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-10016 Lustre <p>May be related to <a href="https://jira.whamcloud.com/browse/LU-9960" title="Rolling downgrade master to 2.10 - unable to import zpools" class="issue-link" data-issue-key="LU-9960"><del>LU-9960</del></a>. It fixed the "can't import into ZFS 6.5.7 because a 7.1 feature is installed" issue.</p> <p>Two downgrade tests:<br/> Downgrade 2.10.1 to 2.10.0: zfs 7.1 to zfs 6.5.9 - works<br/> Downgrade 2.10.1 to 2.9.0: zfs 7.1 to zfs 6.5.7 - pool not found</p> <p>Pool not found is seen with zpool import &lt;pool name&gt; and zpool import &lt;pool GUID&gt;.</p> trevis LU-10016

Downgrading Lustre 2.10.1 ZFS to 2.9.0 ZFS gives a pool cannot be found error on import

Bug Critical Closed Cannot Reproduce Nathaniel Clark James Casper zfs Thu, 21 Sep 2017 15:22:53 +0000 Mon, 25 Sep 2017 21:33:08 +0000 Mon, 25 Sep 2017 21:08:55 +0000 Lustre 2.10.1 0 5 <p>Nathaniel</p> <p>Could you please advise?</p> <p>Thanks</p> <p>Peter</p> <p>James, do you have more information about the errors printed when this problem happens?</p> <div class="preformatted panel" style="border-width: 1px;"><div class="preformattedContent panelContent"> <pre>[root@trevis-62 ~]# zpool import -f 11022747677743727868 cannot import '11022747677743727868': no such pool available </pre> </div></div> <p>Can you show a bare <tt>zfs import</tt> from trevis-62 (via ZFS 0.6.5.7)?</p> <p>I assume this is Lustre 2.10.1-RC1 (so with the <a href="https://jira.whamcloud.com/browse/LU-9960" title="Rolling downgrade master to 2.10 - unable to import zpools" class="issue-link" data-issue-key="LU-9960"><del>LU-9960</del></a> patch).</p> <p>I'm running another upgrade/downgrade test now (EE3 --&gt; 2.10.1 --&gt; EE3). EE3 also uses 6.5.7 ZFS, so if I don't see this issue there, I'll retest 2.9.0 --&gt; 2.10.1 --&gt; 2.9.0.</p> <p>Downgrade from 2.10.1 to EE3 passed. Retesting 2.10.1 to 2.9.0. Will close on Monday if that passes.</p> <p>Also passed in a 2.10.1 to 2.9.0 retest. Most likely user error. Closing.</p> Related LU-9960 Development Rank 1|hzzkkf: Rank (Obsolete) 9223372036854775807 Severity