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-15139 Lustre <p>This issue was created by maloo for Andreas Dilger &lt;adilger@whamcloud.com&gt;</p> <p>This issue relates to the following test suite run: <a href="https://testing.whamcloud.com/test_sets/a9a49ddc-ce2e-4d36-a040-a2522bc7bfaa" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/a9a49ddc-ce2e-4d36-a040-a2522bc7bfaa</a></p> <p>test_160h failed with the following error:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[ 7154.952072] LustreError: 27898:0:(dt_object.c:503:dt_record_write()) ASSERTION( dt-&gt;do_body_ops-&gt;dbo_write ) failed: [ 7154.954429] LustreError: 27898:0:(dt_object.c:503:dt_record_write()) LBUG [ 7154.955686] Pid: 27898, comm: mdt_out00_000 3.10.0-1160.15.2.el7_lustre.ddn12.x86_64 #1 SMP Tue Feb 23 18:25:44 UTC 2021 [ 7154.957907] Call Trace: [ 7154.958488] [&lt;ffffffffc08197cc&gt;] libcfs_call_trace+0x8c/0xc0 [libcfs] [ 7154.960155] [&lt;ffffffffc081987c&gt;] lbug_with_loc+0x4c/0xa0 [libcfs] [ 7154.961662] [&lt;ffffffffc0a50272&gt;] dt_record_write+0xb2/0x120 [obdclass] [ 7154.963451] [&lt;ffffffffc0da7b69&gt;] out_tx_write_exec+0x169/0x2f0 [ptlrpc] [ 7154.965451] [&lt;ffffffffc0d9ff51&gt;] out_tx_end+0xe1/0x5c0 [ptlrpc] [ 7154.967053] [&lt;ffffffffc0da4172&gt;] out_handle+0x1452/0x1bc0 [ptlrpc] [ 7154.968687] [&lt;ffffffffc0d98a3e&gt;] tgt_request_handle+0xaee/0x15f0 [ptlrpc] [ 7154.970322] [&lt;ffffffffc0d3f40b&gt;] ptlrpc_server_handle_request+0x24b/0xab0 [ptlrpc] [ 7154.972268] [&lt;ffffffffc0d42d74&gt;] ptlrpc_main+0xb34/0x1470 [ptlrpc] </pre> </div></div> <p>Another test had a slightly different crash that is also new that may be related:<br/> <a href="https://testing.whamcloud.com/test_sets/d3ede9b0-ecaa-484e-8840-891e62bdb314" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/d3ede9b0-ecaa-484e-8840-891e62bdb314</a></p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[86376.168111] LustreError: 31898:0:(mdt_handler.c:5316:mdt_fini()) ASSERTION( atomic_read(&amp;d-&gt;ld_ref) == 0 ) failed: [86376.169205] LustreError: 31898:0:(mdt_handler.c:5316:mdt_fini()) LBUG [86376.169811] Pid: 31898, comm: umount 3.10.0-1160.15.2.el7_lustre.ddn12.x86_64 #1 SMP Tue Feb 23 03:03:21 UTC 2021 [86376.170763] Call Trace: [86376.171066] [&lt;ffffffffc0bed7cc&gt;] libcfs_call_trace+0x8c/0xc0 [libcfs] [86376.171857] [&lt;ffffffffc0bed87c&gt;] lbug_with_loc+0x4c/0xa0 [libcfs] [86376.172537] [&lt;ffffffffc148b5ea&gt;] mdt_device_fini+0x8fa/0x930 [mdt] [86376.173227] [&lt;ffffffffc0e0ea68&gt;] class_cleanup+0x9a8/0xc40 [obdclass] [86376.174052] [&lt;ffffffffc0e0f98c&gt;] class_process_config+0x65c/0x2830 [obdclass] [86376.174793] [&lt;ffffffffc0e11d26&gt;] class_manual_cleanup+0x1c6/0x710 [obdclass] [86376.175574] [&lt;ffffffffc0e446a5&gt;] server_put_super+0xa35/0x1150 [obdclass] [86376.176295] [&lt;ffffffff8c4506fd&gt;] generic_shutdown_super+0x6d/0x100 [86376.177103] [&lt;ffffffff8c450b02&gt;] kill_anon_super+0x12/0x20 [86376.177684] [&lt;ffffffffc0e14932&gt;] lustre_kill_super+0x32/0x50 [obdclass] [86376.178360] [&lt;ffffffff8c450ede&gt;] deactivate_locked_super+0x4e/0x70 [86376.179043] [&lt;ffffffff8c451666&gt;] deactivate_super+0x46/0x60 [86376.179630] [&lt;ffffffff8c470cff&gt;] cleanup_mnt+0x3f/0x80 [86376.180163] [&lt;ffffffff8c470d92&gt;] __cleanup_mnt+0x12/0x20 [86376.180745] [&lt;ffffffff8c2c294b&gt;] task_work_run+0xbb/0xe0 [86376.181296] [&lt;ffffffff8c22cc65&gt;] do_notify_resume+0xa5/0xc0 </pre> </div></div> <p>VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV<br/> sanity test_160h - onyx-44vm4 crashed during sanity test_160h</p> LU-15139

sanity test_160h: dt_record_write() ASSERTION( dt->do_body_ops->dbo_write ) failed

Bug Minor Resolved Fixed Alex Zhuravlev Maloo Fri, 26 Feb 2021 19:59:44 +0000 Tue, 7 Nov 2023 07:16:53 +0000 Wed, 2 Nov 2022 13:28:07 +0000 Lustre 2.14.0 Lustre 2.15.0 Lustre 2.16.0 0 11 <p>It is possible that these failures relate to <a href="https://jira.whamcloud.com/browse/LU-14341" title="hard LOCKUP lustre servers with kernel-3.10.0-1160.11.1" class="issue-link" data-issue-key="LU-14341"><del>LU-14341</del></a> since we are now testing on 3.10.0-1160.15.2.el7 kernels, and that problem started with 3.10.0-1160.8.1.el7 kernels.</p> <p>+1 on master:<br/> <a href="https://testing.whamcloud.com/test_sets/0804055c-4eea-45f5-a43c-66079e3f3436" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/0804055c-4eea-45f5-a43c-66079e3f3436</a></p> <p>+1 on master: <a href="https://testing.whamcloud.com/test_sets/9c12f7a3-252e-48ae-aa7f-804bbd117895" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/9c12f7a3-252e-48ae-aa7f-804bbd117895</a></p> <p>I can reproduce the same assertion with recovery-small/149, very rarely, collecting data, but IMO this has a different cause. anyway, this is on my radar.</p> <p>+12 crashes in recovery-small test_149 in the past 4 weeks with the <tt>out_tx_write_exec</tt> stack, but only 2 in the past few days, the rest are over 2 weeks ago.</p> <p>yes, I also hit this locally few times a week, adding more and more debug ...</p> <p>I was able to reproduce this and have log. and the log is confusing:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> 00000004:00000010:0.0:1649084555.961084:0:6155:0:(mdt_handler.c:6301:mdt_object_alloc()) slab-alloced <span class="code-quote">'mo'</span>: 912 at 00000000092425e9. 00000004:00000040:0.0:1649084555.961088:0:6155:0:(mdt_handler.c:6338:mdt_object_init()) object init, fid = [0x240001b70:0x1:0x0] 00000004:00000010:0.0:1649084555.961095:0:6155:0:(lod_dev.c:214:lod_object_alloc()) slab-alloced <span class="code-quote">'lod_obj'</span>: 280 at 0000000012d03b04. 00080000:00000010:0.0:1649084555.961107:0:6155:0:(osd_handler.c:420:osd_object_alloc()) kmalloced <span class="code-quote">'(mo)'</span>: 544 at 000000000ab89345. 