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-1640 Lustre <p>This issue was created by maloo for sarah &lt;sarah@whamcloud.com&gt;</p> <p>This issue relates to the following test suite run: <a href="https://maloo.whamcloud.com/test_sets/dcdbf220-cd1f-11e1-957a-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/dcdbf220-cd1f-11e1-957a-52540035b04c</a>.</p> <p>The sub-test test_2c failed with the following error:</p> <blockquote> <p>test failed to respond and timed out</p></blockquote> <p>It seems the MDS is stuck for some reason</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>mdt00_000 D 0000000000000001 0 12165 2 0x00000080 ffff8800673a5aa0 0000000000000046 ffff8800779fdb40 ffff8800673a5b20 ffff8800673a5a50 ffffc900018c502c 0000000000000246 0000000000000246 ffff8800355fc6b8 ffff8800673a5fd8 000000000000f4e8 ffff8800355fc6b8 Call Trace: [&lt;ffffffffa053b5d4&gt;] ? htable_lookup+0x1a4/0x1c0 [obdclass] [&lt;ffffffffa0ced77e&gt;] cfs_waitq_wait+0xe/0x10 [libcfs] [&lt;ffffffffa053b6a0&gt;] lu_object_find_at+0xb0/0x450 [obdclass] [&lt;ffffffff8105ea30&gt;] ? default_wake_function+0x0/0x20 [&lt;ffffffffa053ba7f&gt;] lu_object_find_slice+0x1f/0x80 [obdclass] [&lt;ffffffffa095c160&gt;] mdd_object_find+0x10/0x70 [mdd] [&lt;ffffffffa096395f&gt;] mdd_path+0x35f/0x1060 [mdd] [&lt;ffffffffa053b67c&gt;] ? lu_object_find_at+0x8c/0x450 [obdclass] [&lt;ffffffffa0963600&gt;] ? mdd_path+0x0/0x1060 [mdd] [&lt;ffffffffa0af47da&gt;] cml_path+0x6a/0x180 [cmm] [&lt;ffffffffa09c9db6&gt;] ? mdt_object_find+0x66/0x170 [mdt] [&lt;ffffffffa09ce3ff&gt;] mdt_get_info+0x64f/0xa90 [mdt] [&lt;ffffffffa09c9f0d&gt;] ? mdt_unpack_req_pack_rep+0x4d/0x4d0 [mdt] [&lt;ffffffffa09d2922&gt;] mdt_handle_common+0x922/0x1740 [mdt] [&lt;ffffffffa09d3815&gt;] mdt_regular_handle+0x15/0x20 [mdt] [&lt;ffffffffa066757d&gt;] ptlrpc_server_handle_request+0x40d/0xea0 [ptlrpc] [&lt;ffffffffa0ced65e&gt;] ? cfs_timer_arm+0xe/0x10 [libcfs] [&lt;ffffffffa065ea37&gt;] ? ptlrpc_wait_event+0xa7/0x2a0 [ptlrpc] [&lt;ffffffff81051ba3&gt;] ? __wake_up+0x53/0x70 [&lt;ffffffffa0668b79&gt;] ptlrpc_main+0xb69/0x1870 [ptlrpc] [&lt;ffffffffa0668010&gt;] ? ptlrpc_main+0x0/0x1870 [ptlrpc] [&lt;ffffffff8100c14a&gt;] child_rip+0xa/0x20 [&lt;ffffffffa0668010&gt;] ? ptlrpc_main+0x0/0x1870 [ptlrpc] [&lt;ffffffffa0668010&gt;] ? ptlrpc_main+0x0/0x1870 [ptlrpc] [&lt;ffffffff8100c140&gt;] ? child_rip+0x0/0x20 </pre> </div></div> LU-1640

Test failure on test suite lustre-rsync-test, subtest test_2c

Bug Minor Resolved Duplicate Zhenyu Xu Maloo Tue, 17 Jul 2012 17:39:50 +0000 Thu, 13 Dec 2012 21:55:52 +0000 Thu, 13 Dec 2012 21:55:25 +0000 Lustre 2.3.0 0 6 <p>Bobijam</p> <p>Could you please look into this one?</p> <p>Thanks</p> <p>Peter</p> <p>patch tracking at <a href="http://review.whamcloud.com/3439" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/3439</a></p> <p>obdclass: htable_lookup could miss a waking up signal</p> <p>In lu_object_free(), a wakeing up signal is issued to hash bucket<br/> waiting queue telling blocking thread that a dying object is freed,<br/> but it does not take the bucket lock, without it, there is a chance<br/> that a thread calling htable_lookup() could be add to the bucket<br/> waiting queue missing this waking up signal and waiting forever.</p> <p>As per Bobijam this issue rarely occurs (not seen in the last three tags) and so decreasing in priority to focus on more frequently hit issues</p> <p>Lustre Tag: v2_3_0_RC2<br/> Lustre Build: <a href="http://build.whamcloud.com/job/lustre-b2_3/32" class="external-link" target="_blank" rel="nofollow noopener">http://build.whamcloud.com/job/lustre-b2_3/32</a><br/> Distro/Arch: RHEL6.3/x86_64</p> <p>The same issue occurred again: <a href="https://maloo.whamcloud.com/test_sets/664cd250-12ac-11e2-bd97-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/664cd250-12ac-11e2-bd97-52540035b04c</a></p> <p>discussion move to <a href="https://jira.whamcloud.com/browse/LU-2492" title="MDT thread stuck: mdd_object_find -&gt; lu_object_find_at" class="issue-link" data-issue-key="LU-2492"><del>LU-2492</del></a></p> Duplicate LU-2492 LU-1483 Development Rank 1|hzvgr3: Rank (Obsolete) 6363 Severity