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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-25998] journal/WiredTigerLog.0000000222 corrupted</title>
                <link>https://jira.mongodb.org/browse/SERVER-25998</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Power failure on server now getting this error when I try to start.  Repair operation fails.&lt;/p&gt;

&lt;p&gt;2016-09-07T15:19:25.542+0000 E STORAGE  &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger (-31802) &lt;span class=&quot;error&quot;&gt;&amp;#91;1473261565:542419&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;19988:0x7fba68a4fd40&amp;#93;&lt;/span&gt;, txn-recover: log file journal/WiredTigerLog.0000000222 corrupted: Bad magic number 740455270: WT_ERROR: non-specific WiredTiger error&lt;br/&gt;
2016-09-07T15:19:25.542+0000 E STORAGE  &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; WiredTiger (-31804) &lt;span class=&quot;error&quot;&gt;&amp;#91;1473261565:542655&amp;#93;&lt;/span&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;19988:0x7fba68a4fd40&amp;#93;&lt;/span&gt;, txn-recover: the process must exit and restart: WT_PANIC: WiredTiger library panic&lt;br/&gt;
2016-09-07T15:19:25.542+0000 I -        &lt;span class=&quot;error&quot;&gt;&amp;#91;initandlisten&amp;#93;&lt;/span&gt; Fatal Assertion 28558&lt;/p&gt;</description>
                <environment></environment>
        <key id="314647">SERVER-25998</key>
            <summary>journal/WiredTigerLog.0000000222 corrupted</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="mortac8">Ashley Mort</reporter>
                        <labels>
                            <label>envns</label>
                            <label>rpo</label>
                            <label>trcf</label>
                            <label>wtc</label>
                    </labels>
                <created>Wed, 7 Sep 2016 15:26:13 +0000</created>
                <updated>Tue, 14 Aug 2018 14:10:09 +0000</updated>
                            <resolved>Thu, 8 Sep 2016 16:43:08 +0000</resolved>
                                    <version>3.2.6</version>
                                                    <component>WiredTiger</component>
                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1379669" author="thomas.schubert" created="Thu, 8 Sep 2016 16:43:08 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mortac8&quot; class=&quot;user-hover&quot; rel=&quot;mortac8&quot;&gt;mortac8&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;I&apos;m glad that deleting the subsequent log files resolved the issue. Since this issue appears to be the result of a filesystem bug, I am going to close this ticket.&lt;/p&gt;

&lt;p&gt;It is worth noting that the data in the corrupted file is not compressed. If you are using the default compression settings, WiredTiger did not write the contents of this file.&lt;/p&gt;

&lt;p&gt;Non-default compression settings would be most likely specified in your &lt;a href=&quot;https://docs.mongodb.com/manual/reference/configuration-options/#storage.wiredTiger.collectionConfig.blockCompressor&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;configuration file&lt;/a&gt;.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1379406" author="mortac8" created="Thu, 8 Sep 2016 12:36:21 +0000"  >&lt;p&gt;Deleting all log files except 0021 seems to have resolved my issue.  Thanks!&lt;/p&gt;</comment>
                            <comment id="1379066" author="mortac8" created="Wed, 7 Sep 2016 23:29:24 +0000"  >&lt;p&gt;I believe I am using the default compression, snappy.  I&apos;m not positive how to confirm this.&lt;br/&gt;
File system is ext4.&lt;br/&gt;
I&apos;m not sure if fsck ran on reboot, this system has several users/admins.&lt;br/&gt;
I&apos;m not sure how many restarts...I probably attempted 8-10 restarts of mongod.&lt;/p&gt;

&lt;p&gt;&lt;span class=&quot;error&quot;&gt;&amp;#91;root@sandbox journal&amp;#93;&lt;/span&gt;# ls -l&lt;br/&gt;
total 1331336&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 09:12 WiredTigerLog.0000000221&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-06 13:56 WiredTigerLog.0000000222&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 13:36 WiredTigerLog.0000000223&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 13:55 WiredTigerLog.0000000224&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 14:01 WiredTigerLog.0000000225&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 14:09 WiredTigerLog.0000000226&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 14:09 WiredTigerLog.0000000227&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 root   root   104857728 2016-09-07 14:28 WiredTigerLog.0000000228&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 root   root   104857728 2016-09-07 14:29 WiredTigerLog.0000000229&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 root   root   104857728 2016-09-07 14:29 WiredTigerLog.0000000230&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 root   root   104857728 2016-09-07 14:29 WiredTigerLog.0000000231&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 root   root   104857728 2016-09-07 14:39 WiredTigerLog.0000000232&lt;br/&gt;
&lt;del&gt;rw-r&lt;/del&gt;&lt;del&gt;r&lt;/del&gt;- 1 mongod mongod 104857728 2016-09-07 15:19 WiredTigerLog.0000000233&lt;/p&gt;</comment>
                            <comment id="1378970" author="thomas.schubert" created="Wed, 7 Sep 2016 21:44:45 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=mortac8&quot; class=&quot;user-hover&quot; rel=&quot;mortac8&quot;&gt;mortac8&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for uploading the corrupted file. Please note that I have removed the attachment from this ticket in case it contains sensitive data.&lt;/p&gt;

&lt;p&gt;Since the uploaded file contains data that is not written to WiredTiger log files, this issue appears to be the result of a filesystem bug following the power failure.&lt;/p&gt;

&lt;ul&gt;
	&lt;li&gt;Would you please confirm you are using the &lt;a href=&quot;https://docs.mongodb.com/manual/core/wiredtiger/#compression&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;default compression setting&lt;/a&gt;, snappy?&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;To continue to investigate your system, please answer the following questions:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;What file system are you running?&lt;/li&gt;
	&lt;li&gt;Did you execute &lt;tt&gt;fsck&lt;/tt&gt; or its equivalent on reboot?&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;To understand whether this log file was active when the power failure occurred, please provide the following information:&lt;/p&gt;
&lt;ul&gt;
	&lt;li&gt;The output of &lt;tt&gt;ls -l&lt;/tt&gt; of the journal directory&lt;/li&gt;
	&lt;li&gt;The number of restarts have you attempted since the power failure (each restart creates the next log file)&lt;/li&gt;
&lt;/ul&gt;


&lt;p&gt;My recommendation would be to create a copy of your &lt;tt&gt;$dbpath&lt;/tt&gt; and attempt to restart after deleting the corrupted file and all subsequent log files. Please note that if 222 was not the last active log file, removing these files will lose some data, so I would suggest that you first test this procedure on a copy.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
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