<html><head></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; ">Thanks for this.<div><br></div><div>we have zero experience of patching lustre 1.8.7 against newer kernels, are there any known pitfalls we should avoid.</div><div><br></div><div><br><div apple-content-edited="true">
<span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-align: -webkit-auto; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><span class="Apple-style-span" style="border-collapse: separate; color: rgb(0, 0, 0); font-family: Helvetica; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: 2; text-indent: 0px; text-transform: none; white-space: normal; widows: 2; word-spacing: 0px; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px; font-size: medium; "><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space; "><div>Professor Samuel Aparicio BM BCh PhD FRCPath<br>Nan and Lorraine Robertson Chair UBC/BC Cancer Agency<br>675 West 10th, Vancouver V5Z 1L3, Canada.<br>office: +1 604 675 8200 lab website <a href="http://molonc.bccrc.ca">http://molonc.bccrc.ca</a><br><br><br></div></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></div></span><br class="Apple-interchange-newline"></span><br class="Apple-interchange-newline">
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<br><div><div>On Mar 20, 2012, at 9:25 AM, Joe Landman wrote:</div><br class="Apple-interchange-newline"><blockquote type="cite"><div>On 03/20/2012 12:18 PM, Samuel Aparicio wrote:<br><blockquote type="cite">Hello, thanks for this - it's a 16 disk raid10 (with one spare) so 24Tb.<br></blockquote><blockquote type="cite">I previously tried 1.0 and 1.2 metadata, to no effect.<br></blockquote><blockquote type="cite">we are using 256 chunk sizes, I haven't tried reverting to 64k but will<br></blockquote><blockquote type="cite">do so.<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">this looks to me like something different - there was an md patch for<br></blockquote><blockquote type="cite">2.6.18 kernels relating to updating of superblocks on arrays,<br></blockquote><blockquote type="cite">which this might be ...<br></blockquote><blockquote type="cite"><br></blockquote><blockquote type="cite">the storage vendor has tried md with 3Tb disks and md version 3.2.3 and<br></blockquote><blockquote type="cite">sees no problems, but this is also with a much later kernel version.<br></blockquote><blockquote type="cite">I am not sure 3.2.3 would work with kernels as old as 2.6.18-274<br></blockquote><br>It will, but the issue is more than likely the age of the kernel <br>combined with driver issues. We'd tried AoE in the dim and distant <br>past, and found all manner of corruption problems we couldn't work around.<br><br>If you can update to a newer kernel, this might be a better course. <br>1.8.7+ builds against some of the more modern kernels. I don't think <br>we've posted a build against our 2.6.32.58.scalable kernel, but I'll <br>look into it.<br><br><br>-- <br>Joseph Landman, Ph.D<br>Founder and CEO<br>Scalable Informatics Inc.<br>email: <a href="mailto:landman@scalableinformatics.com">landman@scalableinformatics.com</a><br>web : <a href="http://scalableinformatics.com">http://scalableinformatics.com</a><br> <a href="http://scalableinformatics.com/sicluster">http://scalableinformatics.com/sicluster</a><br>phone: +1 734 786 8423 x121<br>fax : +1 866 888 3112<br>cell : +1 734 612 4615<br>_______________________________________________<br>Lustre-discuss mailing list<br><a href="mailto:Lustre-discuss@lists.lustre.org">Lustre-discuss@lists.lustre.org</a><br>http://lists.lustre.org/mailman/listinfo/lustre-discuss<br></div></blockquote></div><br></div></body></html>