00000004:00000040:0.0:1649084555.961102:0:6155:0:(lod_dev.c:169:lod_fld_lookup()) lustre-MDT0001-mdtlov: got tgt 1 <span class="code-keyword">for</span> sequence: 0x240001b70 00000020:00000002:0.0:1649084555.962456:0:6155:0:(lu_object.c:224:lu_object_put()) Add 000000000ab89345/00000000092425e9 to site lru. bkt: 00000000cf2c67a7 00000004:00000001:0.0:1649084555.973169:0:6155:0:(mdt_handler.c:6299:mdt_object_alloc()) <span class="code-object">Process</span> entered 00000004:00000010:0.0:1649084555.973174:0:6155:0:(mdt_handler.c:6301:mdt_object_alloc()) slab-alloced <span class="code-quote">'mo'</span>: 912 at 000000000b6883b5. 00000004:00000040:0.0:1649084555.973177:0:6155:0:(mdt_handler.c:6338:mdt_object_init()) object init, fid = [0x240001b70:0x1:0x0] 00000004:00000010:0.0:1649084555.973179:0:6155:0:(mdd_object.c:277:mdd_object_alloc()) slab-alloced <span class="code-quote">'mdd_obj'</span>: 96 at 00000000a2579935. 00000004:00000040:0.0:1649084555.973194:0:6155:0:(lod_dev.c:169:lod_fld_lookup()) lustre-MDT0001-mdtlov: got tgt 1 <span class="code-keyword">for</span> sequence: 0x240001b70 00000004:00000001:0.0:1649084555.973195:0:6155:0:(lod_dev.c:171:lod_fld_lookup()) <span class="code-object">Process</span> leaving (rc=0 : 0 : 0) 00080000:00000010:0.0:1649084555.973200:0:6155:0:(osd_handler.c:420:osd_object_alloc()) kmalloced <span class="code-quote">'(mo)'</span>: 544 at 00000000b65f9684. </pre> </div></div> <p>"Alex Zhuravlev &lt;bzzz@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/47003" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/47003</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15139" title="sanity test_160h: dt_record_write() ASSERTION( dt-&gt;do_body_ops-&gt;dbo_write ) failed" class="issue-link" data-issue-key="LU-15139"><del>LU-15139</del></a> osp: block reads until writes are done<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: a09bc918bf4c18a4ff1c948237da5d5b3d391078</p> <p>the patch above survived ~30 hours. w/o the patch it usually takes few hours to hit the assertion.<br/> one of the early version confirmat that it's possible to hit reads during write-in-flight in OSP - basically at recovery time MDS's thread cleaning orphans from PENDING/ race with the recovery thread fetching updates from the remote llogs.</p> <p>+1 on master in recovery-small test_149: <a href="https://testing.whamcloud.com/test_sets/68f3e91b-d748-4a92-89d1-babf4dcd7fb3" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/68f3e91b-d748-4a92-89d1-babf4dcd7fb3</a></p> <p>+1 on master: <a href="https://testing.whamcloud.com/test_sets/88d891a9-d784-432b-a414-ef82751ac528" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/88d891a9-d784-432b-a414-ef82751ac528</a><br/> I have decoded the vmcore:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[ 7977.738850] LustreError: 14410:0:(dt_object.c:502:dt_record_write()) ASSERTION( dt-&gt;do_body_ops-&gt;dbo_write ) failed: [ 7977.740884] LustreError: 14410:0:(dt_object.c:502:dt_record_write()) LBUG [ 7977.742136] Pid: 14410, comm: mdt_out00_003 4.18.0-348.2.1.el8_lustre.x86_64 #1 SMP Fri May 6 20:34:00 UTC 2022 [ 7977.743950] Call Trace TBD: [ 7977.744707] [&lt;0&gt;] libcfs_call_trace+0x6f/0x90 [libcfs] [ 7977.745679] [&lt;0&gt;] lbug_with_loc+0x43/0x80 [libcfs] [ 7977.746842] [&lt;0&gt;] dt_record_write+0x10a/0x110 [obdclass] [ 7977.748285] [&lt;0&gt;] out_tx_write_exec+0x92/0x380 [ptlrpc] [ 7977.749324] [&lt;0&gt;] out_tx_end+0x166/0x5f0 [ptlrpc] [ 7977.750300] [&lt;0&gt;] out_handle+0x17ef/0x2180 [ptlrpc] [ 7977.751308] [&lt;0&gt;] tgt_request_handle+0xc93/0x1a40 [ptlrpc] [ 7977.752407] [&lt;0&gt;] ptlrpc_server_handle_request+0x323/0xbd0 [ptlrpc] [ 7977.753643] [&lt;0&gt;] ptlrpc_main+0xc06/0x1560 [ptlrpc] [ 7977.754607] [&lt;0&gt;] kthread+0x116/0x130 [ 7977.755345] [&lt;0&gt;] ret_from_fork+0x35/0x40 [ 7977.756132] Kernel panic - not syncing: LBUG </pre> </div></div> <p>The osd_object:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>struct osd_object { oo_dt = { do_lu = { lo_header = 0xffff96c0fb0a2930, lo_dev = 0xffff96c0f1f40000, lo_ops = 0xffffffffc116a440 &lt;__func__.70851&gt;, lo_linkage = { next = 0xffff96c0fb0a2968, prev = 0xffff96c0e6c87a30 }, lo_dev_ref = {&lt;No data fields&gt;} }, do_ops = 0xffffffffc116a320 &lt;__func__.71148+16&gt;, do_body_ops = 0xffffffffc116b760 &lt;__flags.79514&gt;, do_index_ops = 0x0 }, oo_inode = 0x0, oo_hl_head = 0x0, oo_ext_idx_sem = { count = { counter = 256 }, crash&gt; sym 0xffffffffc116b760 ffffffffc116b760 (r) osd_body_ops_new [osd_ldiskfs] crash&gt; </pre> </div></div> <p>The oo_inode was NULL, since osd_fid_lookup return from:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> 00000004:00000001:0.0:1653480139.386555:0:14410:0:(mdt_handler.c:6335:mdt_object_init()) Process entered 00000004:00000040:0.0:1653480139.386555:0:14410:0:(mdt_handler.c:6338:mdt_object_init()) object init, fid = [0x240001b70:0x1:0x0] 00000004:00000010:0.0:1653480139.386557:0:14410:0:(mdd_object.c:277:mdd_object_alloc()) slab-alloced 'mdd_obj': 96 at 00000000b01970bb. 00000004:00000001:0.0:1653480139.386558:0:14410:0:(mdt_handler.c:6347:mdt_object_init()) Process leaving (rc=0 : 0 : 0) 00000004:00000001:0.0:1653480139.386558:0:14410:0:(mdd_object.c:299:mdd_object_init()) Process entered 00000004:00000001:0.0:1653480139.386559:0:14410:0:(lod_dev.c:212:lod_object_alloc()) Process entered 00000004:00000010:0.0:1653480139.386560:0:14410:0:(lod_dev.c:214:lod_object_alloc()) slab-alloced 'lod_obj': 152 at 0000000059b054cd. 00000004:00000001:0.0:1653480139.386560:0:14410:0:(lod_dev.c:224:lod_object_alloc()) Process leaving (rc=18446628353982626328 : -115719726925288 : ffff96c0e6c87a18) 00000004:00000001:0.0:1653480139.386561:0:14410:0:(mdd_object.c:309:mdd_object_init()) Process leaving (rc=0 : 0 : 0) 00000004:00000001:0.0:1653480139.386562:0:14410:0:(lod_object.c:9014:lod_object_init()) Process entered 00000004:00000001:0.0:1653480139.386563:0:14410:0:(lod_dev.c:128:lod_fld_lookup()) Process entered 80000000:00000001:0.0:1653480139.386563:0:14410:0:(fld_handler.c:247:fld_server_lookup()) Process entered 80000000:00000001:0.0:1653480139.386564:0:14410:0:(fld_handler.c:211:fld_local_lookup()) Process