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-4083 Lustre <p>I saw this crash when I was running racer.</p> <p>LustreError: 17343:0:(lod_lov.c:824:lod_load_striping()) ASSERTION( lo-&gt;ldo_stripenr == 0 ) failed: <br/> LustreError: 17343:0:(lod_lov.c:824:lod_load_striping()) LBUG<br/> Pid: 17343, comm: mdt03_007</p> <p>Call Trace:<br/> <span class="error">&#91;&lt;ffffffffa04c2895&gt;&#93;</span> libcfs_debug_dumpstack+0x55/0x80 <span class="error">&#91;libcfs&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa04c2e97&gt;&#93;</span> lbug_with_loc+0x47/0xb0 <span class="error">&#91;libcfs&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0efded3&gt;&#93;</span> lod_load_striping+0x383/0x4b0 <span class="error">&#91;lod&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0f08bab&gt;&#93;</span> lod_declare_object_destroy+0x16b/0x390 <span class="error">&#91;lod&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0c972a0&gt;&#93;</span> mdd_declare_finish_unlink+0x90/0x170 <span class="error">&#91;mdd&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0ca0579&gt;&#93;</span> mdd_rename+0x1eb9/0x2390 <span class="error">&#91;mdd&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0e10143&gt;&#93;</span> mdt_reint_rename+0x1383/0x1bf0 <span class="error">&#91;mdt&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa066ad60&gt;&#93;</span> ? lu_ucred+0x20/0x30 <span class="error">&#91;obdclass&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0e0aea1&gt;&#93;</span> mdt_reint_rec+0x41/0xe0 <span class="error">&#91;mdt&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0df2c93&gt;&#93;</span> mdt_reint_internal+0x4c3/0x780 <span class="error">&#91;mdt&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0df2f94&gt;&#93;</span> mdt_reint+0x44/0xe0 <span class="error">&#91;mdt&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0df5a8a&gt;&#93;</span> mdt_handle_common+0x52a/0x1470 <span class="error">&#91;mdt&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa0e2fc45&gt;&#93;</span> mds_regular_handle+0x15/0x20 <span class="error">&#91;mdt&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa07d9e25&gt;&#93;</span> ptlrpc_server_handle_request+0x385/0xc00 <span class="error">&#91;ptlrpc&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa04d427f&gt;&#93;</span> ? lc_watchdog_touch+0x6f/0x170 <span class="error">&#91;libcfs&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa07d14c9&gt;&#93;</span> ? ptlrpc_wait_event+0xa9/0x2d0 <span class="error">&#91;ptlrpc&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa07db18d&gt;&#93;</span> ptlrpc_main+0xaed/0x1740 <span class="error">&#91;ptlrpc&#93;</span><br/> <span class="error">&#91;&lt;ffffffffa07da6a0&gt;&#93;</span> ? ptlrpc_main+0x0/0x1740 <span class="error">&#91;ptlrpc&#93;</span><br/> <span class="error">&#91;&lt;ffffffff81096a36&gt;&#93;</span> kthread+0x96/0xa0<br/> <span class="error">&#91;&lt;ffffffff8100c0ca&gt;&#93;</span> child_rip+0xa/0x20<br/> <span class="error">&#91;&lt;ffffffff810969a0&gt;&#93;</span> ? kthread+0x0/0xa0<br/> <span class="error">&#91;&lt;ffffffff8100c0c0&gt;&#93;</span> ? child_rip+0x0/0x20</p> <p>LustreError: dumping log to /tmp/lustre-log.1381356940.17343</p> LU-4083

lod_lov.c:824:lod_load_striping()) ASSERTION( lo->ldo_stripenr == 0 ) failed

Bug Blocker Resolved Fixed James Nunez Jinshan Xiong Thu, 10 Oct 2013 03:10:42 +0000 Thu, 6 Mar 2014 16:43:30 +0000 Mon, 2 Dec 2013 14:11:26 +0000 Lustre 2.5.0 Lustre 2.6.0 Lustre 2.5.1 0 9 <p>After applying this patch, the issue went away:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">diff --git a/lustre/lod/lod_qos.c b/lustre/lod/lod_qos.c index e7b1de0..49575b7 100644 --- a/lustre/lod/lod_qos.c +++ b/lustre/lod/lod_qos.c @@ -813,6 +813,7 @@ repeat_find: rc = 0; } <span class="code-keyword">else</span> { <span class="code-comment">/* nobody provided us with a single object */</span> + lo-&gt;ldo_stripenr = 0; rc = -ENOSPC; } </pre> </div></div> <p>James</p> <p>Could you please upload this patch into gerrit on behalf of Jinshan?</p> <p>Peter</p> <p>Patch at: <a href="http://review.whamcloud.com/7919" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/7919</a></p> <p>I just want to add that I also hit this pretty frequently and it disrupts my testing. As such I am increasing priority to critical.</p> <p>Patch landed to master.</p> <p>Is this a duplicate of <a href="https://jira.hpdd.intel.com/browse/LU-2789" class="external-link" target="_blank" rel="nofollow noopener">https://jira.hpdd.intel.com/browse/LU-2789</a> ?</p> <p>From the fixes, they tentatively appear to take the same lock, but around different operations. Is it the same race condition or a different one?</p> <p>FWIW we have this this with a production lustre system running 2.5.0</p> <p>Will apply the patch and LU2789 and move on.</p> Related LU-2789 Development Rank 1|hzw5av: Rank (Obsolete) 10975 Severity