Whamcloud Community JIRA https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 [LU-2962] MGT umount locks up when taking down the file system. https://jira.whamcloud.com/browse/LU-2962 Lustre LU-2962 MGT umount locks up when taking down the file system. Bug Critical Resolved Cannot Reproduce Bruno Faccini James A Simmons Thu, 14 Mar 2013 09:30:07 +0000 Thu, 18 Jul 2013 14:42:11 +0000 Thu, 18 Jul 2013 14:42:11 +0000 Lustre 2.4.0 0 4 <p>Hello James,<br/> I am afraid the vmcore is not enough and we'll also need the vmlinux (likely from kernel-debuginfo) and lustre-modules you run.</p> <p>I also pushed all the debug rpms into uploads/<a href="https://jira.whamcloud.com/browse/LU-2962" title="MGT umount locks up when taking down the file system." class="issue-link" data-issue-key="LU-2962"><del>LU-2962</del></a>/. These are the ones used for the test shot. Let me know if you need anything else.</p> <p>Thank's James, will get these new datas and let you know asap.</p> <p>James,<br/> In the crash-dump you uploaded, there is no MGS mount nor Lustre modules loaded !!...<br/> BTW it has been taken on Jan 16th, after only 224s of uptime:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> KERNEL: usr/lib/debug/lib/modules/2.6.32-279.14.1.el6.head.x86_64/vmlinux DUMPFILE: ./vmcore-mgs [PARTIAL DUMP] CPUS: 8 DATE: Wed Jan 16 14:21:18 2013 UPTIME: 00:03:44 LOAD AVERAGE: 2.20, 1.44, 0.60 TASKS: 285 NODENAME: widow-mgs2 RELEASE: 2.6.32-279.14.1.el6.head.x86_64 VERSION: #1 SMP Wed Nov 21 13:02:32 EST 2012 MACHINE: x86_64 (2327 Mhz) MEMORY: 16 GB PANIC: "[ 224.469800] Oops: 0002 [#1] SMP " (check log for details) </pre> </div></div> <p>I don't think this could be the crash-dump taken from the situation you described in this ticket ...<br/> Can you double-check ??</p> <p>Sure as soon as admin comes in tomorrow I will get the proper core dump. Sorry about that.</p> <p>No problem James.</p> <p>I have bad news. The admin never got a crash dump <img class="emoticon" src="https://jira.whamcloud.com/images/icons/emoticons/sad.png" height="16" width="16" align="absmiddle" alt="" border="0"/> We are going to have to reproduce it at a smaller scale.</p> <p>James, Do you agree that we can reduce ticket's priority to Major ?</p> <p>I figure the reason for this was that it only occurs are very large scale so it doesn't impact every one. Now it would be nice to see this fixed before the release <img class="emoticon" src="https://jira.whamcloud.com/images/icons/emoticons/smile.png" height="16" width="16" align="absmiddle" alt="" border="0"/> I have a test shot this week end coming up so we can see if the problem still exist and if it does we can get a crash dump this time.</p> <p>For the last test shot we did not get a lock up so that is the good news. It did take 5 minutes to unmount the MGT but it is not a show stopper for us.</p> <p>James, what about this quite old ticket, can we close it as never reproduced ?</p> <p>Yes please close the ticket.</p> <p>Thanks for your feedback James.</p> Development Rank 1|hzvlcv: Rank (Obsolete) 7225 Severity