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        <build-number>970001</build-number>
        <build-date>13-04-2023</build-date>
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            <title>[DOCS-10265] Back up documentation should specify a majority of CSRS nodes need to be fsyncLock&apos;d</title>
                <link>https://jira.mongodb.org/browse/DOCS-10265</link>
                <project id="10380" key="DOCS">Documentation</project>
                    <description>&lt;p&gt;The backup procedure described on this page: &lt;a href=&quot;https://docs.mongodb.com/manual/tutorial/backup-sharded-cluster-with-database-dumps/#lock-config-server-replica-set-secondary&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://docs.mongodb.com/manual/tutorial/backup-sharded-cluster-with-database-dumps/#lock-config-server-replica-set-secondary&lt;/a&gt; should specify that a majority of CSRS secondary nodes should be fsyncLock&apos;d for the duration of taking the backups.&lt;/p&gt;

&lt;p&gt;The point of the fsyncLock is to prevent writes to the config server during the backup. Locking only one CSRS node will not prevent majority writes in a typical 3-node CSRS deployment.&lt;/p&gt;

&lt;p&gt;(The documentation currently says that only one secondary needs to be fsyncLock&apos;d; maybe this is a relic from SCCC config servers, where it was enough to fsyncLock one config node to prevent writes?)&lt;/p&gt;

&lt;p&gt;This part:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Lock config server replica set secondary.&lt;/p&gt;&lt;/blockquote&gt;

&lt;p&gt;should be updated to say:&lt;/p&gt;

&lt;blockquote&gt;
&lt;p&gt;Prevent writes to the config servers by locking config server secondaries.&lt;/p&gt;

&lt;p&gt;If the config servers are CSRS, the following steps should be applied on a &lt;b&gt;majority&lt;/b&gt; of CSRS secondaries.&lt;/p&gt;

&lt;p&gt;If the config servers are SCCC, the following steps need only be applied to a single SCCC node.&lt;/p&gt;&lt;/blockquote&gt;</description>
                <environment></environment>
        <key id="384136">DOCS-10265</key>
            <summary>Back up documentation should specify a majority of CSRS nodes need to be fsyncLock&apos;d</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="12300">Won&apos;t Do</resolution>
                                        <assignee username="kay.kim@mongodb.com">Kay Kim</assignee>
                                    <reporter username="esha.maharishi@mongodb.com">Esha Maharishi</reporter>
                        <labels>
                    </labels>
                <created>Tue, 16 May 2017 21:59:26 +0000</created>
                <updated>Mon, 30 Oct 2023 21:12:14 +0000</updated>
                                                            <fixVersion>Server_Docs_20231030</fixVersion>
                                    <component>manual</component>
                    <component>Server</component>
                        <due></due>
                            <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="4940738" author="edu.bot" created="Mon, 31 Oct 2022 16:10:10 +0000"  >&lt;p&gt;Hello! This ticket has been closed due to inactivity. If you believe this ticket is still important, please reopen it and leave a comment to explain why. Thank you!&lt;/p&gt;</comment>
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