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-3767 Lustre <p>I understand that ldiskfs has not been extensively tested on LUNs over 24TB with lustre 1.8.x and el5.x and the force_over_24tb option is required to format a larger LUN. We would like to take advantage of 32TB LUNS from a RAID6 with 8x4TB drives if at all possible on a 1.8 branch. Has testing on larger OSTs been undertaken since <a href="https://jira.whamcloud.com/browse/LU-136" title="test e2fsprogs-1.42.wc1 against 32TB+ ldiskfs filesystems" class="issue-link" data-issue-key="LU-136"><del>LU-136</del></a>, which appeared to only test 128TB on the 2.1 code? Are there any other issues that might prevent 32TB OSTs from working?</p> RHEL5.9, distribution provided ib stack LU-3767

32TB OST support in 1.8.9

New Feature Major Resolved Incomplete James Nunez Blake Caldwell Thu, 15 Aug 2013 17:31:11 +0000 Sat, 14 Sep 2013 03:53:55 +0000 Sat, 14 Sep 2013 03:53:54 +0000 Lustre 1.8.9 0 6 <p><a href="https://jira.whamcloud.com/browse/LU-419" title="Running 1.8.6WC the mkfs.lustre failed to format a 22.94TB LUN, Size of device too big to be expressed in 32 bits using a block size of 4096 " class="issue-link" data-issue-key="LU-419"><del>LU-419</del></a> enabled the 64-bit feature to allow formatting LUNS larger than 16TB and was landed in 1.8.7</p> <p>James</p> <p>Please can you help with this one?</p> <p>Thanks</p> <p>Peter</p> <p>Blake, <br/> I'm looking into if there are any issues with 32TB OST in 1.8.9. </p> <p>By the way, what version of e2fsprogs are you using?</p> <p>Thanks,<br/> James</p> <p>e2fsprogs-1.42.3.wc3-0redhat</p> <p>and 2.6.18-348.3.1.el5 kernel</p> <p>Thanks for the info, Blake. </p> <p>I'm just trying to find out if there was a technical reason why the patch for b1_8 <a href="http://review.whamcloud.com/#/c/589/" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/589/</a> only increased the max OST size from 16 TB to 24TB and not larger. </p> <p>Prior to landing <a href="http://review.whamcloud.com/#/c/589/1" class="external-link" target="_blank" rel="nofollow noopener">http://review.whamcloud.com/#/c/589/1</a>, format and mount of 128TB LUNs with 1.8.6 were successful using the "force_over_16tb" flag. Only a partial test, llverdev and llverfs, was run on the 128TB LUNs. Full tests were not run.</p> <p>Officially, we've only tested and support up to 24TB LUNs for 1.8.x, but it looks like it just may work. </p> <p>ORNL has decided to not test/create 32TB LUNs for use with their 1.8 file systems. Thus we are closing this ticket since the testing is no longer needed. </p> <p>Please reopen this ticket if there is a desire to put 32 TB LUNs into production. </p> Development Rank 1|hzvy1z: Rank (Obsolete) 9701