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-14969 Lustre <p>The SPECStorage test assumes we can do direct i/o at a 512 byte alignment boundary.  This is not the case in Lustre, since we have to be page aligned.</p> <p>The easy solution is to do what GPFS and several other file systems do:<br/> Fall back to buffered I/O in this case.  This is supported behavior in the kernel since at least 2.6.32.</p> LU-14969

Fall back to buffered I/O for unaligned direct I/O

New Feature Minor Resolved Won't Do Patrick Farrell Patrick Farrell Fri, 27 Aug 2021 16:45:50 +0000 Thu, 17 Mar 2022 15:49:58 +0000 Thu, 17 Mar 2022 15:49:58 +0000 0 4 <p>"Patrick Farrell &lt;pfarrell@whamcloud.com&gt;" uploaded a new patch: <a href="https://review.whamcloud.com/44761/" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/44761/</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-14969" title="Fall back to buffered I/O for unaligned direct I/O" class="issue-link" data-issue-key="LU-14969"><del>LU-14969</del></a> llite: DIO fall back to buffered<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 3<br/> Commit: 40413ac53819c8f68abb9925bcc31c844b3228b0</p> <p>This turned out to be much harder than expected, so we're just going to do unaligned direct I/O support instead, see <a href="https://jira.whamcloud.com/browse/LU-13805" title="i/o path: Unaligned direct i/o" class="issue-link" data-issue-key="LU-13805">LU-13805</a></p> Related LU-13802 Development Rank 1|i022xb: Rank (Obsolete) 9223372036854775807