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-2075 Lustre <p>Hit this assertion immediately after resuming IO workloads using 2.3.51-2chaos.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>LustreError: 35701:0:(lod_object.c:750:lod_declare_object_create()) ASSERTION( !dt_object_exists(next) ) failed: LustreError: 35701:0:(lod_object.c:750:lod_declare_object_create()) LBUG Pid: 35701, comm: mdt01_007 Call Trace: [&lt;ffffffffa05b7965&gt;] libcfs_debug_dumpstack+0x55/0x80 [libcfs] [&lt;ffffffffa05b7f77&gt;] lbug_with_loc+0x47/0xb0 [libcfs] [&lt;ffffffffa0e5089c&gt;] lod_declare_object_create+0x22c/0x4f0 [lod] [&lt;ffffffffa0e8fccf&gt;] mdd_declare_object_create_internal+0xaf/0x1d0 [mdd] [&lt;ffffffffa0ea0c9a&gt;] mdd_create+0x39a/0x1550 [mdd] [&lt;ffffffffa0f0fc7c&gt;] mdt_md_create+0x51c/0x750 [mdt] [&lt;ffffffffa0f10063&gt;] mdt_reint_create+0x1b3/0x710 [mdt] [&lt;ffffffffa0f0db71&gt;] mdt_reint_rec+0x41/0xe0 [mdt] [&lt;ffffffffa0f06f53&gt;] mdt_reint_internal+0x4f3/0x7f0 [mdt] [&lt;ffffffffa0f07294&gt;] mdt_reint+0x44/0xe0 [mdt] [&lt;ffffffffa0ef8132&gt;] mdt_handle_common+0x932/0x1770 [mdt] [&lt;ffffffffa0ef9045&gt;] mdt_regular_handle+0x15/0x20 [mdt] [&lt;ffffffffa09507fc&gt;] ptlrpc_server_handle_request+0x41c/0xe00 [ptlrpc] [&lt;ffffffffa05b86be&gt;] ? cfs_timer_arm+0xe/0x10 [libcfs] [&lt;ffffffffa05ca13f&gt;] ? lc_watchdog_touch+0x6f/0x180 [libcfs] [&lt;ffffffffa0947bb7&gt;] ? ptlrpc_wait_event+0xa7/0x2a0 [ptlrpc] [&lt;ffffffff81051ba3&gt;] ? __wake_up+0x53/0x70 [&lt;ffffffffa0951dd1&gt;] ptlrpc_main+0xbf1/0x19e0 [ptlrpc] [&lt;ffffffffa09511e0&gt;] ? ptlrpc_main+0x0/0x19e0 [ptlrpc] [&lt;ffffffff8100c14a&gt;] child_rip+0xa/0x20 [&lt;ffffffffa09511e0&gt;] ? ptlrpc_main+0x0/0x19e0 [ptlrpc] [&lt;ffffffffa09511e0&gt;] ? ptlrpc_main+0x0/0x19e0 [ptlrpc] [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 Kernel panic - not syncing: LBUG Pid: 35701, comm: mdt01_007 Tainted: P W ---------------- 2.6.32-220.23.1.1chaos.ch5.x86_64 #1 Call Trace: [&lt;ffffffff814ee992&gt;] ? panic+0x78/0x143 [&lt;ffffffffa05b7fcb&gt;] ? lbug_with_loc+0x9b/0xb0 [libcfs] [&lt;ffffffffa0e5089c&gt;] ? lod_declare_object_create+0x22c/0x4f0 [lod] [&lt;ffffffffa0e8fccf&gt;] ? mdd_declare_object_create_internal+0xaf/0x1d0 [mdd] [&lt;ffffffffa0ea0c9a&gt;] ? mdd_create+0x39a/0x1550 [mdd] [&lt;ffffffffa0f0fc7c&gt;] ? mdt_md_create+0x51c/0x750 [mdt] [&lt;ffffffffa0f10063&gt;] ? mdt_reint_create+0x1b3/0x710 [mdt] [&lt;ffffffffa0f0db71&gt;] ? mdt_reint_rec+0x41/0xe0 [mdt] [&lt;ffffffffa0f06f53&gt;] ? mdt_reint_internal+0x4f3/0x7f0 [mdt] [&lt;ffffffffa0f07294&gt;] ? mdt_reint+0x44/0xe0 [mdt] [&lt;ffffffffa0ef8132&gt;] ? mdt_handle_common+0x932/0x1770 [mdt] [&lt;ffffffffa0ef9045&gt;] ? mdt_regular_handle+0x15/0x20 [mdt] [&lt;ffffffffa09507fc&gt;] ? ptlrpc_server_handle_request+0x41c/0xe00 [ptlrpc] [&lt;ffffffffa05b86be&gt;] ? cfs_timer_arm+0xe/0x10 [libcfs] [&lt;ffffffffa05ca13f&gt;] ? lc_watchdog_touch+0x6f/0x180 [libcfs] [&lt;ffffffffa0947bb7&gt;] ? ptlrpc_wait_event+0xa7/0x2a0 [ptlrpc] [&lt;ffffffff81051ba3&gt;] ? __wake_up+0x53/0x70 [&lt;ffffffffa0951dd1&gt;] ? ptlrpc_main+0xbf1/0x19e0 [ptlrpc] [&lt;ffffffffa09511e0&gt;] ? ptlrpc_main+0x0/0x19e0 [ptlrpc] [&lt;ffffffff8100c14a&gt;] ? child_rip+0xa/0x20 [&lt;ffffffffa09511e0&gt;] ? ptlrpc_main+0x0/0x19e0 [ptlrpc] [&lt;ffffffffa09511e0&gt;] ? ptlrpc_main+0x0/0x19e0 [ptlrpc] [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 </pre> </div></div> LU-2075

Assertion triggered in lod_declare_object_create

Bug Critical Resolved Fixed Alex Zhuravlev Prakash Surya topsequoia Tue, 2 Oct 2012 13:15:30 +0000 Fri, 19 Apr 2013 14:50:52 +0000 Mon, 8 Oct 2012 01:17:40 +0000 Lustre 2.4.0 0 7 <p>Prakash, this is an existing setup ? could you please try a fresh one ?<br/> (i'd like to get the direction of the investigation).</p> <p>This filesystem was updated from our previous Orion branch. I brought the MDS up last night and the OSTs this morning following <a href="https://jira.whamcloud.com/browse/LU-2069" title="Cannot start ZFS-backed OST: &quot;Can&#39;t find fsfilt_osd-zfs interface&quot;" class="issue-link" data-issue-key="LU-2069"><del>LU-2069</del></a>. The clients are also running the new 2.3.51-2chaos tag.</p> <p>What you do mean by "try a fresh one"?</p> <p>OK, got it. let me check one idea first.</p> <p>by a fresh one i meant another filesystem, created with new master's utilities.<br/> I'm going to try this locally.</p> <p>We don't really have hardware to try reformatting a new FS at the moment. The best I could do is a VM.</p> <p>ok, let me dig this locally first. thanks.</p> <p>the root cause is found... working on the fix.</p> <p>please try with <a href="http://review.whamcloud.com/4158" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/4158</a></p> <p>Sure, I'll pull that into our tree.</p> <p>4158 landed to master</p> Development Rank 1|hzv4xj: Rank (Obsolete) 4332 Severity