Its also worth getting a dump of your initiator group information too (we had LUN re-sig and lost out igroup info doing a head / OS upgrade). Luckily we had screenshots and dumps of the sigs to re-create things afterwards.<div>
<br></div><div>Cheers,</div><div>Raj.<br><br><div class="gmail_quote">On Sat, Mar 27, 2010 at 5:31 PM, Learmonth, Peter <span dir="ltr">&lt;<a href="mailto:Peter.Learmonth@netapp.com">Peter.Learmonth@netapp.com</a>&gt;</span> wrote:<br>
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<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">Hi Suresh</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">ONTAP upgrades should not cause LUN serial numbers to change, so
resignaturing should not be necessary.  If LUN S/N do change, change them back
and ESX should rescan and be happy.</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A"> </span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">Before you start, collect “lun show -v”.</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">After upgrade, look at lun show -v again and compare LUN
Serial#.</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A"> </span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">If they changed, for each LUN</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">lun offline  &lt;lun&gt;</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">lun serial &lt;lun&gt; &lt;old_sn&gt; </span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">lun online  &lt;lun&gt;</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A"> </span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">Share and enjoy!</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A"> </span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A">Peter</span></p>

<p class="MsoNormal"><span style="font-size:10.0pt;color:#5F497A"> </span></p>

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<p class="MsoNormal"><b><span style="font-size:10.0pt">From:</span></b><span style="font-size:10.0pt"> Suresh Rajagopalan [mailto:<a href="mailto:SRajagopalan@williamoneil.com" target="_blank">SRajagopalan@williamoneil.com</a>]
<br>
<b>Sent:</b> Friday, March 26, 2010 9:15 PM<br>
<b>To:</b> <a href="mailto:toasters@mathworks.com" target="_blank">toasters@mathworks.com</a><br>
<b>Subject:</b> LUN resignaturing</span></p>

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</div><div><div></div><div class="h5">

<p class="MsoNormal"> </p>

<p class="MsoNormal"><span style="color:black"> </span></p>

<p class="MsoNormal"><span style="color:black">We’re running some ESX 4.0 hosts
with VMFS and RDM LUNs on our filers running 7.2.6.1.  We are planning a
upgrade to 7.3.2</span></p>

<p class="MsoNormal"><span style="color:black"> </span></p>

<p class="MsoNormal"><span style="color:black">Should we expect  to do LUN
resignatures on VMware after the upgrade?</span></p>

<p class="MsoNormal"><span style="color:black"> </span></p>

<p class="MsoNormal"><span style="color:black">Thanks</span></p>

<p class="MsoNormal"><span style="color:black">Suresh</span></p>

<p class="MsoNormal"><span style="color:black"> </span></p>

<p class="MsoNormal"> </p>

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