entered 80000000:00000001:0.0:1653480139.386565:0:14410:0:(fld_cache.c:468:fld_cache_lookup()) Process entered 80000000:00000001:0.0:1653480139.386565:0:14410:0:(fld_cache.c:487:fld_cache_lookup()) Process leaving (rc=0 : 0 : 0) 80000000:00000001:0.0:1653480139.386566:0:14410:0:(fld_handler.c:228:fld_local_lookup()) Process leaving (rc=0 : 0 : 0) 80000000:00000001:0.0:1653480139.386566:0:14410:0:(fld_handler.c:251:fld_server_lookup()) Process leaving (rc=0 : 0 : 0) 00000004:00000040:0.0:1653480139.386567:0:14410:0:(lod_dev.c:169:lod_fld_lookup()) lustre-MDT0001-mdtlov: got tgt 1 for sequence: 0x240001b70 00000004:00000001:0.0:1653480139.386568:0:14410:0:(lod_dev.c:171:lod_fld_lookup()) Process leaving (rc=0 : 0 : 0) 00080000:00000010:0.0:1653480139.386569:0:14410:0:(osd_handler.c:420:osd_object_alloc()) kmalloced '(mo)': 224 at 00000000b474d102. 00000004:00000001:0.0:1653480139.386570:0:14410:0:(lod_object.c:9057:lod_object_init()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386571:0:14410:0:(osd_handler.c:1126:osd_fid_lookup()) Process entered 00080000:00000001:0.0:1653480139.386571:0:14410:0:(osd_oi.c:576:fid_is_on_ost()) Process entered 80000000:00000001:0.0:1653480139.386572:0:14410:0:(fld_handler.c:211:fld_local_lookup()) Process entered 80000000:00000001:0.0:1653480139.386572:0:14410:0:(fld_cache.c:468:fld_cache_lookup()) Process entered 80000000:00000001:0.0:1653480139.386573:0:14410:0:(fld_cache.c:487:fld_cache_lookup()) Process leaving (rc=0 : 0 : 0) 80000000:00000001:0.0:1653480139.386573:0:14410:0:(fld_handler.c:228:fld_local_lookup()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386574:0:14410:0:(osd_oi.c:615:fid_is_on_ost()) Process leaving (rc=0 : 0 : 0) 80000000:00000001:0.0:1653480139.386572:0:14410:0:(fld_handler.c:211:fld_local_lookup()) Process entered 80000000:00000001:0.0:1653480139.386572:0:14410:0:(fld_cache.c:468:fld_cache_lookup()) Process entered 80000000:00000001:0.0:1653480139.386573:0:14410:0:(fld_cache.c:487:fld_cache_lookup()) Process leaving (rc=0 : 0 : 0) 80000000:00000001:0.0:1653480139.386573:0:14410:0:(fld_handler.c:228:fld_local_lookup()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386574:0:14410:0:(osd_oi.c:615:fid_is_on_ost()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386575:0:14410:0:(osd_oi.c:546:osd_oi_iam_lookup()) Process entered 00000001:00000010:0.0:1653480139.386576:0:14410:0:(osd_dynlocks.c:109:dynlock_lock()) slab-alloced 'nhl': 72 at 0000000006b44178. 00000001:00000010:0.0:1653480139.386580:0:14410:0:(osd_dynlocks.c:193:dynlock_unlock()) slab-freed 'hl': 72 at 0000000006b44178. 