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-2895 Lustre <p>This issue was created by maloo for Li Wei &lt;liwei@whamcloud.com&gt;</p> <p>This issue relates to the following test suite run: <a href="https://maloo.whamcloud.com/test_sets/0c78ac7a-81ad-11e2-9f6b-52540035b04c" class="external-link" target="_blank" rel="nofollow noopener">https://maloo.whamcloud.com/test_sets/0c78ac7a-81ad-11e2-9f6b-52540035b04c</a>.</p> <p>The sub-test test_24a failed with the following error:</p> <blockquote> <p>test failed to respond and timed out</p></blockquote> <p>Info required for matching: recovery-small 24a</p> <p>First, the test failed with return code 1. Second, the MDS hit an assertion failure afterward:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>12:39:11:Lustre: DEBUG MARKER: == recovery-small test 24a: fsync error (should return error) == 12:39:10 (1361997550) 12:39:36:Lustre: lustre-OST0000-osc-MDT0000: slow creates, last=[0x0:0x1:0x0], next=[0x0:0x1:0x0], reserved=0, syn_changes=0, syn_rpc_in_progress=0, status=0 12:39:36:LustreError: 18701:0:(osp_precreate.c:1164:osp_precreate_get_fid()) ASSERTION( lu_fid_diff(&amp;d-&gt;opd_pre_used_fid, &amp;d-&gt;opd_pre_last_created_fid) &lt; 0 ) failed: next fid [0x0:0x1:0x0] last created fid [0x0:0x1:0x0] 12:39:36:LustreError: 18701:0:(osp_precreate.c:1164:osp_precreate_get_fid()) LBUG 12:39:36:Pid: 18701, comm: mdt00_000 12:39:36: 12:39:37:Call Trace: 12:39:37: [&lt;ffffffffa06f1895&gt;] libcfs_debug_dumpstack+0x55/0x80 [libcfs] 12:39:37: [&lt;ffffffffa06f1e97&gt;] lbug_with_loc+0x47/0xb0 [libcfs] 12:39:37: [&lt;ffffffffa0ba4f63&gt;] osp_precreate_get_fid+0x253/0x310 [osp] 12:39:37: [&lt;ffffffffa07022e1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] 12:39:37: [&lt;ffffffffa0ba28cb&gt;] osp_object_assign_fid+0x7b/0x160 [osp] 12:39:37: [&lt;ffffffffa0ba30b6&gt;] osp_object_create+0x406/0x890 [osp] 12:39:38: [&lt;ffffffffa07022e1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] 12:39:38: [&lt;ffffffffa0b5e683&gt;] lod_striping_create+0x193/0x320 [lod] 12:39:38: [&lt;ffffffffa0b5e983&gt;] lod_object_create+0x173/0x260 [lod] 12:39:38: [&lt;ffffffffa0a1a580&gt;] mdd_object_create_internal+0xe0/0x220 [mdd] 12:39:38: [&lt;ffffffffa0a2d22c&gt;] mdd_create+0x77c/0x11f0 [mdd] 12:39:38: [&lt;ffffffffa07022e1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] 12:39:38: [&lt;ffffffffa0ac0ef9&gt;] mdt_reint_open+0x12b9/0x1ab0 [mdt] 12:39:39: [&lt;ffffffffa07022e1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] 12:39:39: [&lt;ffffffffa0aab7f1&gt;] mdt_reint_rec+0x41/0xe0 [mdt] 12:39:39: [&lt;ffffffffa0aa4e53&gt;] mdt_reint_internal+0x4e3/0x7d0 [mdt] 12:39:39: [&lt;ffffffffa0aa540d&gt;] mdt_intent_reint+0x1ed/0x4f0 [mdt] 12:39:39: [&lt;ffffffffa0aa0fde&gt;] mdt_intent_policy+0x3ae/0x750 [mdt] 12:39:39: [&lt;ffffffffa0fb0351&gt;] ldlm_lock_enqueue+0x361/0x8d0 [ptlrpc] 12:39:39: [&lt;ffffffffa0fd6447&gt;] ldlm_handle_enqueue0+0x4f7/0x1080 [ptlrpc] 