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-7066 Lustre <p>Running SWL, clients LBUG. Similar to <a href="https://jira.whamcloud.com/browse/LU-2643" title="osc_cache_writeback_range() ASSERTION( hp == 0 &amp;&amp; discard == 0 )" class="issue-link" data-issue-key="LU-2643"><del>LU-2643</del></a> but newer</p> <div class="code panel" style="border-width: 1px;"><div class="codeContent panelContent"> <pre class="code-java">Aug 31 08:26:19 iwc55 kernel: LustreError: 64274:0:(ldlm_resource.c:1454:ldlm_resource_dump()) ### ### ns: lustre-OST0002-osc-ffff8808427fd400 lock: ffff880687108700/0x22278a710c5f0c16 lrc: 3/0,1 mode: PW/PW res: [0x300000406:0x8dd59:0x0].0 rrc: 12 type: EXT [106954752-&gt;113246207] (req 106954752-&gt;109051903) flags: 0x126400020000 nid: local remote: 0x9307b5d51b4d3df2 expref: -99 pid: 64221 timeout: 0 lvb_type: 1 Aug 31 08:26:19 iwc55 kernel: Lustre: lustre-OST0002-osc-ffff8808427fd400: Connection restored to lustre-OST0002 (at 192.168.120.15@o2ib) Aug 31 08:26:19 iwc55 kernel: LustreError: 39539:0:(osc_cache.c:2944:osc_cache_writeback_range()) ASSERTION( hp == 0 &amp;&amp; discard == 0 ) failed: Aug 31 08:26:19 iwc55 kernel: LustreError: 39539:0:(osc_cache.c:2944:osc_cache_writeback_range()) ASSERTION( hp == 0 &amp;&amp; discard == 0 ) failed: Aug 31 08:26:19 iwc55 kernel: LustreError: 39539:0:(osc_cache.c:2944:osc_cache_writeback_range()) LBUG Aug 31 08:26:19 iwc55 kernel: LustreError: 39539:0:(osc_cache.c:2944:osc_cache_writeback_range()) LBUG Aug 31 08:26:19 iwc55 kernel: Pid: 39539, comm: ldlm_bl_62 Aug 31 08:26:19 iwc55 kernel: Aug 31 08:26:19 iwc55 kernel: Call Trace: Aug 31 08:26:19 iwc55 kernel: [&lt;ffffffffa0474875&gt;] libcfs_debug_dumpstack+0x55/0x80 [libcfs] Aug 31 08:26:19 iwc55 kernel: [&lt;ffffffffa0474e77&gt;] lbug_with_loc+0x47/0xb0 [libcfs] Aug 31 08:26:19 iwc55 kernel: [&lt;ffffffffa0b3eea7&gt;] osc_cache_writeback_range+0x1067/0x1280 [osc] Aug 31 08:26:19 iwc55 kernel: [&lt;ffffffffa0603fe9&gt;] ? cl_env_hops_keycmp+0x19/0x70 [obdclass] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa0b27c05&gt;] osc_lock_flush+0x175/0x260 [osc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa0b27f98&gt;] osc_ldlm_blocking_ast+0x2a8/0x3c0 [osc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa079a9dc&gt;] ldlm_cancel_callback+0x6c/0x170 [ptlrpc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa07ad84a&gt;] ldlm_cli_cancel_local+0x8a/0x470 [ptlrpc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa07b2480&gt;] ldlm_cli_cancel+0x60/0x360 [ptlrpc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa0b27dcb&gt;] osc_ldlm_blocking_ast+0xdb/0x3c0 [osc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa0480bf1&gt;] ? libcfs_debug_msg+0x41/0x50 [libcfs] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa07b6380&gt;] ldlm_handle_bl_callback+0x130/0x400 [ptlrpc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa07b6e64&gt;] ldlm_bl_thread_main+0x484/0x700 [ptlrpc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffff81064c00&gt;] ? default_wake_function+0x0/0x20 Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffffa07b69e0&gt;] ? ldlm_bl_thread_main+0x0/0x700 [ptlrpc] Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffff8109e78e&gt;] kthread+0x9e/0xc0 Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffff8100c28a&gt;] child_rip+0xa/0x20 Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffff8109e6f0&gt;] ? kthread+0x0/0xc0 Aug 31 08:26:20 iwc55 kernel: [&lt;ffffffff8100c280&gt;] ? child_rip+0x0/0x20 </pre> </div></div> Hyperion/ SWL test LU-7066

osc_cache.c:2944:osc_cache_writeback_range()) ASSERTION( hp == 0 && discard == 0 ) failed

Bug Blocker Resolved Duplicate WC Triage Cliff White Mon, 31 Aug 2015 19:29:33 +0000 Tue, 6 Sep 2016 01:58:26 +0000 Tue, 1 Sep 2015 17:53:26 +0000 Lustre 2.8.0 0 3 <p>this is probably the same issue of <a href="https://jira.whamcloud.com/browse/LU-6271" title="(osc_cache.c:3150:discard_cb()) ASSERTION( (!(page-&gt;cp_type == CPT_CACHEABLE) || (!PageDirty(cl_page_vmpage(page)))) ) failed:" class="issue-link" data-issue-key="LU-6271"><del>LU-6271</del></a>. One question raises why we can see so many eviction cases recently.</p> <p>We hit the problem recently even the branch already has <a href="https://jira.whamcloud.com/browse/LU-6271" title="(osc_cache.c:3150:discard_cb()) ASSERTION( (!(page-&gt;cp_type == CPT_CACHEABLE) || (!PageDirty(cl_page_vmpage(page)))) ) failed:" class="issue-link" data-issue-key="LU-6271"><del>LU-6271</del></a> patches.</p> <p>I noticed that osc_lock_flush() always call osc_cache_writeback_range() with hp=1. That means, the assertion of LASSERT(hp == 0 &amp;&amp; discard == 0) always fails if the extent is OES_ACTIVE. Is this expected behavior?</p> <p>it's expected that the extent's state can't be OES_ACTIVE when the lock is being canceled.</p> Duplicate LU-6271 Development Rank 1|hzxlun: Rank (Obsolete) 9223372036854775807 Severity