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-15660 Lustre <p>This issue was created by maloo for Yang Sheng &lt;ys@whamcloud.com&gt;</p> <p>This issue relates to the following test suite run: <a href="https://testing.whamcloud.com/test_sets/c082c323-0510-49bd-98f5-bcd04c073100" class="external-link" target="_blank" rel="nofollow noopener">https://testing.whamcloud.com/test_sets/c082c323-0510-49bd-98f5-bcd04c073100</a></p> <p>test_racer_on_nfs failed with the following error:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>............ [Tue Mar 15 01:19:39 2022] umount D 0 55980 55979 0x00004080 [Tue Mar 15 01:19:39 2022] Call Trace: [Tue Mar 15 01:19:39 2022] __schedule+0x2c4/0x700 [Tue Mar 15 01:19:39 2022] schedule+0x38/0xa0 [Tue Mar 15 01:19:39 2022] schedule_timeout+0x193/0x2f0 [Tue Mar 15 01:19:39 2022] ? __next_timer_interrupt+0xf0/0xf0 [Tue Mar 15 01:19:39 2022] ll_kill_super+0x63/0x130 [lustre] [Tue Mar 15 01:19:39 2022] lustre_kill_super+0x28/0x40 [lustre] [Tue Mar 15 01:19:39 2022] deactivate_locked_super+0x34/0x70 [Tue Mar 15 01:19:39 2022] cleanup_mnt+0x3b/0x70 [Tue Mar 15 01:19:39 2022] task_work_run+0x8a/0xb0 [Tue Mar 15 01:19:39 2022] exit_to_usermode_loop+0xeb/0xf0 [Tue Mar 15 01:19:39 2022] do_syscall_64+0x198/0x1a0 [Tue Mar 15 01:19:39 2022] entry_SYSCALL_64_after_hwframe+0x65/0xca [Tue Mar 15 01:19:39 2022] RIP: 0033:0x7fd680bf7f5b [Tue Mar 15 01:19:39 2022] Code: Bad RIP value. [Tue Mar 15 01:19:39 2022] RSP: 002b:00007ffd07bf7bd8 EFLAGS: 00000202 ORIG_RAX: 00000000000000a6 [Tue Mar 15 01:19:39 2022] RAX: 0000000000000000 RBX: 000055711ddf1400 RCX: 00007fd680bf7f5b [Tue Mar 15 01:19:39 2022] RDX: 0000000000000001 RSI: 0000000000000001 RDI: 000055711de013d0 [Tue Mar 15 01:19:39 2022] RBP: 0000000000000001 R08: 000055711de00ce0 R09: 000055711ddee010 [Tue Mar 15 01:19:39 2022] R10: 00007fd680eb8ba0 R11: 0000000000000202 R12: 000055711de013d0 [Tue Mar 15 01:19:39 2022] R13: 00007fd6819a3184 R14: 000055711ddff020 R15: 00000000ffffffff ............ [Tue Mar 15 01:19:39 2022] ll_sa_31092 I 0 40130 2 0x80004080 [Tue Mar 15 01:19:39 2022] Call Trace: [Tue Mar 15 01:19:39 2022] __schedule+0x2c4/0x700 [Tue Mar 15 01:19:39 2022] schedule+0x38/0xa0 [Tue Mar 15 01:19:39 2022] ll_statahead_thread+0x32c/0xc60 [lustre] [Tue Mar 15 01:19:39 2022] ? start_statahead_thread+0x12f0/0x12f0 [lustre] [Tue Mar 15 01:19:39 2022] kthread+0x112/0x130 [Tue Mar 15 01:19:39 2022] ? kthread_flush_work_fn+0x10/0x10 [Tue Mar 15 01:19:39 2022] ret_from_fork+0x35/0x40 [Tue Mar 15 01:19:39 2022] ll_agl_31092 I 0 40131 2 0x80004080 [Tue Mar 15 01:19:39 2022] Call Trace: [Tue Mar 15 01:19:39 2022] __schedule+0x2c4/0x700 [Tue Mar 15 01:19:39 2022] ? ll_agl_trigger+0x4a0/0x4a0 [lustre] [Tue Mar 15 01:19:39 2022] schedule+0x38/0xa0 [Tue Mar 15 01:19:39 2022] ll_agl_thread+0xf2/0x210 [lustre] [Tue Mar 15 01:19:39 2022] kthread+0x112/0x130 [Tue Mar 15 01:19:39 2022] ? kthread_flush_work_fn+0x10/0x10 [Tue Mar 15 01:19:39 2022] ret_from_fork+0x35/0x40 ............... </pre> </div></div> <p>The umount was blocked by statahead thread. </p> <p>VVVVVVV DO NOT REMOVE LINES BELOW, Added by Maloo for auto-association VVVVVVV<br/> parallel-scale-nfsv4 test_racer_on_nfs - </p> LU-15660