00080000:00000001:0.0:1653480139.386582:0:14410:0:(osd_oi.c:568:osd_oi_iam_lookup()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386582:0:14410:0:(osd_oi.c:576:fid_is_on_ost()) Process entered 80000000:00000001:0.0:1653480139.386583:0:14410:0:(fld_handler.c:211:fld_local_lookup()) Process entered 80000000:00000001:0.0:1653480139.386583:0:14410:0:(fld_cache.c:468:fld_cache_lookup()) Process entered 80000000:00000001:0.0:1653480139.386584:0:14410:0:(fld_cache.c:487:fld_cache_lookup()) Process leaving (rc=0 : 0 : 0) 80000000:00000001:0.0:1653480139.386584:0:14410:0:(fld_handler.c:228:fld_local_lookup()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386585:0:14410:0:(osd_oi.c:615:fid_is_on_ost()) Process leaving (rc=0 : 0 : 0) 00080000:00000001:0.0:1653480139.386586:0:14410:0:(osd_handler.c:1186:osd_fid_lookup()) Process leaving via out (rc=0 : 0 : 0x0). &lt;&lt;&lt;&lt;&lt;&lt;&lt;----- 1179 /* Search order: 3. OI files. */ 1180 result = osd_oi_lookup(info, dev, fid, id, OI_CHECK_FLD); 1181 if (result == -ENOENT) { 1182 if (!(fid_is_norm(fid) || fid_is_igif(fid)) || 1183 fid_is_on_ost(info, dev, fid, OI_CHECK_FLD) || 1184 !ldiskfs_test_bit(osd_oi_fid2idx(dev, fid), 1185 sf-&gt;sf_oi_bitmap)) 1186 GOTO(out, result = 0); 1187 1188 goto trigger; </pre> </div></div> <p>Look at the sf_oi_bitmap:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre> os_file = { sf_uuid = { b = "\202%\024\\_EL\322\240\220\060\322\250\244\357k" }, sf_flags = 0x0, sf_magic = 0x4c5fd252, sf_status = 0x0, sf_param = 0x0, sf_time_last_complete = 0x0, sf_time_latest_start = 0x0, sf_time_last_checkpoint = 0x0, sf_pos_latest_start = 0x0, sf_pos_last_checkpoint = 0x0, sf_pos_first_inconsistent = 0x0, sf_items_checked = 0x0, sf_items_updated = 0x0, sf_items_failed = 0x0, sf_items_updated_prior = 0x0, sf_items_noscrub = 0x0, sf_items_igif = 0x0, sf_run_time = 0x0, sf_success_count = 0x0, sf_oi_count = 0x40, sf_internal_flags = 0x1, sf_reserved_1 = 0x0, sf_reserved_2 = {0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0, 0x0}, sf_oi_bitmap = "\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000\000" }, </pre> </div></div> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/47003/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/47003/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15139" title="sanity test_160h: dt_record_write() ASSERTION( dt-&gt;do_body_ops-&gt;dbo_write ) failed" class="issue-link" data-issue-key="LU-15139"><del>LU-15139</del></a> osp: block reads until the object is created<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: 4f2914537cc32fe89c4781bcfc87c38e3fe4419c</p> <p>Landed for 2.16</p> <p>"Etienne AUJAMES &lt;eaujames@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/51558" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/51558</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15139" title="sanity test_160h: dt_record_write() ASSERTION( dt-&gt;do_body_ops-&gt;dbo_write ) failed" class="issue-link" data-issue-key="LU-15139"><del>LU-15139</del></a> osp: block reads until the object is created<br/> Project: fs/lustre-release<br/> Branch: b2_15<br/> Current Patch Set: 1<br/> Commit: 4afaf1249439ea7a27910b0f77a84232c268df61</p> Duplicate LU-15849 Related LU-13195 LU-16398 LU-15809 LU-17255 LU-15769 LU-14932 LU-15695 LU-15938 Development Rank 1|i01nw7: Rank (Obsolete) 9223372036854775807 Severity