Whamcloud Community JIRA https://jira.whamcloud.com This file is an XML representation of an issue en-us 9.4.14 940014 05-12-2023 [LU-11383] A lot of cfs_fail_loc error message for Fake I/O https://jira.whamcloud.com/browse/LU-11383 Lustre <p>Usually, enabling fake I/O means there will be benchmark running on the system. However, a lot of messages are printed to the console:</p> <p> </p> <p>Sep 17 05:50:49 es200nv2-vm1 kernel: systemd-journald<span class="error">&#91;690&#93;</span>: /dev/kmsg buffer overrun, some messages lost.<br/> Sep 17 05:50:49 es200nv2-vm1 kernel: Lustre: *** cfs_fail_loc=238, val=0***<br/> Sep 17 05:50:49 es200nv2-vm1 kernel: Lustre: *** cfs_fail_loc=238, val=0***<br/> Sep 17 05:50:49 es200nv2-vm1 kernel: Lustre: *** cfs_fail_loc=238, val=0***<br/> Sep 17 05:50:49 es200nv2-vm1 kernel: Lustre: *** cfs_fail_loc=238, val=0***<br/> Sep 17 05:50:49 es200nv2-vm1 kernel: Lustre: *** cfs_fail_loc=238, val=0***<br/> Sep 17 05:50:49 es200nv2-vm1 kernel: Lustre: *** cfs_fail_loc=238, val=0***</p> <p> </p> <p>This is annoying, because a lot of CPU resource will be used by message printing.</p> LU-11383 A lot of cfs_fail_loc error message for Fake I/O Improvement Minor Resolved Duplicate Li Xi Li Xi Mon, 17 Sep 2018 06:49:25 +0000 Wed, 19 Dec 2018 21:15:16 +0000 Thu, 25 Oct 2018 14:29:03 +0000 0 3 <p>Li Xi (lixi@ddn.com) uploaded a new patch: <a href="https://review.whamcloud.com/33174" class="external-link" target="_blank" rel="nofollow noopener">https://review.whamcloud.com/33174</a><br/> Subject: <a href="https://jira.whamcloud.com/browse/LU-11383" title="A lot of cfs_fail_loc error message for Fake I/O" class="issue-link" data-issue-key="LU-11383"><del>LU-11383</del></a> ofd: keep fake IO quiet<br/> Project: fs/lustre-release<br/> Branch: master<br/> Current Patch Set: 1<br/> Commit: 96453ee4682047196ecce4aef4db379bb9ad73f2</p> <p>There is something broken with the CDEBUG rate limiting in libcfs in master. It shouldn't print so many messages. </p> <p>Yeah, that makes sense. I didn't notice so many messages until recently.</p> Duplicate LU-11373 LU-11384 Development Rank 1|i002j3: Rank (Obsolete) 9223372036854775807