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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>
    </build-info>


<item>
            <title>[LU-17147] sanity-lsnapshot test_1b: Fail to create lss_1b_0</title>
                <link>https://jira.whamcloud.com/browse/LU-17147</link>
                <project id="10000" key="LU">Lustre</project>
                    <description>&lt;p&gt;This issue was created by maloo for Alexander Boyko &amp;lt;c17825@cray.com&amp;gt;&lt;/p&gt;

&lt;p&gt;This issue relates to the following test suite run: &lt;a href=&quot;https://testing.whamcloud.com/test_sets/6df69fab-a0cd-49b7-a6dd-426a9c267d8a&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://testing.whamcloud.com/test_sets/6df69fab-a0cd-49b7-a6dd-426a9c267d8a&lt;/a&gt;&lt;/p&gt;

&lt;p&gt;test_1b failed with the following error:&lt;/p&gt;
&lt;div class=&quot;preformatted panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;preformattedContent panelContent&quot;&gt;
&lt;pre&gt;Create lss_1b_0
CMD: onyx-60vm8 /usr/sbin/lctl snapshot_create -F lustre -n lss_1b_0
onyx-60vm8: Fail to freeze barrier for lustre: Invalid argument
onyx-60vm8: Can&apos;t create the snapshot lss_1b_0
pdsh@onyx-60vm1: onyx-60vm8: ssh exited with exit code 22
CMD: onyx-60vm8 cat /var/log/lsnapshot.log
Mon Sep 25 18:02:19 2023 (784346:jt_snapshot_create:1532:lustre:ssh): Create snapshot lss_0_0 successfully with comment &amp;lt;(null)&amp;gt;, barrier , timeout &amp;lt;30&amp;gt;
Mon Sep 25 18:02:21 2023 (784875:jt_snapshot_create:1532:lustre:ssh): Create snapshot lss_0_1 successfully with comment &amp;lt;(null)&amp;gt;, barrier , timeout &amp;lt;-1&amp;gt;
Mon Sep 25 18:02:23 2023 (785404:jt_snapshot_create:1532:lustre:ssh): Create snapshot lss_0_2 successfully with comment , barrier , timeout &amp;lt;30&amp;gt;
Mon Sep 25 18:02:25 2023 (785933:jt_snapshot_create:1532:lustre:ssh): Create snapshot lss_0_3 successfully with comment , barrier , timeout &amp;lt;30&amp;gt;
Mon Sep 25 18:02:26 2023 (786462:jt_snapshot_create:1525:lustre:ssh): Can&apos;t create snapshot lss_0_0 with comment &amp;lt;(null)&amp;gt; barrier , timeout &amp;lt;30&amp;gt;: -17
Mon Sep 25 18:02:32 2023 (787140:jt_snapshot_create:1532:lustre:ssh): Create snapshot lss_1a_0 successfully with comment &amp;lt;(null)&amp;gt;, barrier , timeout &amp;lt;30&amp;gt;
Mon Sep 25 18:02:35 2023 (787677:jt_snapshot_mount:2520:lustre:ssh): The snapshot lss_1a_0 is mounted
Mon Sep 25 18:02:38 2023 (788595:jt_snapshot_umount:2675:lustre:ssh): the snapshot lss_1a_0 have been umounted
Mon Sep 25 18:02:44 2023 (789655:snapshot_create:1419:lustre:ssh): Can&apos;t set barrier within 30 seconds on lustre: rc = -22
Mon Sep 25 18:02:44 2023 (789655:jt_snapshot_create:1525:lustre:ssh): Can&apos;t create snapshot lss_1b_0 with comment &amp;lt;(null)&amp;gt; barrier , timeout &amp;lt;30&amp;gt;: -22
 sanity-lsnapshot test_1b: @@@@@@ FAIL: (1) Fail to create lss_1b_0 

