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<p class="MsoNormal">Hello,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">We noticed <i>Operation not supported (95)</i> error returned when “lfs migrate” command being run on a directory including files which have been hsm archived to S3 on a 2.15 lustre file system with multiple MDS (DNE)<br>
<br>
<o:p></o:p></p>
<p class="MsoNormal"># lfs mkdir -i 0 testdir<o:p></o:p></p>
<p class="MsoNormal"># cd testdir/<o:p></o:p></p>
<p class="MsoNormal"># echo "123" > a.txt<o:p></o:p></p>
<p class="MsoNormal"># lfs hsm_archive a.txt<o:p></o:p></p>
<p class="MsoNormal"># cd ..<o:p></o:p></p>
<p class="MsoNormal"># lfs migrate -m 1 testdir<o:p></o:p></p>
<p class="MsoNormal">lfs migrate: testdir/a.txt migrate failed: Operation not supported (95)<br>
<br>
Once we enable migrate_hsm_allowed, we don’t see errors/issues anymore. <o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># lctl get_param mdt.*.migrate_hsm_allowed<o:p></o:p></p>
<p class="MsoNormal">mdt.abcdefg-MDT0001.migrate_hsm_allowed=0<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"># lctl set_param mdt.*.migrate_hsm_allowed=1<o:p></o:p></p>
<p class="MsoNormal">mdt.abcdefg-MDT0001.migrate_hsm_allowed=1<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My question is why we don’t set migrate_hsm_allowed to 1 as default value and is there concern we should know if we choose to set that to 1? Thanks!<br>
<br>
Please let me know if I can provide any more information.<br>
<br>
Thanks,<br>
Huaqing Wang<br>
<br>
<br>
<br>
<o:p></o:p></p>
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