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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-26361] WiredTiger.wt read checksum error</title>
                <link>https://jira.mongodb.org/browse/SERVER-26361</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;p&gt;Hi,&lt;br/&gt;
I&apos;ve a problem with mongodb. I stop the service and I wasn&apos;t able to start it again. &lt;/p&gt;

&lt;p&gt;When I try to start I&apos;ve the following errors:&lt;/p&gt;
&lt;p/&gt;
&lt;div id=&quot;syntaxplugin&quot; class=&quot;syntaxplugin&quot; style=&quot;border: 1px dashed #bbb; border-radius: 5px !important; overflow: auto; max-height: 30em;&quot;&gt;
&lt;table cellspacing=&quot;0&quot; cellpadding=&quot;0&quot; border=&quot;0&quot; width=&quot;100%&quot; style=&quot;font-size: 1em; line-height: 1.4em !important; font-weight: normal; font-style: normal; color: black;&quot;&gt;
		&lt;tbody &gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;  margin-top: 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2016-09-28T01:23:07.264+0800 I STORAGE  [initandlisten] wiredtiger_open config: create,cache_size=3G,session_max=20000,eviction=(threads_max=4),statistics=(fast),file_manager=(close_idle_time=100000),checkpoint=(wait=60,log_size=2GB),statistics_log=(wait=0),&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2016-09-28T01:23:07.276+0800 E STORAGE  [initandlisten] WiredTiger (0) [1474996987:276311][18976:0x7fbc41f32c20], file:WiredTiger.wt, connection: read checksum error for 4096B block at offset 16384: block header checksum of 2753424562 doesn&apos;t match expected checksum of 4062939573&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2016-09-28T01:23:07.276+0800 E STORAGE  [initandlisten] WiredTiger (0) [1474996987:276409][18976:0x7fbc41f32c20], file:WiredTiger.wt, connection: WiredTiger.wt: encountered an illegal file format or internal value&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2016-09-28T01:23:07.276+0800 E STORAGE  [initandlisten] WiredTiger (-31804) [1474996987:276443][18976:0x7fbc41f32c20], file:WiredTiger.wt, connection: the process must exit and restart: WT_PANIC: WiredTiger library panic&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2016-09-28T01:23:07.276+0800 I -        [initandlisten] Fatal Assertion 28558&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
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						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt;2016-09-28T01:23:07.300+0800 I CONTROL  [initandlisten]&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
				&lt;tr id=&quot;syntaxplugin_code_and_gutter&quot;&gt;
						&lt;td  style=&quot; line-height: 1.4em !important; padding: 0em; vertical-align: top;&quot;&gt;
					&lt;pre style=&quot;font-size: 1em; margin: 0 10px;   margin-bottom: 10px;  width: auto; padding: 0;&quot;&gt;&lt;span style=&quot;color: black; font-family: &apos;Consolas&apos;, &apos;Bitstream Vera Sans Mono&apos;, &apos;Courier New&apos;, Courier, monospace !important;&quot;&gt; 0xf75549 0xf12271 0xef60f1 0xd93f8a 0x13ab369 0x13ab525 0x13ab9c4 0x12fe3d2 0x131811c 0x1315ef8 0x1316d52 0x1340b4b 0x13aa50b 0x13780ab 0x133e207 0xd7e61c 0xd7c3a8 0xa7dc5d 0x7f57a2 0x7fa739 0x3d2f41ed1d 0x7f3549&lt;/span&gt;&lt;/pre&gt;
			&lt;/td&gt;
		&lt;/tr&gt;
			&lt;/tbody&gt;
&lt;/table&gt;
&lt;/div&gt;
&lt;p/&gt;

&lt;p&gt;Could you please help to recover my database, it&apos;s very important.&lt;br/&gt;
I attached two file where I think is the problem.&lt;/p&gt;</description>
                <environment></environment>
        <key id="319301">SERVER-26361</key>
            <summary>WiredTiger.wt 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="rjferreira">Ricardo Ferreira</reporter>
                        <labels>
                            <label>envns</label>
                            <label>rns</label>
                            <label>rps</label>
                            <label>trcf</label>
                            <label>wtc</label>
                    </labels>
                <created>Tue, 27 Sep 2016 21:52:42 +0000</created>
                <updated>Mon, 13 Aug 2018 20:23:48 +0000</updated>
                            <resolved>Wed, 28 Sep 2016 13:40:39 +0000</resolved>
                                    <version>3.0.6</version>
                                                                        <votes>0</votes>
                                    <watches>4</watches>
                                                                                                                <comments>
                            <comment id="1395535" author="thomas.schubert" created="Wed, 28 Sep 2016 13:40:27 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rjferreira&quot; class=&quot;user-hover&quot; rel=&quot;rjferreira&quot;&gt;rjferreira&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thanks for the update, I&apos;m glad the repair attempt was successful.&lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1395409" author="rjferreira" created="Wed, 28 Sep 2016 08:43:57 +0000"  >&lt;p&gt;Hi Thomas,&lt;/p&gt;

