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-13680 Lustre <p>Large allocations in <tt>osd_bufs_get()</tt> can fail if the OSS memory is fragmented after use, if that thread has not serviced a cacheless IO since startup or is newly started:</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>kernel: ll_ost_io04_052: page allocation failure: order:5, mode:0x10c050 kernel: CPU: 4 PID: 1980 Comm: ll_ost_io04_052 Call Trace: dump_stack+0x19/0x1b warn_alloc_failed+0x110/0x180 __alloc_pages_slowpath+0x6b6/0x724 __alloc_pages_nodemask+0x404/0x420 alloc_pages_current+0x98/0x110 __get_free_pages+0xe/0x40 kmalloc_order_trace+0x2e/0xa0 osd_bufs_get+0x7b7/0x870 [osd_ldiskfs] ofd_preprw_read+0x2ea/0x1110 [ofd] ofd_preprw+0x499/0x8c0 [ofd] tgt_brw_read+0x9e3/0x1e40 [ptlrpc] tgt_request_handle+0xada/0x1570 [ptlrpc] ptlrpc_server_handle_request+0x24b/0xab0 [ptlrpc] ptlrpc_main+0xb34/0x1470 [ptlrpc] </pre> </div></div> <p>The order 5 allocation is 128KB, so <tt>osd_bufs_get()</tt> should be using <tt>OBD_ALLOC_LARGE()</tt> or equivalent.</p> LU-13680

large allocations in osd_bufs_get() failing

Bug Minor Resolved Fixed Andreas Dilger Andreas Dilger Mon, 15 Jun 2020 19:43:39 +0000 Thu, 30 Nov 2023 16:01:29 +0000 Sat, 4 Jul 2020 14:04:56 +0000 Lustre 2.14.0 0 5 <p>Andreas Dilger (adilger@whamcloud.com) uploaded a new patch: <a href="https://review.whamcloud.com/38943" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/38943</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13680" title="large allocations in osd_bufs_get() failing" class="issue-link" data-issue-key="LU-13680"><del>LU-13680</del></a> osd-ldiskfs: handle large allocations<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 5cab7541253e2f83bba1e6725f97708bfc1679eb</p> <p>Oleg Drokin (green@whamcloud.com) merged in patch <a href="https://review.whamcloud.com/38943/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/38943/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13680" title="large allocations in osd_bufs_get() failing" class="issue-link" data-issue-key="LU-13680"><del>LU-13680</del></a> osd-ldiskfs: handle large allocations<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: <br/> Commit: bbb14d40a4be6a9172b80ed3208f81be2f1d1b66</p> <p>Landed for 2.14</p> <p>"Etienne AUJAMES &lt;eaujames@ddn.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/c/fs/lustre-release/+/49478" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/c/fs/lustre-release/+/49478</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-13680" title="large allocations in osd_bufs_get() failing" class="issue-link" data-issue-key="LU-13680"><del>LU-13680</del></a> osd-ldiskfs: handle large allocations<br/> Project: fs/lustre-release<br/> Branch: b2_12<br/> Current Patch Set: 1<br/> Commit: a7cfc5ffe18db69f63d4261526b0dda1914dc9bb</p> Duplicate Related LU-11347 LU-12071 Development Rank 1|i012rz: Rank (Obsolete) 9223372036854775807 Severity