parallel-scale-nfsv4 test_racer_on_nfs: statahead doesn't stop

Bug Minor Resolved Fixed Yang Sheng Maloo Fri, 18 Mar 2022 09:29:17 +0000 Thu, 19 Oct 2023 15:26:15 +0000 Tue, 4 Apr 2023 16:31:13 +0000 Lustre 2.16.0 Lustre 2.15.4 0 8 <p>The location for statahead:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>(gdb) l *(ll_statahead_thread+0x32c) 0x65a6c is in ll_statahead_thread (/root/git/rw/lustre/llite/statahead.c:169). 164 * (2) consecutive miss more than 8 165 * then means low hit. 166 */ 167 static inline int sa_low_hit(struct ll_statahead_info *sai) 168 { 169 return ((sai-&gt;sai_hit &gt; 7 &amp;&amp; sai-&gt;sai_hit &lt; 4 * sai-&gt;sai_miss) || 170 (sai-&gt;sai_consecutive_miss &gt; 8)); 171 } 172 ....... 1079 break; 1080 } 1081 1082 dp = page_address(page); 1083 for (ent = lu_dirent_start(dp); 1084 ent != NULL &amp;&amp; sai-&gt;sai_task &amp;&amp; 1085 !sa_low_hit(sai); 1086 ent = lu_dirent_next(ent)) { 1087 __u64 hash; 1088 int namelen; </pre> </div></div> <p>"Yang Sheng &lt;ys@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/47673" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/47673</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15660" title="parallel-scale-nfsv4 test_racer_on_nfs: statahead doesn&#39;t stop" class="issue-link" data-issue-key="LU-15660"><del>LU-15660</del></a> statahead: statahead thread doesn't stop<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: e8e006a2311dbf8cefac93529e8f96eeb8a03932</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/47673/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/47673/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15660" title="parallel-scale-nfsv4 test_racer_on_nfs: statahead doesn&#39;t stop" class="issue-link" data-issue-key="LU-15660"><del>LU-15660</del></a> statahead: statahead thread doesn't stop<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: b977caa2dc7dddcec9e20d393ee79dfa9fe31c0d</p> <p>Landed for 2.16</p> <p>"Xing Huang &lt;hxing@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/52300" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/52300</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15660" title="parallel-scale-nfsv4 test_racer_on_nfs: statahead doesn&#39;t stop" class="issue-link" data-issue-key="LU-15660"><del>LU-15660</del></a> statahead: statahead thread doesn't stop<br/> Project: fs/lustre-release<br/> Branch: b2_15<br/> Current Patch Set: 1<br/> Commit: eb1d28ed57a6316452db6c8423360ec12e8c4e31</p> <p>"Oleg Drokin &lt;green@whamcloud.com&gt;" merged in patch <a href="https://review.whamcloud.com/c/fs/lustre-release/+/52300/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/52300/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-15660" title="parallel-scale-nfsv4 test_racer_on_nfs: statahead doesn&#39;t stop" class="issue-link" data-issue-key="LU-15660"><del>LU-15660</del></a> statahead: statahead thread doesn't stop<br/> Project: fs/lustre-release<br/> Branch: b2_15<br/> Current Patch Set: <br/> Commit: f7438d13b2aadbdf8e90e5b0b7732eeb20f3d475</p> Related LU-14883 LU-17092 Development Rank 1|i02l67: Rank (Obsolete) 9223372036854775807 Severity