<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class="">Dear Users,</div><div class=""><br class=""></div><div class="">just one year ago, we implemented a tier2 storage based on GlusterFS v.3.10.5 and we can say that it works like a charm.</div><div class="">The GlusterFS volume has been created using 3 physical servers (each server contains 12 disks, 1 brick per disk).</div><div class=""> </div><div class="">Below, you can find some information about the gluster volume type</div><div class=""><br class=""></div><div class="">Volume Name: tier2</div><div class="">Type: Distributed-Disperse</div><div class="">Volume ID: a28d88c5-3295-4e35-98d4-210b3af9358c</div><div class="">Status: Started</div><div class="">Snapshot Count: 0</div><div class="">Number of Bricks: 6 x (4 + 2) = 36</div><div class="">Transport-type: tcp </div><div class=""><br class=""></div><div class="">Now, it's time to expand this volume so we bought 3 new servers similar to the 3 existing servers. Since we would like to upgrade the Gluster version to last available one, we would like to know if the following action plan is correct and safe:</div><div class=""><br class=""></div><div class="">1) creation of a new gluster distributed disperse volume (6x(4+2)) using the 3 new servers and the new gluster version;</div><div class="">2) copy of all the data saved on the old gluster volume to the new one;</div><div class="">3) complete erasure of three old servers operating system;</div><div class="">4) installation of the last available version of the operating system and glusterfs software stack on the three old servers;</div><div class="">5) expansion of the volume (created at point nr.1) adding the new bricks (created at point nr.4)</div><div class=""><br class=""></div><div class="">If our action plan can be considered "validated", I have an other question:</div><div class=""><br class=""></div><div class="">- in order to copy the data from the old volume to the new one, I need a third machine that can mount both the volumes; it's possible? if yes, which gluster client version should I use/install on the "bridge" machine?</div><div class=""><br class=""></div><div class="">Thank you very much for your attention.</div><div class="">Regards,</div><div class="">Mauro</div><div class="">
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