sun, 13 May 2018 17:54:16 +0000"/>
                            <attachment id="143009" name="WiredTiger.turtle" size="945" author="alan321" created="Tue, 1 Nov 2016 10:35:30 +0000"/>
                            <attachment id="186674" name="WiredTiger.wt" size="212992" author="rjv94rnjn" created="Sun, 13 May 2018 17:54:17 +0000"/>
                            <attachment id="143118" name="WiredTiger.wt" size="200704" author="alan321" created="Wed, 2 Nov 2016 00:40:36 +0000"/>
                            <attachment id="186670" name="mongod.lock" size="6" author="rjv94rnjn" created="Sun, 13 May 2018 17:54:16 +0000"/>
                            <attachment id="143008" name="mongodb.log" size="7547" author="alan321" created="Tue, 1 Nov 2016 10:35:30 +0000"/>
                            <attachment id="144142" name="repair_attempt.tar.gz" size="10922" author="kelsey.schubert@mongodb.com" created="Mon, 14 Nov 2016 18:48:06 +0000"/>
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