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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-22816] Corrupt metadata after unexpected shutdown -&gt; unable to start or repair </title>
                <link>https://jira.mongodb.org/browse/SERVER-22816</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Using mongodb 3.0.1 with wiredTiger&lt;br/&gt;
Following an unexpected shutdown database is unable to start or even repair. Console output indicates wiredTiger is unable to open its metadata files. They are likely to have been corrupted during the server crash. Is there any way to repair them? &lt;/p&gt;</description>
                <environment></environment>
        <key id="267468">SERVER-22816</key>
            <summary>Corrupt metadata after unexpected shutdown -&gt; unable to start or repair </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="3">Duplicate</resolution>
                                        <assignee username="-1">Unassigned</assignee>
                                    <reporter username="a.dobre">Alexandru Dobre</reporter>
                        <labels>
                    </labels>
                <created>Tue, 23 Feb 2016 16:07:45 +0000</created>
                <updated>Thu, 10 Mar 2016 20:29:38 +0000</updated>
                            <resolved>Thu, 10 Mar 2016 20:29:29 +0000</resolved>
                                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>7</watches>
                                                                                                                <comments>
                            <comment id="1199599" author="thomas.schubert" created="Thu, 10 Mar 2016 20:29:03 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=a.dobre&quot; class=&quot;user-hover&quot; rel=&quot;a.dobre&quot;&gt;a.dobre&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Unfortunately, repairDatabase cannot continue when it hits an empty collection file. There is an improvement planned, &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19815&quot; title=&quot;Improved mongod --repair option for WiredTiger&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-19815&quot;&gt;&lt;del&gt;SERVER-19815&lt;/del&gt;&lt;/a&gt;, which would make repairDatabase more robust when executed against WiredTiger data files. Please feel free to watch &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-19815&quot; title=&quot;Improved mongod --repair option for WiredTiger&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-19815&quot;&gt;&lt;del&gt;SERVER-19815&lt;/del&gt;&lt;/a&gt; for updates and vote for it as well.&lt;/p&gt;

&lt;p&gt;If you are able, I would recommend resyncing from an unaffected node or restoring from a backup.&lt;/p&gt;

&lt;p&gt;For MongoDB-related support discussion please post on the &lt;a href=&quot;http://groups.google.com/group/mongodb-user&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;mongodb-users group&lt;/a&gt; or &lt;a href=&quot;http://stackoverflow.com/questions/tagged/mongodb&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;Stack Overflow with the &lt;tt&gt;mongodb&lt;/tt&gt; tag&lt;/a&gt;. A question like this involving more discussion would be best posted on the mongodb-users group.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1182030" author="a.dobre" created="Tue, 23 Feb 2016 17:07:33 +0000"  >&lt;p&gt;Hello and thank you for the file fixes. &lt;br/&gt;
I was able to start the repair process using the fixed files but it failed when reaching the following file &quot;collection-145-2725977566440307375.wt&quot; which is probably corrupt as well (cannot upload since file is empty). Is there any way to just skip recovery of this file and continue with the repair process?&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Alexandru&lt;/p&gt;</comment>
                            <comment id="1182000" author="ramon.fernandez" created="Tue, 23 Feb 2016 16:52:07 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=a.dobre&quot; class=&quot;user-hover&quot; rel=&quot;a.dobre&quot;&gt;a.dobre&lt;/a&gt;, can you please extract the &lt;tt&gt;repair_attempt.tgz&lt;/tt&gt; files in your &lt;tt&gt;dbpath&lt;/tt&gt; and start &lt;tt&gt;mongod&lt;/tt&gt; again?&lt;/p&gt;

&lt;p&gt;Thanks,&lt;br/&gt;
Ram&#243;n.&lt;/p&gt;</comment>
                            <comment id="1181981" author="ramon.fernandez" created="Tue, 23 Feb 2016 16:42:18 +0000"  >&lt;p&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=a.dobre&quot; class=&quot;user-hover&quot; rel=&quot;a.dobre&quot;&gt;a.dobre&lt;/a&gt;, there are some known issues with early 3.0 releases where unclean shutdowns may leave some of the WiredTiger files in an unclean state and prevent startup.&lt;/p&gt;

&lt;p&gt;I&apos;ll try to repair these files and upload the results. In the meantime I strongly urge you to upgrade to the latest MongoDB version (3.0.9 in the v3.0 branch, 3.2.3 in the v3.2 branch).&lt;/p&gt;</comment>
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            <issuekey id="224556">SERVER-19815</issuekey>
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                <attachments>
                            <attachment id="110266" name="WiredTiger.turtle" size="902" author="a.dobre" created="Tue, 23 Feb 2016 16:07:45 +0000"/>
                            <attachment id="110267" name="WiredTiger.wt" size="450560" author="a.dobre" created="Tue, 23 Feb 2016 16:07:45 +0000"/>
                            <attachment id="110264" name="_mdb_catalog.wt" size="45056" author="a.dobre" created="Tue, 23 Feb 2016 16:07:45 +0000"/>
                            <attachment id="110291" name="repair_attempt.tgz" size="27918" author="ramon.fernandez@mongodb.com" created="Tue, 23 Feb 2016 16:46:37 +0000"/>
                            <attachment id="110265" name="sizeStorer.wt" size="77824" author="a.dobre" created="Tue, 23 Feb 2016 16:07:45 +0000"/>
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