12:39:39: [&lt;ffffffffa0aa14b6&gt;] mdt_enqueue+0x46/0x110 [mdt] 12:39:39: [&lt;ffffffffa0a96078&gt;] mdt_handle_common+0x628/0x1620 [mdt] 12:39:39: [&lt;ffffffffa0acd845&gt;] mds_regular_handle+0x15/0x20 [mdt] 12:39:39: [&lt;ffffffffa100802c&gt;] ptlrpc_server_handle_request+0x41c/0xdf0 [ptlrpc] 12:39:39: [&lt;ffffffffa06f25de&gt;] ? cfs_timer_arm+0xe/0x10 [libcfs] 12:39:39: [&lt;ffffffffa0fff759&gt;] ? ptlrpc_wait_event+0xa9/0x290 [ptlrpc] 12:39:39: [&lt;ffffffff8105fa40&gt;] ? default_wake_function+0x0/0x20 12:39:39: [&lt;ffffffffa1009576&gt;] ptlrpc_main+0xb76/0x1870 [ptlrpc] 12:39:39: [&lt;ffffffffa1008a00&gt;] ? ptlrpc_main+0x0/0x1870 [ptlrpc] 12:39:39: [&lt;ffffffff8100c0ca&gt;] child_rip+0xa/0x20 12:39:39: [&lt;ffffffffa1008a00&gt;] ? ptlrpc_main+0x0/0x1870 [ptlrpc] 12:39:40: [&lt;ffffffffa1008a00&gt;] ? ptlrpc_main+0x0/0x1870 [ptlrpc] 12:39:40: [&lt;ffffffff8100c0c0&gt;] ? child_rip+0x0/0x20 12:39:40: 12:39:40:Kernel panic - not syncing: LBUG </pre> </div></div> LU-2895

recovery-small 24a: osp_precreate_get_fid(): ASSERTION( lu_fid_diff(&d->opd_pre_used_fid, &d->opd_pre_last_created_fid) < 0 ) failed: next fid [0x0:0x1:0x0] last created fid [0x0:0x1:0x0]

Bug Blocker Resolved Fixed Niu Yawei Maloo LB Fri, 1 Mar 2013 08:08:15 +0000 Mon, 25 Mar 2013 20:12:33 +0000 Mon, 25 Mar 2013 20:12:33 +0000 Lustre 2.4.0 Lustre 2.4.0 0 4 <p>Niu</p> <p>Could you please look into this one?</p> <p>Thanks</p> <p>Peter</p> <p>Looks the osp_precreate_reserve() should timedout:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">12:39:36:Lustre: lustre-OST0000-osc-MDT0000: slow creates, last=[0x0:0x1:0x0], next=[0x0:0x1:0x0], reserved=0, syn_changes=0, syn_rpc_in_progress=0, status=0 </pre> </div></div> <p>but the osp_precreate_reserve() didn't return proper error for such case:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> <span class="code-keyword">if</span> (cfs_time_aftereq(cfs_time_current(), expire)) <span class="code-keyword">break</span>; </pre> </div></div> <p>The mds debug log is missed, so I'm not sure the exact reason of precreation isn't done (even the seq hasn't been initialized), but at least, we should return proper error in such case.</p> <p>fix the LASSERT problem: <a href="http://review.whamcloud.com/5683" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/5683</a></p> <p>why rc taken from is not enough ?</p> <p>Alex, the opd_pre_status was intialized as -EAGAIN, and it could be cleared to 0 in osp_precreate_thread() -&gt; osp_statfs_update(), and the following osp_precreate_cleanup_orphans() wasn't success somehow, then we'll end up in above state: uninitialized opd_pre_last_created_fid &amp; opd_pre_used_fid, opd_pre_status == 0, and osp_precreate_reserve() is possbile timedout with rc == 0.</p> <p>inability to setup FLD client or cleanup orphans should block any activity on this OSP, I'd think.</p> <p>Landed for 2.4</p> Development Rank 1|hzvk3b: Rank (Obsolete) 6979 Severity