&lt;p&gt;It solved the problem.&lt;br/&gt;
Thanks a lot. &lt;/p&gt;

&lt;p&gt;Regards,&lt;br/&gt;
Ricardo&lt;/p&gt;</comment>
                            <comment id="1395248" author="thomas.schubert" created="Tue, 27 Sep 2016 23:32:09 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rjferreira&quot; class=&quot;user-hover&quot; rel=&quot;rjferreira&quot;&gt;rjferreira&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;Thank you for the additional information! I&apos;ve attached &lt;span class=&quot;nobr&quot;&gt;&lt;a href=&quot;https://jira.mongodb.org/secure/attachment/139840/139840_repair_attempt.tar.gz&quot; title=&quot;repair_attempt.tar.gz attached to SERVER-26361&quot;&gt;repair_attempt.tar.gz&lt;sup&gt;&lt;img class=&quot;rendericon&quot; src=&quot;https://jira.mongodb.org/images/icons/link_attachment_7.gif&quot; height=&quot;7&quot; width=&quot;7&quot; align=&quot;absmiddle&quot; alt=&quot;&quot; border=&quot;0&quot;/&gt;&lt;/sup&gt;&lt;/a&gt;&lt;/span&gt;. Please extract it and replace the repaired files in your &lt;tt&gt;$dbpath&lt;/tt&gt; and attempt to restart the mongod.&lt;/p&gt;

&lt;p&gt;Kind regards,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                            <comment id="1395214" author="rjferreira" created="Tue, 27 Sep 2016 22:34:30 +0000"  >&lt;p&gt;Here the answers:&lt;br/&gt;
1. Yes,The journaling was enable.&lt;br/&gt;
2. I&apos;m not able to answer this question. I just know we are using HDD&apos;s on a remote storage. I think we have RAID but I don&apos;t know the configuration.&lt;br/&gt;
3. I stopped the server with command db.shutdownServer();&lt;br/&gt;
4. I attached the logs. This happened during an upgrade from version 3.0.6 to version 3.2.8. After I updated the mongodb binaries with rpm process it changed permissions/owner dbpath directory. So I fixed the permissions problem but mongodb never stated again. I&apos;ve already tried the repair without success.&lt;/p&gt;</comment>
                            <comment id="1395179" author="thomas.schubert" created="Tue, 27 Sep 2016 22:10:31 +0000"  >&lt;p&gt;Hi &lt;a href=&quot;https://jira.mongodb.org/secure/ViewProfile.jspa?name=rjferreira&quot; class=&quot;user-hover&quot; rel=&quot;rjferreira&quot;&gt;rjferreira&lt;/a&gt;,&lt;/p&gt;

&lt;p&gt;I&apos;m working on a repair attempt, in the meantime, would you please answer the following questions so we get a better idea of what happened here?&lt;/p&gt;

&lt;ol&gt;
	&lt;li&gt;Are you using journaling?&lt;/li&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;Would you please clarify how you stopped the mongod?&lt;/li&gt;
	&lt;li&gt;Would you please upload the complete log, showing the shutdown that preceded the corruption?&lt;/li&gt;
&lt;/ol&gt;


&lt;p&gt;Thank you,&lt;br/&gt;
Thomas&lt;/p&gt;</comment>
                    </comments>
                    <attachments>
                            <attachment id="139830" name="WiredTiger.turtle" size="906" author="rjferreira" created="Tue, 27 Sep 2016 21:52:42 +0000"/>
                            <attachment id="139831" name="WiredTiger.wt" size="118784" author="rjferreira" created="Tue, 27 Sep 2016 21:52:42 +0000"/>
                            <attachment id="139836" name="mongod.log" size="9346" author="rjferreira" created="Tue, 27 Sep 2016 22:34:48 +0000"/>
                            <attachment id="139840" name="repair_attempt.tar.gz" size="5839" author="kelsey.schubert@mongodb.com" created="Tue, 27 Sep 2016 23:32:09 +0000"/>
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