<div dir="ltr">Renar,<div><br></div><div>if you specify the filesystem blocksize of 1M during mmcr you don't have to restart anything. scale 5 didn't change anything on the behaviour of maxblocksize change while the cluster is online, it only changed the default passed to the blocksize parameter for create a new filesystem. one thing we might consider doing is changing the command to use the current active maxblocksize as input for mmcrfs if maxblocksize is below current default. </div><div><br></div><div>Sven</div><div><br></div></div><br><div class="gmail_quote"><div dir="ltr">On Fri, Feb 9, 2018 at 6:30 AM Grunenberg, Renar <<a href="mailto:Renar.Grunenberg@huk-coburg.de">Renar.Grunenberg@huk-coburg.de</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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<p class="MsoNormal"><span lang="EN-US">Felipe, all,<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">first thanks for clarification, but what was the reason for this logic? If i upgrade to Version 5 and want to create new filesystems, and the maxblocksize is on 1M, we must shutdown
the hole cluster to change this to the defaults to use the new one default. I had no understanding for that decision. We are at 7 x 24h availability with our cluster today, we had no real maintenance window here! Any circumvention are welcome.<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
<p class="MsoNormal"><span lang="EN-US">Regards Renar<u></u><u></u></span></p>
<p class="MsoNormal"><span lang="EN-US"><u></u> <u></u></span></p>
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<p><font style="font-family:Arial">Renar</font> <font style="font-family:Arial">Grunenberg</font><br>
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<p class="MsoNormal"><b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif">Von:</span></b><span style="font-size:11.0pt;font-family:"Calibri",sans-serif"> <a href="mailto:gpfsug-discuss-bounces@spectrumscale.org" target="_blank">gpfsug-discuss-bounces@spectrumscale.org</a> [mailto:<a href="mailto:gpfsug-discuss-bounces@spectrumscale.org" target="_blank">gpfsug-discuss-bounces@spectrumscale.org</a>]
<b>Im Auftrag von </b>Felipe Knop<br>
<b>Gesendet:</b> Freitag, 9. Februar 2018 14:59<br>
<b>An:</b> gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org" target="_blank">gpfsug-discuss@spectrumscale.org</a>><br>
<b>Betreff:</b> Re: [gpfsug-discuss] V5 Experience -- maxblocksize<u></u><u></u></span></p>
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<p><span style="font-size:10.0pt">All,</span><br>
<br>
<span style="font-size:10.0pt">Correct. There is no need to change the value of 'maxblocksize' for existing clusters which are upgraded to the 5.0.0 level. If a new file system needs to be created with a block size which exceeds the value of maxblocksize then
the mmchconfig needs to be issued to increase the value of maxblocksize (which requires the entire cluster to be stopped).</span><br>
<br>
<span style="font-size:10.0pt">For clusters newly created with 5.0.0, the value of maxblocksize is set to 4MB. See the references to maxblocksize in the mmchconfig and mmcrfs man pages in 5.0.0 .</span><br>
<br>
<span style="font-size:10.0pt">Felipe</span><br>
<br>
<span style="font-size:10.0pt">----<br>
Felipe Knop <a href="mailto:knop@us.ibm.com" target="_blank">knop@us.ibm.com</a><br>
GPFS Development and Security<br>
IBM Systems<br>
IBM Building 008<br>
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<img border="0" width="16" height="16" id="m_1879405624292340935_x0000_i1025" src="cid:image001.gif@01D3A1BA.8FC815C0" alt="Inactive hide details for "Uwe Falke" ---02/09/2018 06:54:10 AM---I suppose the new maxBlockSize default is <>1MB, so your conf"><span style="font-size:10.0pt;color:#424282">"Uwe
Falke" ---02/09/2018 06:54:10 AM---I suppose the new maxBlockSize default is <>1MB, so your config parameter was properly translated.</span><br>
<br>
