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-12746 Lustre <p>max_read_ahead_async_active can't be back to 0 (default value) from non-zero value.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre># mount -t lustre 10.0.11.220@o2ib10:/scratch0 /scratch0 # lctl get_param llite.*.max_read_ahead_async_active llite.scratch0-ffff8f1e453f3800.max_read_ahead_async_active=0 # lctl set_param llite.*.max_read_ahead_async_active=256 llite.scratch0-ffff8f1e453f3800.max_read_ahead_async_active=256 # lctl set_param llite.*.max_read_ahead_async_active=0 error: set_param: setting /sys/fs/lustre/llite/scratch0-ffff8f1e453f3800/max_read_ahead_async_active=0: Numerical result out of range # lctl get_param llite.*.max_read_ahead_async_active llite.scratch0-ffff8f1e453f3800.max_read_ahead_async_active=256 </pre> </div></div> master LU-12746

max_read_ahead_async_active can't set 0 from non-zero

Bug Minor Resolved Won't Fix Wang Shilong Shuichi Ihara Wed, 11 Sep 2019 02:58:13 +0000 Fri, 13 Dec 2019 02:07:08 +0000 Fri, 13 Dec 2019 02:07:08 +0000 0 2 <p>Yup, this is a known problem, the limitation comes from kernel workqueue did not support set to be 0 back.<img class="emoticon" src="https://jira.whamcloud.com/images/icons/emoticons/sad.png" height="16" width="16" align="absmiddle" alt="" border="0"/> </p> <p>This is limitation comes from kernel workqueue</p> Development Rank 1|i00mjz: Rank (Obsolete) 9223372036854775807 Severity