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-1646 Lustre <p>in lustre 2.1 and up, the lustre_fill_super() was changed to expect the anonymous pointer to be of the type struct lustre_mount_data2. however, the ifdef for lustre_get_sb() for kernels &lt; 2.6.18 was not updated. the attached patch seems to fix things but you might run into trouble when nfs exporting from these old kernels since lmd_mnt cannot be filled in for these older kernels.</p> sles10sp4 LU-1646

mounting lustre oops on older kernels

Bug Minor Resolved Duplicate Bob Glossman chas@cmf.nrl.navy.mil Thu, 19 Jul 2012 10:54:03 +0000 Mon, 12 Nov 2012 08:50:35 +0000 Mon, 12 Nov 2012 08:50:35 +0000 Lustre 2.1.2 0 2 <p>Which versions of Lustre are you using or plan to use? Some patches are in the works that affect you.</p> <p>2.1 for the foreseeable future.</p> <p>Hi Chas</p> <p>SLES10 is not officially supported for 2.1.x (see <a href="http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix" class="external-link" target="_blank" rel="nofollow noopener">http://wiki.whamcloud.com/display/PUB/Lustre+Support+Matrix</a>). There is some interest in adding this support. If you would like to get your patch landed into the Lustre tree could you please upload it into gerrit so that it can be tested and reviewed? Details on how to do this are on the Whamcloud wiki</p> <p>Thanks</p> <p>Peter</p> <p>this was fixed via <a href="https://jira.whamcloud.com/browse/LU-812" title="Support for Linux 3.0 kernels" class="issue-link" data-issue-key="LU-812"><del>LU-812</del></a> in commit 2eba197319886c4f2903fd937aebe69eea35290e. do i need to do anything for this to get backported to the 2.1 and 2.2 releases?</p> <p>Bob</p> <p>Could you please look into this change and see whether it would be practical to backport it to b2_1?</p> <p>Thanks</p> <p>Peter</p> <p>More than that patch would need to be back ported. See <a href="https://jira.whamcloud.com/browse/LU-1718" title="fix Lustre NFS re-export for 3.0+ kernels" class="issue-link" data-issue-key="LU-1718"><del>LU-1718</del></a> as well.</p> <p>The change in <a href="http://review.whamcloud.com/#change,1951" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,1951</a> can be back ported, but with side effects. <a href="https://jira.whamcloud.com/browse/LU-1718" title="fix Lustre NFS re-export for 3.0+ kernels" class="issue-link" data-issue-key="LU-1718"><del>LU-1718</del></a> mentioned by James in the previous comment tracks the disable of reexport of lustre fs to NFS due to this change. Doing the back port would disable reexport to NFS for old kernels just as it is for 3.0+ kernels. This would remain true until a fix for <a href="https://jira.whamcloud.com/browse/LU-1718" title="fix Lustre NFS re-export for 3.0+ kernels" class="issue-link" data-issue-key="LU-1718"><del>LU-1718</del></a> is completed and back ported.</p> <p>if we proceed with a back port we will also need <a href="https://jira.whamcloud.com/browse/LU-1718" title="fix Lustre NFS re-export for 3.0+ kernels" class="issue-link" data-issue-key="LU-1718"><del>LU-1718</del></a> back ported to reenable NFS export</p> <p>chas,<br/> Is it OK if we disable NFS export in 2.1.x for really old kernels? Can you possibly work around that restriction by using 1.8.x with such old kernels, at least until we have a fix from <a href="https://jira.whamcloud.com/browse/LU-1718" title="fix Lustre NFS re-export for 3.0+ kernels" class="issue-link" data-issue-key="LU-1718"><del>LU-1718</del></a> available?</p> <p>since you cant even mount lustre on really old kernels, i dont think anyone is using the nfs export feature. so this seems fine to me.</p> <p>back port to b2_1<br/> <a href="http://review.whamcloud.com/#change,3661" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,3661</a></p> <p>Also besides patch <a href="http://review.whamcloud.com/#change,3661" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,3661</a> from <a href="https://jira.whamcloud.com/browse/LU-812" title="Support for Linux 3.0 kernels" class="issue-link" data-issue-key="LU-812"><del>LU-812</del></a> you will need <a href="https://jira.whamcloud.com/browse/LU-1718" title="fix Lustre NFS re-export for 3.0+ kernels" class="issue-link" data-issue-key="LU-1718"><del>LU-1718</del></a> for NFS export which has the patch at <a href="http://review.whamcloud.com/#change,3840" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#change,3840</a>.</p> <p>Chas can you test both patches. Also if you can please try a NFS export on one of your clients with lustre.</p> <p>The patch from <a href="https://jira.whamcloud.com/browse/LU-812" title="Support for Linux 3.0 kernels" class="issue-link" data-issue-key="LU-812"><del>LU-812</del></a> that solves this problem has been landed to b2_1. This ticket can be closed.</p> <p>ok thanks James!</p> Related LU-1718 Development Rank 1|hzvgqv: Rank (Obsolete) 6362 Severity