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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-30271] file:WiredTiger.wt, WT_CURSOR.next: read checksum error</title>
                <link>https://jira.mongodb.org/browse/SERVER-30271</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;After power failure, 2 MongoDB Servers just won&apos;t start again.&lt;br/&gt;
With one I get: :&lt;/p&gt;

&lt;p&gt;WiredTiger error (0) &lt;span class=&quot;error&quot;&gt;&amp;#91;1500732904:16506&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;17102:0x7fc3ddb5bdc0&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 12288B block at offset 2478080: block header checksum of 405166289 doesn&apos;t match expected checksum of 439830749&lt;br/&gt;
2017-07-22T22:15:04.016+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;1500732904:16579&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;17102:0x7fc3ddb5bdc0&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;
2017-07-22T22:15:04.016+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;1500732904:16597&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;17102:0x7fc3ddb5bdc0&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;
2017-07-22T22:15:04.016+0800 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 361&lt;/p&gt;


&lt;p&gt;Would you be willing to try repairing our .wt files for both our servers separated by 2 set of files that i&apos;ve attached&lt;br/&gt;
Thanks&lt;/p&gt;</description>
                <environment></environment>
        <key id="407165">SERVER-30271</key>
            <summary>file:WiredTiger.wt, WT_CURSOR.next: 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="kelsey.schubert@mongodb.com">Kelsey Schubert</assignee>
                                    <reporter username="zhaow7">zhaow</reporter>
                        <labels>
                            <label>envh</label>
                            <label>rpo</label>
                            <label>rps</label>
                            <label>trcf</label>
                            <label>wtc</label>
                    </labels>
                <created>Sat, 22 Jul 2017 15:45:17 +0000</created>
                <updated>Fri, 27 Jul 2018 18:04:59 +0000</updated>
                            <resolved>Tue, 8 Aug 2017 18:42:57 +0000</resolved>
                                    <version>3.4.3</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1643347" author="thomas.schubert" created="Tue, 8 Aug 2017 18:36:10 +0000"  >&lt;p&gt;Thanks for the additional information, from your responses this issue appears to be the result of a disk corruption outside of MongoDB following the power failure.&lt;/p&gt;</comment>
                            <comment id="1631817" author="zhaow7" created="Wed, 26 Jul 2017 01:20:46 +0000"  >&lt;p&gt;Oh,ye,it worked.&lt;br/&gt;
Just have some error for the collection.but I think I can resolve it.&lt;/p&gt;

&lt;p&gt;Answer:&lt;br/&gt;
1.use xfs filesystem.&lt;br/&gt;
2.storage devices is locallly.&lt;br/&gt;
3.use HDDS&lt;br/&gt;
4.use raid 0&lt;br/&gt;
5.The filesystem check fail,say to replay the log.&lt;br/&gt;
But when I mount the device.It says the structure needs cleaning .&lt;br/&gt;
So i have no idea,then use the xfs_repair with -L.&lt;/p&gt;</comment>
                            <comment id="1630640" author="thomas.schubert" created="Mon, 24 Jul 2017 22:10:43 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=zhaow7&quot; class=&quot;user-hover&quot; rel=&quot;zhaow7&quot;&gt;zhaow7&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the report. I only see one set of files, and I&apos;ve attached a repair attempt of them. Would you please extract these files and replace them in your &lt;tt&gt;$dbpath&lt;/tt&gt; and let us know if it resolves the issue? If you are still seeing errors after replacing these files, please provide the complete logs from mongod so that we can further investigate. &lt;/p&gt;

&lt;p&gt;Additionally, would you please answer the following questions:&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;Was the underlying filesystem checked after the power failure and is it currently marked clean?&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Thank you,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="161528" name="WiredTiger.zip" size="960293" author="zhaow7" created="Sat, 22 Jul 2017 15:46:49 +0000"/>
                            <attachment id="161592" name="repair_attempt.tar.gz" size="946320" author="kelsey.schubert@mongodb.com" created="Mon, 24 Jul 2017 22:09:12 +0000"/>
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