<div class="socmaildefaultfont" dir="ltr" style="font-family:Arial, Helvetica, sans-serif;font-size:10pt" ><div dir="ltr" >Rafael,</div>
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<div dir="ltr" >Changing the value of <strong>maxblocksize</strong> today <em>does</em> require the entire cluster to be stopped -- this is a current limitation in the product (which we are looking into eliminating).</div>
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<div dir="ltr" > Felipe</div>
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<div dir="ltr" >----<br>Felipe Knop knop@us.ibm.com<br>GPFS Development and Security<br>IBM Systems<br>IBM Building 008<br>2455 South Rd, Poughkeepsie, NY 12601<br>(845) 433-9314 T/L 293-9314<br> </div>
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<blockquote data-history-content-modified="1" data-history-expanded="1" dir="ltr" style="border-left:solid #aaaaaa 2px; margin-left:5px; padding-left:5px; direction:ltr; margin-right:0px" >----- Original message -----<br>From: "Rafael Cezario" <Rafael.Cezario@ibm.com><br>Sent by: gpfsug-discuss-bounces@spectrumscale.org<br>To: "gpfsug main discussion list" <gpfsug-discuss@spectrumscale.org><br>Cc:<br>Subject: [EXTERNAL] [gpfsug-discuss] Online migration<br>Date: Wed, Nov 13, 2019 12:24 PM<br> <br><span style=" font-size:10pt;font-family:sans-serif" >Hello,</span><br><br><span style=" font-size:10pt;font-family:sans-serif" >I have a Spectrum Scale cluster with 10 nodes on the version 4.2.<br>The cluster have maxblocksize=DEFAULT.<br>I will migrate all nodes to 5.0.3 (online) none downtime.</span><br><br><span style=" font-size:10pt;font-family:sans-serif" >But the maxblocksize is fixed on the mmlsconfig after the migration (the man have this information)</span><br><br><span style=" font-size:10pt;font-family:sans-serif" >maxblocksize 1M</span><br><br><span style=" font-size:10pt;font-family:sans-serif" >man mmchconfig</span><br><span style=" font-size:10pt;font-family:sans-serif" ><b>Note</b>: When you migrate a cluster from an earlier version to 5.0.0 or later, the value of maxblocksize stays the same. However, if maxblocksize was set to DEFAULT in the earlier version of the cluster, then migrating it to 5.0.0 or later sets it explicitly to 1 MiB, which was the default value in earlier versions. To change maxblocksize to the default value after migrating to 5.0.0 or later, set maxblocksize=DEFAULT (4 MiB).</span><br><br><span style=" font-size:10pt;font-family:sans-serif" >How Can I perform non-stop migration and after migration create a new filesystem with blocksize = 4MiB?</span><br><br><span style=" font-size:10pt;font-family:sans-serif" >My question is about finishing the migration and create a new filesystem with block size set to 4 MiB, its won't be possible until the maxblocksize changes.<br>In a environment where all migration will be done without stopping the cluster, my question was if there was any alternative<br>This behavior forces the entire cluster to stop.</span><br>
<table style="border-collapse:collapse;" width="650" > <tbody> <tr height="8" > <td style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="384" ><span style=" font-size:9pt;font-family:Arial" >Regards,</span><br> <br> <span style=" font-size:12pt;color:#8f8f8f;font-family:Arial" ><b>Rafael Cezário Damásio Cunha</b></span><br> <span style=" font-size:9pt;font-family:Arial" >IT Specialist - PowerVM/AIX/Spectrum Scale<br> Technology Support Services<br> Global Technology Services</span></td> <td style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="265" > <div align="right" ><br> <img alt="IBM" s_org_src="http://esign.webmaster.ibm.com/img/ibm2.gif" style="border:0px solid;" width="83" height="30" ></div> </td> </tr> </tbody></table>
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<table style="border-collapse:collapse;" width="650" > <tbody> <tr height="8" > <td colspan="2" style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="650" > <hr></td> </tr> <tr valign="top" height="8" > <td style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="487" ><span style=" font-size:7pt;color:#4181c0;font-family:Arial" ><b>Mobile:</b></span><span style=" font-size:7pt;color:#5f5f5f;font-family:Arial" >55-6198122-4435</span><br> <span style=" font-size:7pt;color:#4181c0;font-family:Arial" ><b>E-mail:</b></span><a href="mailto:rafael.cezario@ibm.com" target="_blank"><span style=" font-size:7pt;color:#5f5f5f;font-family:Arial" ><u>rafael.cezario@ibm.com</u></span></a></td> <td style="border-style:none none none none;border-color:#000000;border-width:0px 0px 0px 0px;padding:0px 0px;" width="162" > <div align="right" ><span style=" font-size:7pt;color:#5f5f5f;font-family:Arial" >Scn Quadra 4, Bloco B, n.100<br> Brasilia, DF 70714-900<br> Brazil</span></div> </td> </tr> </tbody></table>
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<div><font size="2" face="Default Monospace,Courier New,Courier,monospace" >_______________________________________________<br>gpfsug-discuss mailing list<br>gpfsug-discuss at spectrumscale.org<br><a href="http://gpfsug.org/mailman/listinfo/gpfsug-discuss" target="_blank">http://gpfsug.org/mailman/listinfo/gpfsug-discuss</a> </font></div></blockquote>
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