https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 https://jira.whamcloud.com/browse/LU-5057 Lustre <p>I keep seeing this issue on racer test. If someone is working on this issue and need more log, please feel free to contact me.</p> <p>LustreError: 24020:0:(ofd_dev.c:859:ofd_fini()) ASSERTION( atomic_read(&amp;d-&gt;ld_ref) == 0 ) failed: <br/> LustreError: 24020:0:(ofd_dev.c:859:ofd_fini()) LBUG<br/> Pid: 24020, comm: umount</p> <p>Call Trace:<br/> <span class="error">&#91;&lt;ffffffffa03a3895&gt;&#93;</span> libcfs_debug_dumpstack+0x55/0x80 <span class="error">&#91;libcfs&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa03a3e97&gt;&#93;</span> lbug_with_loc+0x47/0xb0 <span class="error">&#91;libcfs&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0e16b2b&gt;&#93;</span> ofd_device_fini+0x23b/0x240 <span class="error">&#91;ofd&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa051c5d3&gt;&#93;</span> class_cleanup+0x573/0xd30 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa04f30b6&gt;&#93;</span> ? class_name2dev+0x56/0xe0 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa051e2fa&gt;&#93;</span> class_process_config+0x156a/0x1ad0 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0517453&gt;&#93;</span> ? lustre_cfg_new+0x2d3/0x6e0 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa051e9d9&gt;&#93;</span> class_manual_cleanup+0x179/0x6f0 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa04f30b6&gt;&#93;</span> ? class_name2dev+0x56/0xe0 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0552fbc&gt;&#93;</span> server_put_super+0x5ec/0xf60 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffff8118366b&gt;&#93;</span> generic_shutdown_super+0x5b/0xe0<br/> <span class="error">&#91;&lt;ffffffff81183756&gt;&#93;</span> kill_anon_super+0x16/0x60<br/> <span class="error">&#91;&lt;ffffffffa0520886&gt;&#93;</span> lustre_kill_super+0x36/0x60 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffff81183ef7&gt;&#93;</span> deactivate_super+0x57/0x80<br/> <span class="error">&#91;&lt;ffffffff811a21ef&gt;&#93;</span> mntput_no_expire+0xbf/0x110<br/> <span class="error">&#91;&lt;ffffffff811a2c5b&gt;&#93;</span> sys_umount+0x7b/0x3a0<br/> <span class="error">&#91;&lt;ffffffff8100b072&gt;&#93;</span> system_call_fastpath+0x16/0x1b</p> LU-5057

ofd_fini()) ASSERTION( atomic_read(&d->ld_ref) == 0 ) failed:

Bug Major Resolved Duplicate Mikhail Pershin Jinshan Xiong Tue, 13 May 2014 16:38:32 +0000 Mon, 6 Apr 2015 15:42:12 +0000 Mon, 6 Apr 2015 15:42:12 +0000 Lustre 2.6.0 0 7 <p>Cray has seen this recently in our testing as well.</p> <p>Mike, any idea on what might be causing this? Oleg has crash dumps from this situation as well, and it started a few months ago. </p> <p>For what it's worth, we hit this in a fairly clean (IE, close to Intel's) version of 2.5.1. If requested, I might be able to make the dump available, though only default debug was enabled.</p> <p>well, such errors means that device has still references, objects most likely. Usually this is missed object put in some rare code path.</p> <p>Jinshan, Patrick, are you still seeing this bug in your testing?</p> <p>Andreas - No. We have not seen this again since my report above, and we have been running racer in the same configurations regularly since then. It seems very likely this was fixed, or is so rare as to not be a concern.</p> <p>I saw this issue again. Please check the attachment for the log.</p> <p>duplication of <a href="https://jira.whamcloud.com/browse/LU-6434" title="Object reference is not zero when umounting OST" class="issue-link" data-issue-key="LU-6434"><del>LU-6434</del></a></p> Related LU-6434 Development Rank 1|hzwmfj: Rank (Obsolete) 13968 Severity