<span style="font-size:10.0pt;color:#5f5f5f">From: </span><span style="font-size:10.0pt">"Uwe Falke" <<a href="mailto:UWEFALKE@de.ibm.com" target="_blank">UWEFALKE@de.ibm.com</a>></span><br>
<span style="font-size:10.0pt;color:#5f5f5f">To: </span><span style="font-size:10.0pt">gpfsug main discussion list <<a href="mailto:gpfsug-discuss@spectrumscale.org" target="_blank">gpfsug-discuss@spectrumscale.org</a>></span><br>
<span style="font-size:10.0pt;color:#5f5f5f">Date: </span><span style="font-size:10.0pt">02/09/2018 06:54 AM</span><br>
<span style="font-size:10.0pt;color:#5f5f5f">Subject: </span><span style="font-size:10.0pt">Re: [gpfsug-discuss] V5 Experience</span><br>
<span style="font-size:10.0pt;color:#5f5f5f">Sent by: </span><span style="font-size:10.0pt"><a href="mailto:gpfsug-discuss-bounces@spectrumscale.org" target="_blank">gpfsug-discuss-bounces@spectrumscale.org</a></span><u></u><u></u></p>
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<tt><span style="font-size:10.0pt">I suppose the new maxBlockSize default is <>1MB, so your config parameter
</span></tt><span style="font-size:10.0pt;font-family:"Courier New""><br>
<tt>was properly translated. I'd see no need to change anything.</tt><br>
<br>
<br>
<br>
<tt>Mit freundlichen Grüßen / Kind regards</tt><br>
<br>
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<tt>Dr. Uwe Falke</tt><br>
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<tt>From: "Grunenberg, Renar" <<a href="mailto:Renar.Grunenberg@huk-coburg.de" target="_blank">Renar.Grunenberg@huk-coburg.de</a>></tt><br>
<tt>To: "'<a href="mailto:gpfsug-discuss@spectrumscale.org" target="_blank">gpfsug-discuss@spectrumscale.org</a>'" </tt><br>
<tt><<a href="mailto:gpfsug-discuss@spectrumscale.org" target="_blank">gpfsug-discuss@spectrumscale.org</a>></tt><br>
<tt>Date: 02/09/2018 10:16 AM</tt><br>
<tt>Subject: [gpfsug-discuss] V5 Experience</tt><br>
<tt>Sent by: <a href="mailto:gpfsug-discuss-bounces@spectrumscale.org" target="_blank">gpfsug-discuss-bounces@spectrumscale.org</a></tt><br>
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<br>
<br>
<tt>Hallo All,</tt><br>
<tt>we updated our Test-Cluster from 4.2.3.6 to V5.0.0.1. So good so fine, but </tt>
<br>
<tt>I see after the mmchconfig release=LATEST a new common parameter </tt><br>
<tt>?maxblocksize 1M? </tt><br>
<tt>(our fs are on these blocksizes) is happening.</tt><br>
<tt>Ok, but if I will change this parameter the hole cluster was requestet </tt><br>
<tt>that:</tt><br>
<br>
<tt> root @sbdl7003(rhel7.4)> mmchconfig maxblocksize=DEFAULT</tt><br>
<tt>Verifying GPFS is stopped on all nodes ...</tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SAPL7012x1.t7.lan.tuhuk.de" target="_blank">SAPL7012x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SBDL7001x1.t7.lan.tuhuk.de" target="_blank">SBDL7001x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SAPL7013x1.t7.lan.tuhuk.de" target="_blank">SAPL7013x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SAPL7009x1.t7.lan.tuhuk.de" target="_blank">SAPL7009x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SAPL7008x1.t7.lan.tuhuk.de" target="_blank">SAPL7008x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SBDL7003x1.t7.lan.tuhuk.de" target="_blank">SBDL7003x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SBDL7004x1.t7.lan.tuhuk.de" target="_blank">SBDL7004x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: GPFS is still active on <a href="http://SAPL7001x1.t7.lan.tuhuk.de" target="_blank">SAPL7001x1.t7.lan.tuhuk.de</a></tt><br>
<tt>mmchconfig: Command failed. Examine previous error messages to determine </tt>
<br>
<tt>cause.</tt><br>
<tt>Can someone explain the behavior here, and same clarification in an update </tt>
<br>
<tt>plan what can we do to go to the defaults without clusterdown.</tt><br>
<tt>Is this a bug or a feature;-) </tt><br>
<br>
<tt>Regards Renar</tt><br>
<tt>Renar Grunenberg</tt><br>
<tt>Abteilung Informatik ? Betrieb</tt><br>
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