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    <title>Whamcloud Community JIRA</title>
    <link>https://jira.whamcloud.com</link>
    <description>This file is an XML representation of an issue</description>
    <language>en-us</language>    <build-info>
        <version>9.4.14</version>
        <build-number>940014</build-number>
        <build-date>05-12-2023</build-date>
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<item>
            <title>[LU-15361] lfs df output is incorrect</title>
                <link>https://jira.whamcloud.com/browse/LU-15361</link>
                <project id="10000" key="LU">Lustre</project>
                    <description>&lt;p&gt;When multiple threads use lfs df concurrently, some commands return incorrect results&lt;/p&gt;
&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;
cat df_test.sh&#160;
#!/bin/bashfor i in {1..3}; &lt;span class=&quot;code-keyword&quot;&gt;do&lt;/span&gt;
&#160; &#160; lfs df /mnt/lustre &amp;gt;&amp;gt; /tmp/lfsdf/lfs_df${i} &amp;amp;
done &lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;&#160;&lt;/p&gt;
&lt;div class=&quot;code panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;codeContent panelContent&quot;&gt;
&lt;pre class=&quot;code-java&quot;&gt;
cat /tmp/lfsdf/lfs_df2
UUID &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; &#160; 1K-blocks &#160; &#160; &#160; &#160;Used &#160; Available Use% Mounted on
jiahtest-MDT0000_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:0]
jiahtest-MDT0001_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:1]
jiahtest-MDT0002_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:2]
jiahtest-MDT0003_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:3]
jiahtest-MDT0004_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:4]
jiahtest-MDT0005_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:5]
jiahtest-MDT0006_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:6]
jiahtest-MDT0007_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[MDT:7]
jiahtest-OST0005_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:5]
jiahtest-OST0007_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:7]
jiahtest-OST0018_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:24]
jiahtest-OST001a_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:26]
jiahtest-OST0021_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:33]
jiahtest-OST0025_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:37]
jiahtest-OST0027_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:39]
jiahtest-OST0030_UUID &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; &#160; &#160; &#160; &#160; 0 &#160; 0% /mnt/lustre[OST:48]
jiahtest-OST0105_UUID &#160;1453120284 &#160; 593239236 &#160; 786464344 &#160;43% /mnt/lustre[OST:261]
jiahtest-OST0107_UUID &#160;1453120284 &#160; 600055700 &#160; 779647880 &#160;44% /mnt/lustre[OST:263]
jiahtest-OST0118_UUID &#160;1453120284 &#160; 600927244 &#160; 778776336 &#160;44% /mnt/lustre[OST:280]
jiahtest-OST011a_UUID &#160;1453120284 &#160; 565686476 &#160; 814017104 &#160;42% /mnt/lustre[OST:282]
jiahtest-OST0121_UUID &#160;1453120284 &#160; 565681484 &#160; 814022096 &#160;42% /mnt/lustre[OST:289]
jiahtest-OST0125_UUID &#160;1453120284 &#160; 565690748 &#160; 814012832 &#160;42% /mnt/lustre[OST:293]
jiahtest-OST0127_UUID &#160;1453120284 &#160; 565681788 &#160; 814021792 &#160;42% /mnt/lustre[OST:295]
jiahtest-OST0130_UUID &#160;1453120284 &#160; 565919992 &#160; 813783588 &#160;42% /mnt/lustre[OST:304]filesystem_summary: &#160;11624962272 &#160;4622882668 &#160;6414745972 &#160;42% /mnt/lustre&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;
&lt;p&gt;Use wireshark to analyze the data packet and found that there is no 0 value in the statfs returned by mds. It is estimated that there is a problem with the client&lt;/p&gt;

&lt;p&gt;&#160;&lt;br/&gt;
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&#12288;&#12288;muzitest-MDT0004_UUID 0 0 0 0% / mnt /&#20809;&#27901;(&#32852;&#21512;&#21270;&#30103;:4) &#12288;&#12288;muzitest-MDT0005_UUID 0 0 0 0% / mnt /&#20809;&#27901;(&#32852;&#21512;&#21270;&#30103;:5) &#12288;&#12288;muzitest-MDT0006_UUID 0 0 0 0% / mnt /&#20809;&#27901;(&#32852;&#21512;&#21270;&#30103;:6) &#12288;&#12288;muzitest-MDT0007_UUID 0 0 0 0% / mnt /&#20809;&#27901;(&#32852;&#21512;&#21270;&#30103;:7)&lt;/p&gt;</description>
                <environment></environment>
        <key id="67562">LU-15361</key>
            <summary>lfs df output is incorrect</summary>
                <type id="1" iconUrl="https://jira.whamcloud.com/secure/viewavatar?size=xsmall&amp;avatarId=11303&amp;avatarType=issuetype">Bug</type>
                                            <priority id="4" iconUrl="https://jira.whamcloud.com/images/icons/priorities/minor.svg">Minor</priority>
                        <status id="5" iconUrl="https://jira.whamcloud.com/images/icons/statuses/resolved.png" description="A resolution has been taken, and it is awaiting verification by reporter. From here issues are either reopened, or are closed.">Resolved</status>
                    <statusCategory id="3" key="done" colorName="success"/>
                                    <resolution id="3">Duplicate</resolution>
                                        <assignee username="wc-triage">WC Triage</assignee>
                                    <reporter username="jiahaoli">Jiahao Li</reporter>
                        <labels>
                    </labels>
                <created>Sat, 11 Dec 2021 02:34:28 +0000</created>
                <updated>Sat, 11 Dec 2021 04:54:42 +0000</updated>
                            <resolved>Sat, 11 Dec 2021 04:54:42 +0000</resolved>
                                    <version>Lustre 2.12.4</version>
                                                        <due></due>
                            <votes>0</votes>
                                    <watches>2</watches>
                                                                            <comments>
                            <comment id="320582" author="adilger" created="Sat, 11 Dec 2021 04:54:31 +0000"  >&lt;p&gt;This is fixed in the 2.12.5 client. &lt;/p&gt;</comment>
                    </comments>
                <issuelinks>
                            <issuelinktype id="10010">
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                                        <issuelink>
            <issuekey id="58185">LU-13296</issuekey>
        </issuelink>
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