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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-9358] Log rotation can overwrite previous log files</title>
                <link>https://jira.mongodb.org/browse/SERVER-9358</link>
                <project id="10000" key="SERVER">Core Server</project>
                    <description>&lt;div class=&quot;panel&quot; style=&quot;background-color: #EEEEEE;border-color: #ccc;border-width: 1px;&quot;&gt;&lt;div class=&quot;panelHeader&quot; style=&quot;border-bottom-width: 1px;border-bottom-color: #ccc;background-color: #6CB33F;&quot;&gt;&lt;b&gt;Issue Status as of April 15, 2014&lt;/b&gt;&lt;/div&gt;&lt;div class=&quot;panelContent&quot; style=&quot;background-color: #EEEEEE;&quot;&gt;
&lt;p&gt;&lt;b&gt;ISSUE SUMMARY&lt;/b&gt;&lt;br/&gt;
If one rotates the log twice within one second, the previously rotated log will get overwritten by the new log. This is because the timestamped filename is not unique and the rename() function clobbers the destination with no warning.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;USER IMPACT&lt;/b&gt;&lt;br/&gt;
Users rotating a log more than once per second will lose all log information from the last log rotation up to that point.&lt;/p&gt;

&lt;p&gt;Enterprise users using the 2.6.0 audit facility will also be affected by this issue, and issuing more than one log rotation per second will result in lost audit logs.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;WORKAROUNDS&lt;/b&gt;&lt;br/&gt;
Wait more than 1 second between log rotations.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;RESOLUTION&lt;/b&gt;&lt;br/&gt;
The rename() function no longer clobbers existing log files, but fails with an error message if the destination file already exists.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;AFFECTED VERSIONS&lt;/b&gt;&lt;br/&gt;
All recent production releases up to 2.6.0 are affected.&lt;/p&gt;

&lt;p&gt;&lt;b&gt;PATCHES&lt;/b&gt;&lt;br/&gt;
The patch is included in the 2.6.1 production release.&lt;/p&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;h6&gt;&lt;a name=&quot;Originaldescription&quot;&gt;&lt;/a&gt;Original description&lt;/h6&gt;

&lt;p&gt;If one rotates the log twice within one second, the previously rotated log will get overwritten by the new (and probably very small) log.  This is because the timestamped filename is not unique and the rename() function clobbers the destination with no warning.&lt;/p&gt;</description>
                <environment></environment>
        <key id="71953">SERVER-9358</key>
            <summary>Log rotation can overwrite previous log files</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="spencer@mongodb.com">Spencer Brody</assignee>
                                    <reporter username="milkie@mongodb.com">Eric Milkie</reporter>
                        <labels>
                            <label>Auditing</label>
                    </labels>
                <created>Tue, 16 Apr 2013 14:46:43 +0000</created>
                <updated>Mon, 11 Jul 2016 17:58:42 +0000</updated>
                            <resolved>Fri, 11 Apr 2014 18:45:40 +0000</resolved>
                                                    <fixVersion>2.6.1</fixVersion>
                    <fixVersion>2.7.0</fixVersion>
                                    <component>Logging</component>
                    <component>Security</component>
                                        <votes>0</votes>
                                    <watches>5</watches>
                                                                                                                <comments>
                            <comment id="548805" author="xgen-internal-githook" created="Mon, 14 Apr 2014 17:44:57 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9358&quot; title=&quot;Log rotation can overwrite previous log files&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9358&quot;&gt;&lt;del&gt;SERVER-9358&lt;/del&gt;&lt;/a&gt; Prevent logRotate twice in the same second from losing log data&lt;/p&gt;

&lt;p&gt;(cherry picked from commit d53521c9534d579d44582bb06cb37d73ffeab931)&lt;br/&gt;
Branch: v2.6&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/279163e3802cf5b538b22eac9302419f0f7bb6f8&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/279163e3802cf5b538b22eac9302419f0f7bb6f8&lt;/a&gt;&lt;/p&gt;</comment>
                            <comment id="545611" author="xgen-internal-githook" created="Fri, 11 Apr 2014 18:26:59 +0000"  >&lt;p&gt;Author:&lt;/p&gt;
{u&apos;username&apos;: u&apos;stbrody&apos;, u&apos;name&apos;: u&apos;Spencer T Brody&apos;, u&apos;email&apos;: u&apos;spencer@mongodb.com&apos;}
&lt;p&gt;Message: &lt;a href=&quot;https://jira.mongodb.org/browse/SERVER-9358&quot; title=&quot;Log rotation can overwrite previous log files&quot; class=&quot;issue-link&quot; data-issue-key=&quot;SERVER-9358&quot;&gt;&lt;del&gt;SERVER-9358&lt;/del&gt;&lt;/a&gt; Prevent logRotate twice in the same second from losing log data&lt;br/&gt;
Branch: master&lt;br/&gt;
&lt;a href=&quot;https://github.com/mongodb/mongo/commit/d53521c9534d579d44582bb06cb37d73ffeab931&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://github.com/mongodb/mongo/commit/d53521c9534d579d44582bb06cb37d73ffeab931&lt;/a&gt;&lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10012">
                    <name>Related</name>
                                            <outwardlinks description="related to">
                                        <issuelink>
            <issuekey id="30138">SERVER-4905</issuekey>
        </issuelink>
                            </outwardlinks>
                                                                <inwardlinks description="is related to">
                                        <issuelink>
            <issuekey id="178428">SERVER-16821</issuekey>
        </issuelink>
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