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    <p>My apologies I meant 2.5.34 not 2.6.34.  We'd like to get up to
      2.10.4 which is what our clients are running.  Recently we
      upgraded our cluster to CentOS7 which necessitated the client
      upgrade.  Our storage servers though stayed behind on 2.5.34.</p>
    <p>-Paul Edmon-<br>
    </p>
    <br>
    <div class="moz-cite-prefix">On 07/23/2018 01:00 PM, Jeff Johnson
      wrote:<br>
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cite="mid:CAFCYAserCuELytXq3gPRo1_1BY0A05SFsR=D1GpZQwNWZJ-uqQ@mail.gmail.com">
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      <div dir="ltr">Paul,
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        <div>2.6.34 is a kernel version. What version of Lustre are you
          at now? Some updates are easier than others.</div>
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        <div>--Jeff</div>
      </div>
      <div class="gmail_extra"><br>
        <div class="gmail_quote">On Mon, Jul 23, 2018 at 8:59 AM, Paul
          Edmon <span dir="ltr"><<a
              href="mailto:pedmon@cfa.harvard.edu" target="_blank"
              moz-do-not-send="true">pedmon@cfa.harvard.edu</a>></span>
          wrote:<br>
          <blockquote class="gmail_quote" style="margin:0 0 0
            .8ex;border-left:1px #ccc solid;padding-left:1ex">We have
            some old large scale Lustre installs that are running 2.6.34
            and we want to get these up to the latest version of
            Lustre.  I was curious if people in this group have any
            experience with doing this and if they could share them. 
            How do you handle upgrades like this?  How much time does it
            take?  What are the pitfalls?  How do you manage it with
            minimal customer interruption? Should we just write off
            upgrading and stand up new servers that are on the correct
            version (in which case we need to transfer the several PB's
            worth of data over to the new system)?<br>
            <br>
            Thanks for your wisdom.<br>
            <br>
            -Paul Edmon-<br>
            <br>
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        <div><br>
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        -- <br>
        <div class="gmail_signature" data-smartmail="gmail_signature">
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            <div>
              <div dir="ltr">------------------------------<br>
                Jeff Johnson<br>
                Co-Founder<br>
                Aeon Computing<br>
                <br>
                <a href="mailto:jeff.johnson@aeoncomputing.com"
                  target="_blank" moz-do-not-send="true">jeff.johnson@aeoncomputing.com</a><br>
                <a href="http://www.aeoncomputing.com" target="_blank"
                  moz-do-not-send="true">www.aeoncomputing.com</a><br>
                t: 858-412-3810 x1001   f: 858-412-3845<br>
                m: 619-204-9061<br>
                <br>
                4170 Morena Boulevard, Suite C - San Diego, CA 92117
                <div><br>
                </div>
                <div>High-Performance Computing / Lustre Filesystems /
                  Scale-out Storage</div>
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