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-12297 Lustre <p>Mount.lustre will try to tune max_sectors_kb, scheduler automatically for OSTs in default.<br/> This could cause some unexpected behavior if there are external tools which try to do same<br/> things using udev rules etc, as lustre could use raw block device or be on the top of logical (N logical) devices and as a result this tunings on fly will be a result of excellent butthearts<br/> especially when tuning comes from storage.</p> <p>In order to solve this problem, it makes sense to add a mount option like no_auto_tune<br/> etc to disable automatically tune by mount.lustre util.</p> LU-12297

Add an option to disable mount.lustre automatical tune

Improvement Minor Resolved Duplicate Wang Shilong Wang Shilong patch Tue, 14 May 2019 11:39:53 +0000 Sat, 26 Sep 2020 08:49:23 +0000 Tue, 14 Jul 2020 20:38:52 +0000 0 9 <p><del>Wang Shilong (wshilong@ddn.com) uploaded a new patch:</del> <a href="https://review.whamcloud.com/34859" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/34859</a><br/> <del>Subject: <a href="https://jira.whamcloud.com/browse/LU-12297" title="Add an option to disable mount.lustre automatical tune" class="issue-link" data-issue-key="LU-12297"><del>LU-12297</del></a> utils: add an option to disable mount.lustre auto tune</del><br/> <del>Project: fs/lustre-release</del><br/> <del>Branch: master</del><br/> <del>Current Patch Set: 1</del><br/> <del>Commit: 73767e5dfa772f0a3d99f3b0aa35df37b5664c8d</del></p> <p>I think we'd better to control the tune from mount_lustre rather than only ldsikfs side.<br/> The major goal of this option is let lustre free from backend storage tuning, and give a chance to manage-utils or admin (out of native lustre, e.g Exascalser from DDN) who are more professional and proficient in tuning field to take over the job.<br/> Actually tune to zfs is more complex than ldiskfs, and this option is also very useful to osd-zfs sites.</p> <p>Hi, Shilong,</p> <p>I think we have a similar way to do that. Please see <a href="https://jira.whamcloud.com/browse/LU-9132" title="Tuning max_sectors_kb on mount" class="issue-link" data-issue-key="LU-9132"><del>LU-9132</del></a>. Also you can refer to <a href="https://jira.whamcloud.com/browse/LU-9551" title="I/O errors when lustre uses multipath devices" class="issue-link" data-issue-key="LU-9551"><del>LU-9551</del></a> for further detail. </p> <p>Thanks,<br/> Yangsheng</p> <p>Hi Sheng,</p> <p> Yup, that ticket solved some of problem that we hit currently, but isn't enough.<br/> Further what want is to add a mount option disable any Lustre auto tune for ZFS/ldiskfs.</p> <p>For now, we want to disable max_sector_kb and scheduler tune for ldiskfs, but newly<br/> tuned approach might be added in the future.</p> <p>Fix this via <a href="https://jira.whamcloud.com/browse/LU-12029" title="do not try to muck with max_sectors_kb on multipath configurations" class="issue-link" data-issue-key="LU-12029">LU-12029</a>.</p> Duplicate LU-12029 Related LU-9132 LU-12387 Development Rank 1|i00g8n: Rank (Obsolete) 9223372036854775807