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3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-start-a-VM-from-instance-snapshot-using-Horizon-dashboard-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to start a VM from instance snapshot using Horizon dashboard on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/How-to-create-a-VM-using-the-OpenStack-CLI-client-on-3Engines-Cloud-cloud.html.html class=md-nav__link> <span class=md-ellipsis> How to create a VM using the OpenStack CLI client on 3Engines Cloud cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/OpenStack-user-roles-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> OpenStack User Roles on 3Engines Cloud </span> </a> </li> <li class=md-nav__item> <a href=../cloud/Resizing-a-virtual-machine-using-OpenStack-Horizon-on-3Engines-Cloud.html.html class=md-nav__link> <span class=md-ellipsis> Resizing a virtual machine using OpenStack Horizon on 3Engines 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</nav> </div> </div> </div> <div class="md-sidebar md-sidebar--secondary" data-md-component=sidebar data-md-type=toc> <div class=md-sidebar__scrollwrap> <div class=md-sidebar__inner> <nav class="md-nav md-nav--secondary" aria-label="On this page"> <label class=md-nav__title for=__toc> <span class="md-nav__icon md-icon"></span> On this page </label> <ul class=md-nav__list data-md-component=toc data-md-scrollfix> <li class=md-nav__item> <a href=#prerequisites class=md-nav__link> <span class=md-ellipsis> Prerequisites🔗 </span> </a> </li> <li class=md-nav__item> <a href=#what-we-are-going-to-cover class=md-nav__link> <span class=md-ellipsis> What We Are Going To Cover🔗 </span> </a> </li> <li class=md-nav__item> <a href=#ensure-that-the-transfer-is-possible class=md-nav__link> <span class=md-ellipsis> Ensure that the transfer is possible🔗 </span> </a> <nav class=md-nav aria-label="Ensure that the transfer is possible🔗"> <ul class=md-nav__list> <li class=md-nav__item> <a href=#projects-must-be-on-the-same-cloud class=md-nav__link> <span class=md-ellipsis> Projects must be on the same cloud🔗 </span> </a> </li> </ul> </nav> </li> </ul> </nav> </div> </div> </div> <div class=md-content data-md-component=content> <article class="md-content__inner md-typeset"> <h1 id=how-to-move-data-volume-between-two-vms-using-openstack-horizon-on-3engines-cloud>How to move data volume between two VMs using OpenStack Horizon on 3Engines Cloud<a href=#how-to-move-data-volume-between-two-vms-using-openstack-horizon-on-brand-name title="Permalink to this headline">🔗</a><a class=headerlink href=#how-to-move-data-volume-between-two-vms-using-openstack-horizon-on-3engines-cloud title="Permanent link">¶</a></h1> <p>Volumes are used to store data and those data can be accessed from a virtual machine to which the volume is attached. To access data stored on a volume from another virtual machine, you need to disconnect that volume from virtual machine to which it is currently connected, and connect it to another instance.</p> <p>This article uses the Horizon dashboard to transfer volumes between virtual machines which are in the same project.</p> <h2 id=prerequisites>Prerequisites<a href=#prerequisites title="Permalink to this headline">🔗</a><a class=headerlink href=#prerequisites title="Permanent link">¶</a></h2> <p>No. 1 <strong>Hosting</strong></p> <p>You need a 3Engines Cloud hosting account with Horizon interface <a href=https://horizon.3Engines.com>https://horizon.3Engines.com</a>.</p> <p>No. 2 <strong>Source virtual machine and volume</strong></p> <p>We assume that you have a virtual machine (which we will call <em>source</em> virtual machine) to which a volume is attached.</p> <p>No. 3 <strong>Destination virtual machine</strong></p> <p>We also assume that you want to access the data stored on volume mentioned in Prerequisite No. 2 from another instance which is in the same project - we will call that instance <em>destination</em> virtual machine.</p> <h2 id=what-we-are-going-to-cover>What We Are Going To Cover<a href=#what-we-are-going-to-cover title="Permalink to this headline">🔗</a><a class=headerlink href=#what-we-are-going-to-cover title="Permanent link">¶</a></h2> <blockquote> <ul> <li> <p>Ensure that the transfer is possible</p> </li> <li> <p>Projects must be on the same cloud</p> </li> <li>Volume cannot be used for booting an operating system</li> <li>File system compatibility</li> <li>Making sure that the source virtual machine does not try to access the volume</li> <li>Other volume and instance conditions for successful transfer</li> <li>Shutting down the source virtual machine</li> <li>Shutting down the source virtual machine using Horizon dashboard</li> <li>Disconnecting volume</li> <li>Attaching volume to destination virtual machine</li> </ul> </blockquote> <p>Some parts of some screenshots in this article are greyed out for privacy reasons.</p> <h2 id=ensure-that-the-transfer-is-possible>Ensure that the transfer is possible<a href=#ensure-that-the-transfer-is-possible title="Permalink to this headline">🔗</a><a class=headerlink href=#ensure-that-the-transfer-is-possible title="Permanent link">¶</a></h2> <p>Before the actual transfer, you have to examine the state of the volume and of the instances and conclude whether the transfer is possible right away or should you perform other operations first:</p> <h3 id=projects-must-be-on-the-same-cloud>Projects must be on the same cloud<a href=#projects-must-be-on-the-same-cloud title="Permalink to this headline">🔗</a><a class=headerlink href=#projects-must-be-on-the-same-cloud title="Permanent link">¶</a></h3> <p>If the projects are not on the same cloud, do not use this article but see one of these articles instead:</p> </article> </div> <script>var 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