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<p class="MsoNormal"><span style="font-size:12.0pt">OK – I’ve run across this before, and it’s because of a bug (as I recall) having to do with CCR and quorum. What I think you can do is set the cluster to non-ccr (mmchcluster –ccr-disable) with all the nodes
down, bring it back up and then re-enable ccr.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">I’ll see if I can find this in one of the recent 4.2 release nodes.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Bob Oesterlin<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt">Sr Principal Storage Engineer, Nuance<o:p></o:p></span></p>
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<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
<p class="MsoNormal"><span style="font-size:12.0pt"><o:p> </o:p></span></p>
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<p class="MsoNormal"><b><span style="font-size:12.0pt;color:black">From: </span></b><span style="font-size:12.0pt;color:black"><gpfsug-discuss-bounces@spectrumscale.org> on behalf of "Buterbaugh, Kevin L" <Kevin.Buterbaugh@Vanderbilt.Edu><br>
<b>Reply-To: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Date: </b>Tuesday, September 19, 2017 at 4:03 PM<br>
<b>To: </b>gpfsug main discussion list <gpfsug-discuss@spectrumscale.org><br>
<b>Subject: </b>[EXTERNAL] [gpfsug-discuss] CCR cluster down for the count?<o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Hi All, <o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">We have a small test cluster that is CCR enabled. It only had/has 3 NSD servers (testnsd1, 2, and 3) and maybe 3-6 clients. testnsd3 died a while back. I did nothing about it at the time because it was due to be life-cycled as soon as
I finished a couple of higher priority projects.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">Yesterday, testnsd1 also died, which took the whole cluster down. So now resolving this has become higher priority… ;-)<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I took two other boxes and set them up as testnsd1 and 3, respectively. I’ve done a “mmsdrrestore -p testnsd2 -R /usr/bin/scp” on both of them. I’ve also done a "mmccr setup -F” and copied the ccr.disks and ccr.nodes files from testnsd2
to them. And I’ve copied /var/mmfs/gen/mmsdrfs from testnsd2 to testnsd1 and 3. In case it’s not obvious from the above, networking is fine … ssh without a password between those 3 boxes is fine.<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">However, when I try to startup GPFS … or run any GPFS command I get:<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">/root<o:p></o:p></p>
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<p class="MsoNormal">root@testnsd2# mmstartup -a<o:p></o:p></p>
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<p class="MsoNormal">get file failed: Not enough CCR quorum nodes available (err 809)<o:p></o:p></p>
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<p class="MsoNormal">gpfsClusterInit: Unexpected error from ccr fget mmsdrfs. Return code: 158<o:p></o:p></p>
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<p class="MsoNormal">mmstartup: Command failed. Examine previous error messages to determine cause.<o:p></o:p></p>
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<p class="MsoNormal">/root<o:p></o:p></p>
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<p class="MsoNormal">root@testnsd2#<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">I’ve got to run to a meeting right now, so I hope I’m not leaving out any crucial details here … does anyone have an idea what I need to do? Thanks…<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal">—<o:p></o:p></p>
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<p class="MsoNormal">Kevin Buterbaugh - Senior System Administrator<o:p></o:p></p>
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<p class="MsoNormal">Vanderbilt University - Advanced Computing Center for Research and Education<o:p></o:p></p>
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<p class="MsoNormal"><a href="mailto:Kevin.Buterbaugh@vanderbilt.edu">Kevin.Buterbaugh@vanderbilt.edu</a> - (615)875-9633<o:p></o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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