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-3814] Fix sanity-hsm test 24: "Release does not change a/mtime (i/o)" https://jira.whamcloud.com/browse/LU-3814 Lustre LU-3814 Fix sanity-hsm test 24: "Release does not change a/mtime (i/o)" Technical task LU-3647 Critical Resolved Duplicate John Hammond Jodi Levi Thu, 22 Aug 2013 13:15:50 +0000 Wed, 16 Oct 2013 02:56:24 +0000 Thu, 5 Sep 2013 18:44:21 +0000 Lustre 2.5.0 0 5 <p>John, please take a look since you're looking at this piece of code.</p> <p>Please see</p> <p><a href="http://review.whamcloud.com/7442" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/7442</a> <a href="https://jira.whamcloud.com/browse/LU-3832" title="osc_io_read_start() ignores O_NOATIME, updates i_atime" class="issue-link" data-issue-key="LU-3832"><del>LU-3832</del></a> clio: honor O_NOATIME</p> <p><a href="http://review.whamcloud.com/7461" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/7461</a> <a href="https://jira.whamcloud.com/browse/LU-3811" title="non-root users cannot archive files, root cannot archive non-root users&#39; files" class="issue-link" data-issue-key="LU-3811"><del>LU-3811</del></a> hsm: handle file ownership and timestamps</p> <p><a href="http://review.whamcloud.com/7472" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/7472</a> <a href="https://jira.whamcloud.com/browse/LU-3814" title="Fix sanity-hsm test 24: &quot;Release does not change a/mtime (i/o)&quot;" class="issue-link" data-issue-key="LU-3814"><del>LU-3814</del></a> hsm: strengthen sanity-hsm test 24</p> <p>On <a href="http://review.whamcloud.com/7461" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/7461</a> there was some discussion about setting the inode timestamps in mdt_hsm_release(). To test this I compared 7442+7461 with setting LA_</p> {A,M,C}TIME to 7442+7461 without setting LA_{A,M,C} <p>TIME. The script I used (hsm-times.sh) is attached. In the timestamp lines the first column is the current time, the second, third, and fourth are the atime, mtime, and ctime. I ran simultaneously on two nodes so the command execution times are all the same upto 1 second.</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>### without LA_ATIME | LA_MTIME | LA_CTIME 1377703320: # sys_creat /mnt/lustre/f0 1377703320: 1377703320 1377703320 1377703320 1377703325: 1377703320 1377703320 1377703320 # dd if=/dev/zero of=/mnt/lustre/f0 bs=1M count=10 conv=fsync status=noxfer 10+0 records in 10+0 records out 1377703325: 1377703320 1377703325 1377703325 1377703330: 1377703320 1377703325 1377703325 # dd if=/mnt/lustre/f0 of=/dev/null bs=1M count=10 status=noxfer 10+0 records in 10+0 records out 1377703330: 1377703330 1377703325 1377703325 1377703335: 1377703330 1377703325 1377703325 # dd if=/dev/zero of=/mnt/lustre/f0 bs=1M count=1 conv=fsync,notrunc status=noxfer 1+0 records in 1+0 records out 1377703335: 1377703330 1377703335 1377703335 1377703340: 1377703330 1377703335 1377703335 # remount_clients 1377703341: 1377703330 1377703335 1377703335 1377703346: 1377703330 1377703335 1377703335 # lfs hsm_archive /mnt/lustre/f0 1377703346: 1377703330 1377703335 1377703335 1377703361: 1377703330 1377703335 1377703335 1377703366: 1377703330 1377703335 1377703335 # lfs hsm_release /mnt/lustre/f0 1377703366: 1377703330 1377703335 1377703335 1377703371: 1377703330 1377703335 1377703335 # remount_clients 1377703371: 1377703320 1377703325 1377703325 ### with LA_ATIME | LA_MTIME | LA_CTIME 1377703320: # sys_creat /mnt/lustre/f0 1377703320: 1377703320 1377703320 1377703320 1377703325: 1377703320 1377703320 1377703320 # dd if=/dev/zero of=/mnt/lustre/f0 bs=1M count=10 conv=fsync status=noxfer 10+0 records in 10+0 records out 1377703325: 1377703320 1377703325 1377703325 1377703330: 1377703320 1377703325 1377703325 # dd if=/mnt/lustre/f0 of=/dev/null bs=1M count=10 status=noxfer 10+0 records in 10+0 records out 1377703330: 1377703330 1377703325 1377703325 1377703335: 1377703330 1377703325 1377703325 # dd if=/dev/zero of=/mnt/lustre/f0 bs=1M count=1 conv=fsync,notrunc status=noxfer 1+0 records in 1+0 records out 1377703335: 1377703330 1377703335 1377703335 1377703340: 1377703330 1377703335 1377703335 # remount_clients 1377703341: 1377703330 1377703335 1377703335 1377703346: 1377703330 1377703335 1377703335 # lfs hsm_archive /mnt/lustre/f0 1377703346: 1377703330 1377703335 1377703335 1377703361: 1377703330 1377703335 1377703335 1377703366: 1377703330 1377703335 1377703335 # lfs hsm_release /mnt/lustre/f0 1377703366: 1377703330 1377703335 1377703335 1377703371: 1377703330 1377703335 1377703335 # remount_clients 1377703371: 1377703330 1377703335 1377703335 </pre> </div></div> <p>Without setting the timestamps, after release and remount, all timestamps have reverted to those from the first write.</p> <p>I tried increasing the sleep duration to 30, 60, and 120, and still saw that without setting the timestamps in mdt_hsm_release() the final timestamps would be incorrect.</p> <p>I see. Thanks for the experiment. </p> <p>Duplicate of <a href="https://jira.whamcloud.com/browse/LU-3811" title="non-root users cannot archive files, root cannot archive non-root users&#39; files" class="issue-link" data-issue-key="LU-3811"><del>LU-3811</del></a>.</p> Development Rank 1|hzvyvj: Rank (Obsolete) 9857