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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">I wouldn't consider the lack of an lfsck run a reason to rush into an upgrade. In most cases this will only result in some orphan OST objects consuming space for a while, or MDT files
returning ENOENT that can be deleted with "unlink".<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri">As for upgrading, there isn't any reason to stop at the different versions along the way.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Calibri;color:black">Cheers, Andreas<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Calibri;color:black">-- <o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Calibri;color:black">Andreas Dilger<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Calibri;color:black">Lustre Principal Architect<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:10.5pt;font-family:Calibri;color:black">Intel High Performance Data Division</span><span style="font-size:11.0pt;font-family:Calibri"><o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:Calibri"><o:p> </o:p></span></p>
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<p class="MsoNormal">On 2016/08/12, 02:32, "lustre-discuss on behalf of E.S. Rosenberg" <<a href="mailto:lustre-discuss-bounces@lists.lustre.org">lustre-discuss-bounces@lists.lustre.org</a> on behalf of
<a href="mailto:esr+lustre@mail.hebrew.edu">esr+lustre@mail.hebrew.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Yeah I stopped this and am strongly considering upgrading the servers to CentOS 6.7 + lustre 2.8, I hope to first test it on a test environment....<o:p></o:p></p>
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<p class="MsoNormal" style="margin-bottom:12.0pt">Did anyone run this type of upgrade? Should it work? Or should I take it in steps (2.6, 2.7 and only then 2.8)?<o:p></o:p></p>
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<p class="MsoNormal">Thanks,<o:p></o:p></p>
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<p class="MsoNormal">Eli<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">On Fri, Aug 12, 2016 at 9:49 AM, Dilger, Andreas <<a href="mailto:andreas.dilger@intel.com" target="_blank">andreas.dilger@intel.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:Calibri">Running "e2fsck --mdsdb" will take _much_ longer than a regular e2fsck, because the mdsdb database is sparsely written. I would
recommend not running the old e2fsprogs-based lfsck, since Lustre 2.5 has enough functionality to repair the Lustre-specific parts of the local filesystem (after a regular e2fsck), and Lustre 2.7 will also fix the MDT-OST consistency (orphan objects and dangling
MDT layout references).</span><o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:Calibri"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:Calibri;color:black">Cheers, Andreas</span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:Calibri;color:black">-- </span><span style="color:#888888"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:Calibri;color:black">Andreas Dilger</span><span style="color:#888888"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:Calibri;color:black">Lustre Principal Architect</span><span style="color:#888888"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:10.5pt;font-family:Calibri;color:black">Intel High Performance Data Division</span><span style="color:#888888"><o:p></o:p></span></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:11.0pt;font-family:Calibri"> </span><o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">On 2016/08/11, 20:19, "lustre-discuss on behalf of E.S. Rosenberg" <<a href="mailto:lustre-discuss-bounces@lists.lustre.org" target="_blank">lustre-discuss-bounces@lists.lustre.org</a>
on behalf of <a href="mailto:esr+lustre@mail.hebrew.edu" target="_blank">esr+lustre@mail.hebrew.edu</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">Sorry about spamming the list but I realize it may be better that subjects be split into threads....<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;margin-bottom:12.0pt">I started e2fsck --mdsdb 6 hours ago on an MDT that is 1T in size, am I being unreasonable if I think it should have been done by now?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">What type of runtimes have you seen?<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">I shudder to think how long this is going to take on the OSTs if this is normal runtime....<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"> <o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Thanks,<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto">Eli<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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