[14771.317798] Lustre: DEBUG MARKER: == sanity-lsnapshot test 1b: mount snapshot without original filesystem mounted ========================================================== 18:02:43 (1695664963)
[14771.487370] Lustre: DEBUG MARKER: /usr/sbin/lctl snapshot_create -F lustre -n lss_1b_0
[14772.106064] Lustre: DEBUG MARKER: cat /var/log/lsnapshot.log
[14772.479236] Lustre: DEBUG MARKER: /usr/sbin/lctl mark  sanity-lsnapshot test_1b: @@@@@@ FAIL: \(1\) Fail to create lss_1b_0 
[14772.681271] Lustre: DEBUG MARKER: sanity-lsnapshot test_1b: @@@@@@ FAIL: (1) Fail to create lss_1b_0
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;p&gt;Test session details:&lt;br/&gt;
clients: &lt;a href=&quot;https://build.whamcloud.com/job/lustre-reviews/98866&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://build.whamcloud.com/job/lustre-reviews/98866&lt;/a&gt; - 4.18.0-477.21.1.el8_8.x86_64&lt;br/&gt;
servers: &lt;a href=&quot;https://build.whamcloud.com/job/lustre-reviews/98866&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://build.whamcloud.com/job/lustre-reviews/98866&lt;/a&gt; - 4.18.0-477.21.1.el8_lustre.x86_64&lt;/p&gt;

&lt;p&gt;&amp;lt;&amp;lt;Please provide additional information about the failure here&amp;gt;&amp;gt;&lt;/p&gt;







&lt;p&gt;VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV&lt;br/&gt;
sanity-lsnapshot test_1b - (1) Fail to create lss_1b_0&lt;/p&gt;</description>
                <environment></environment>
        <key id="78103">LU-17147</key>
            <summary>sanity-lsnapshot test_1b: Fail to create lss_1b_0</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="6">Not a Bug</resolution>
                                        <assignee username="wc-triage">WC Triage</assignee>
                                    <reporter username="maloo">Maloo</reporter>
                        <labels>
                    </labels>
                <created>Tue, 26 Sep 2023 10:11:24 +0000</created>
                <updated>Wed, 18 Oct 2023 13:32:43 +0000</updated>
                            <resolved>Wed, 18 Oct 2023 13:32:43 +0000</resolved>
                                                                        <due></due>
                            <votes>0</votes>
                                    <watches>3</watches>
                                                                            <comments>
                            <comment id="387480" author="adilger" created="Thu, 28 Sep 2023 03:35:23 +0000"  >&lt;p&gt;This has only failed recently (and twice) with patch &lt;a href=&quot;https://review.whamcloud.com/52498&quot; class=&quot;external-link&quot; target=&quot;_blank&quot; rel=&quot;nofollow noopener&quot;&gt;https://review.whamcloud.com/52498&lt;/a&gt; &quot;&lt;tt&gt;&lt;a href=&quot;https://jira.whamcloud.com/browse/LU-17142&quot; title=&quot;MGC long time connection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;LU-17142&quot;&gt;&lt;del&gt;LU-17142&lt;/del&gt;&lt;/a&gt; mgc: reconnection without pinger&lt;/tt&gt;&quot; so it looks like the problem is being caused by that patch somehow.&lt;/p&gt;</comment>
                            <comment id="389575" author="aboyko" created="Tue, 17 Oct 2023 10:58:42 +0000"  >&lt;p&gt;I analyzed this issue. And It is really side effect of patch mgc: reconnection without pinger.&lt;br/&gt;
The situation is next&lt;br/&gt;
MGC reconnect to MGS and cancels all local locks. And when MGS sends glimpse ast, client replies with -22, EINVAL because client don&apos;t have a lock. And later MGS treat  this reply wrong, so mgs_barrier_freeze ends with -22.&lt;/p&gt;

