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-14433 Lustre <p>After adding fallocate call to racer the following crash is observed very often:</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java"> [ 156.954031] LustreError: 4652:0:(osc_cache.c:1141:osc_extent_make_ready()) ASSERTION( last_oap_count &gt; 0 ) failed: last_oap_count 0 [ 156.956535] LustreError: 4652:0:(osc_cache.c:1141:osc_extent_make_ready()) LBUG [ 156.957881] Pid: 4652, comm: ldlm_bl_01 3.10.0-7.9-debug #1 SMP Mon Feb 1 17:33:41 EST 2021 [ 156.959725] Call Trace: [ 156.960375] [&lt;ffffffffa017873c&gt;] libcfs_call_trace+0x8c/0xc0 [libcfs] [ 156.962003] [&lt;ffffffffa0178a5c&gt;] lbug_with_loc+0x4c/0xa0 [libcfs] [ 156.963391] [&lt;ffffffffa0839b26&gt;] osc_extent_make_ready+0xb66/0xe60 [osc] [ 156.965016] [&lt;ffffffffa083c383&gt;] osc_io_unplug0+0xee3/0x1900 [osc] [ 156.966261] [&lt;ffffffffa0840a60&gt;] osc_cache_writeback_range+0x9a0/0xfd0 [osc] [ 156.968027] [&lt;ffffffffa082b985&gt;] osc_lock_flush+0x195/0x290 [osc] [ 156.969414] [&lt;ffffffffa082be58&gt;] osc_ldlm_blocking_ast+0x2f8/0x3e0 [osc] [ 156.970970] [&lt;ffffffffa05bbe54&gt;] ldlm_cancel_callback+0x84/0x320 [ptlrpc] [ 156.972552] [&lt;ffffffffa05d4011&gt;] ldlm_cli_cancel_local+0xd1/0x420 [ptlrpc] [ 156.974515] [&lt;ffffffffa05da24c&gt;] ldlm_cli_cancel+0x10c/0x560 [ptlrpc] [ 156.976004] [&lt;ffffffffa082bcda&gt;] osc_ldlm_blocking_ast+0x17a/0x3e0 [osc] [ 156.977297] [&lt;ffffffffa05e6435&gt;] ldlm_handle_bl_callback+0xc5/0x3e0 [ptlrpc] [ 156.978932] [&lt;ffffffffa05e6d0f&gt;] ldlm_bl_thread_main+0x5bf/0xae0 [ptlrpc] [ 156.980417] [&lt;ffffffff810ba124&gt;] kthread+0xe4/0xf0 [ 156.981842] [&lt;ffffffff817eee5d&gt;] ret_from_fork_nospec_begin+0x7/0x21 [ 156.983639] [&lt;ffffffffffffffff&gt;] 0xffffffffffffffff [ 156.984738] Kernel panic - not syncing: LBUG </pre> </div></div> <p>This is result of wrong assumption about fallocate range over file range. It is done too early in <tt>ll_fallocate()</tt> so pending write/truncate may change file size and fallocate could change file size wrongly</p> LU-14433

fallocate: osc_extent_make_ready()) ASSERTION( last_oap_count > 0 ) failed

Bug Major Resolved Fixed Mikhail Pershin Mikhail Pershin Mon, 15 Feb 2021 12:22:14 +0000 Thu, 16 Jun 2022 20:55:47 +0000 Wed, 21 Apr 2021 04:01:32 +0000 Lustre 2.15.0 0 3 <p>Mike Pershin (mpershin@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/41668" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/41668</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14433" title="fallocate: osc_extent_make_ready()) ASSERTION( last_oap_count &gt; 0 ) failed" class="issue-link" data-issue-key="LU-14433"><del>LU-14433</del></a> llite: do fallocate() size checks under lock<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 9ad2c55f863755452e74a3e72a10886c6a978bcf</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/41668/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/41668/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14433" title="fallocate: osc_extent_make_ready()) ASSERTION( last_oap_count &gt; 0 ) failed" class="issue-link" data-issue-key="LU-14433"><del>LU-14433</del></a> llite: do fallocate() size checks under lock<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: f23ac22c4c79750fed6b05ddbe460bfc9b0f0ea5</p> <p>Landed for 2.15</p> Related LU-14287 Development Rank 1|i01mnr: Rank (Obsolete) 9223372036854775807 Severity