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<p class="MsoNormal">(This is a newbie question.)<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Having got non-LVM version 9 drbdadm working with two storage nodes and a<o:p></o:p></p>
<p class="MsoNormal">few no-local-storage nodes, I'm attempting to graduate to using drbdmanage<o:p></o:p></p>
<p class="MsoNormal">and LVM. My goal is to have two storage nodes, one pure controller node<o:p></o:p></p>
<p class="MsoNormal">without data storage, and a few no-local-storage compute nodes. However, I<o:p></o:p></p>
<p class="MsoNormal">don't understand the green box in Figure 5 in the User's Guide, labeled as a<o:p></o:p></p>
<p class="MsoNormal">'Control node', 'controlvolume is a local LV', 'pure Controller', and 'nodes<o:p></o:p></p>
<p class="MsoNormal">without data storage'. This is the figure:<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal" style="margin-left:.5in"><a href="https://docs.linbit.com/ug-src/users-guide-9.0/images/drbdmanage-venn.png">https://docs.linbit.com/ug-src/users-guide-9.0/images/drbdmanage-venn.png</a><o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">The only LVM volume group I see mentioned in chapter 5 of the DRBD 9 UG<o:p></o:p></p>
<p class="MsoNormal">is the one it suggests to name 'drbdpool'. However, if the pure controller<o:p></o:p></p>
<p class="MsoNormal">has no data storage, how can the controlvolume be a local LV. Can someone<o:p></o:p></p>
<p class="MsoNormal">please enlighten a newbie on what seem to be contradictory descriptions?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">In case detail matters, I'm using drbd-9.0.9-1, drbdmanage-0.99.14, and<o:p></o:p></p>
<p class="MsoNormal">drbd-utils-9.1.1 compiled from source on Ubuntu 16.04.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Thanks,<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Robert Riches<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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