&lt;div class=&quot;preformatted panel&quot; style=&quot;border-width: 1px;&quot;&gt;&lt;div class=&quot;preformattedContent panelContent&quot;&gt;
&lt;pre&gt;client
00010000:00010000:4.0:1693550583.414234:0:2655926:0:(ldlm_lockd.c:2456:ldlm_callback_handler()) callback on lock 0x28f467194556273 - lock disappeared
00010000:00010000:4.0:1693550583.416981:0:2655926:0:(ldlm_lockd.c:2361:ldlm_callback_errmsg()) @@@ Operate with invalid parameter, NID=12345-0@lo lock=0x28f46719455636f: rc = 0  req@0000000079795088 x1775816258196096/t0(0) o106-&amp;gt;b6ac8162-74c3-4f9e-abd8-ddbd41354f83@0@lo:279/0 lens 400/224 e 0 to 0 dl 1693550594 ref 1 fl Interpret:/0/0 rc -22/-22 job:&apos;&apos; uid:4294967295 gid:4294967295
server
20000000:00000001:5.0:1693550583.411102:0:2670065:0:(mgs_barrier.c:323:mgs_barrier_freeze()) Process entered
20000000:00000001:5.0:1693550583.411149:0:2670065:0:(mgs_barrier.c:128:mgs_barrier_glimpse_lock()) Process entered
20000000:00010000:5.0:1693550583.411348:0:2670065:0:(mgs_barrier.c:194:mgs_barrier_glimpse_lock()) ###  glimpse
20000000:00000001:5.0:1693550583.418575:0:2670065:0:(mgs_barrier.c:62:mgs_barrier_gl_interpret_reply()) Process entered
20000000:00000001:5.0:1693550583.418607:0:2670065:0:(mgs_barrier.c:71:mgs_barrier_gl_interpret_reply()) Process leaving via out (rc=18446744073709551594 : -22 : 0xffffffffffffffea)
20000000:00000001:5.0:1693550583.419278:0:2670065:0:(mgs_barrier.c:62:mgs_barrier_gl_interpret_reply()) Process entered
20000000:00000001:5.0:1693550583.419291:0:2670065:0:(mgs_barrier.c:71:mgs_barrier_gl_interpret_reply()) Process leaving via out (rc=18446744073709551594 : -22 : 0xffffffffffffffea)
20000000:00000001:4.0:1693550583.423784:0:2670065:0:(mgs_barrier.c:62:mgs_barrier_gl_interpret_reply()) Process entered
20000000:00000001:4.0:1693550583.423808:0:2670065:0:(mgs_barrier.c:88:mgs_barrier_gl_interpret_reply()) Process leaving via out (rc=0 : 0 : 0x0)
20000000:00000001:4.0:1693550583.465200:0:2670065:0:(mgs_barrier.c:62:mgs_barrier_gl_interpret_reply()) Process entered
20000000:00000001:4.0:1693550583.465212:0:2670065:0:(mgs_barrier.c:88:mgs_barrier_gl_interpret_reply()) Process leaving via out (rc=0 : 0 : 0x0)
20000000:00000001:4.0:1693550583.466645:0:2670065:0:(mgs_barrier.c:206:mgs_barrier_glimpse_lock()) Process leaving via out (rc=0 : 0 : 0x0)
20000000:00000001:4.0:1693550583.466677:0:2670065:0:(mgs_barrier.c:456:mgs_barrier_freeze()) Process leaving via out (rc=18446744073709551594 : -22 : 0xffffffffffffffea)
&lt;/pre&gt;
&lt;/div&gt;&lt;/div&gt;

&lt;p&gt;I&apos;ll fix it at main patch &lt;a href=&quot;https://jira.whamcloud.com/browse/LU-17142&quot; title=&quot;MGC long time connection&quot; class=&quot;issue-link&quot; data-issue-key=&quot;LU-17142&quot;&gt;&lt;del&gt;LU-17142&lt;/del&gt;&lt;/a&gt; .&lt;/p&gt;</comment>
                    </comments>
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