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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-54130] WiredTiger Library panic error.(WT_panic) and WT_NOTFOUND</title>
                <link>https://jira.mongodb.org/browse/SERVER-54130</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hi Team,&lt;/p&gt;

&lt;p&gt;Actually thing is that we are working on the restoration of data.&lt;br/&gt;
As a workaround, we follow the VM snapshot (i.e Windows) as a backup mechanism. We have taken the old tape backup and restore it on the new VM.&lt;br/&gt;
But, when we trying to start the mongod service on it we fail to start it.&lt;br/&gt;
We tried to start mongod with --dbpath and --logpath option with including the db&#160;data folder.&lt;br/&gt;
But we are getting an error of WT_PANIC : WiredTigar library panic.&lt;/p&gt;

&lt;p&gt;And, wiredTigar.turtle: fatal turtle file read error.&lt;/p&gt;

&lt;p&gt;Also if we would us to understand why this error nd which case it occurs.&lt;/p&gt;

&lt;p&gt;That will be really helpful.&lt;br/&gt;
Necessary screenshot attached for reference.&lt;br/&gt;
Kindly help us!! struggling lot!!&lt;br/&gt;
Thanks in advance.&lt;/p&gt;</description>
                <environment></environment>
        <key id="1604759">SERVER-54130</key>
            <summary>WiredTiger Library panic error.(WT_panic) and WT_NOTFOUND</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="13204">Community Answered</resolution>
                                        <assignee username="dmitry.agranat@mongodb.com">Dmitry Agranat</assignee>
                                    <reporter username="n.kamble@pokermagnet.com">Nagesh Dnyandeo Kamble</reporter>
                        <labels>
                    </labels>
                <created>Fri, 29 Jan 2021 13:10:33 +0000</created>
                <updated>Fri, 27 Oct 2023 15:56:29 +0000</updated>
                            <resolved>Sun, 21 Feb 2021 11:07:53 +0000</resolved>
                                    <version>4.0.6</version>
                                                    <component>Diagnostics</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="3626657" author="dmitry.agranat" created="Sun, 21 Feb 2021 11:07:41 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=n.kamble%40pokermagnet.com&quot; class=&quot;user-hover&quot; rel=&quot;n.kamble@pokermagnet.com&quot;&gt;n.kamble@pokermagnet.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;We haven&#8217;t heard back from you for some time, so I&#8217;m going to close this ticket. &lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Dima&lt;/p&gt;</comment>
                            <comment id="3608529" author="dmitry.agranat" created="Wed, 10 Feb 2021 08:31:06 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=n.kamble%40pokermagnet.com&quot; class=&quot;user-hover&quot; rel=&quot;n.kamble@pokermagnet.com&quot;&gt;n.kamble@pokermagnet.com&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;The error message leads us to suspect some form of physical corruption. It will be difficult to determine what exactly has happened w/o collecting more evidence such as &lt;tt&gt;mongod&lt;/tt&gt;, &lt;tt&gt;syslog&lt;/tt&gt;, &lt;tt&gt;dmesg&lt;/tt&gt; logs and different &lt;tt&gt;wiredtiger&lt;/tt&gt; files as well as inspecting and validating your backup process. &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;To avoid a problem like this in the future, it is our strong recommendation to:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;Use a &lt;a href=&quot;https://docs.mongodb.com/manual/replication/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;replica set&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Use the &lt;a href=&quot;https://docs.mongodb.com/manual/release-notes/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;most recent version&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Keep up to date &lt;a href=&quot;https://docs.mongodb.com/manual/core/backups/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;backups of your databases&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Have a process in place to restore backups.&lt;/li&gt;
	&lt;li&gt;Follow all &lt;a href=&quot;https://docs.mongodb.com/manual/administration/production-notes/&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;production notes&lt;/a&gt;, especially those for &lt;a href=&quot;https://docs.mongodb.com/manual/administration/production-notes/#disk-and-storage-systems&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;underlying storage systems&lt;/a&gt;.&lt;/li&gt;
	&lt;li&gt;Schedule and perform regular checks of the integrity of your filesystems and disks.&lt;/li&gt;
	&lt;li&gt;Never manipulate the underlying database files in any way.&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;Thanks,&lt;br/&gt;
Dima&lt;/p&gt;</comment>
                    </comments>
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