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<p class="MsoNormal">Am I to understand this correctly but we have to “Delete” a volume in order to re-Create it with a new replica count?
<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What I am trying to do is increase the replica count so that two of my Bricks are on two separate nodes in one datacenter, then having another brick on a node in a separate datacenter linked via a 40GB dedicated Fiber line that links the
two sites (ie DR). <o:p></o:p></p>
<p class="MsoNormal">Or would a Distributed-Replica count 2 be a better choice, then replicate a brick between the two datacenters?
<o:p></o:p></p>
<p class="MsoNormal">Most if not All of our Load is at one site.. but if we lose that site we have a HOT standby available… slower yet available.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">I’d like to have two servers in each datacenter with two bricks each so that we can expand accordingly. Suggestions? High Availability is the key.. not speed or IOPs<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What does this do to the system? <o:p></o:p></p>
<p class="MsoNormal">Data loss? <o:p></o:p></p>
<p class="MsoNormal">Obviously the Storage would not be available during this time.<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">What happens to the Data that already exists on a Two Node (2 Bricks per node) Distributed-Replica of 2<o:p></o:p></p>
<p class="MsoNormal">How does the system then increase the replica count?<o:p></o:p></p>
<p class="MsoNormal">Do I have to rebalance the Volume when complete?<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">Server1 and Server2 are in the same location<o:p></o:p></p>
<p class="MsoNormal">Server3 and Future Server 4 are in the same location<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">As Reference I am following: https://github.com/GlusterFS/Notes<o:p></o:p></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><b><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Extend volume for replica count<o:p></o:p></span></b></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Stop volume www:
</span><span style="font-size:10.0pt;font-family:"Courier New"">gluster volume stop www</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> Delete volume www:
</span><span style="font-size:10.0pt;font-family:"Courier New"">gluster volume delete www</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> Recreate volume but increase replica count to 4 and define all four bricks:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">gluster volume create www replica 4 transport tcp server1:/var/export/www server2:/var/export/www server3:/var/export/www server4:/var/export/www<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Start volume www and set options:<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">gluster volume start www<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Courier New"">gluster volume set www auth.allow 192.168.56.*<o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span style="font-size:12.0pt;font-family:"Times New Roman","serif"">Check volume status:
</span><span style="font-size:10.0pt;font-family:"Courier New"">gluster volume info www</span><span style="font-size:12.0pt;font-family:"Times New Roman","serif""> Volume data should become available again.<o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal">My CURRENT CONFIG:<o:p></o:p></p>
<p class="MsoNormal">Volume Name: storage1<o:p></o:p></p>
<p class="MsoNormal">Type: Distributed-Replicate<o:p></o:p></p>
<p class="MsoNormal">Volume ID: 9616ce42-48bd-4fe3-883f-decd6c4fcd00<o:p></o:p></p>
<p class="MsoNormal">Status: Started<o:p></o:p></p>
<p class="MsoNormal">Number of Bricks: 3 x 2 = 6<o:p></o:p></p>
<p class="MsoNormal">Transport-type: tcp<o:p></o:p></p>
<p class="MsoNormal">Bricks:<o:p></o:p></p>
<p class="MsoNormal">Brick1: evtgls1:/exp/br01/brick1<o:p></o:p></p>
<p class="MsoNormal">Brick2: evtgls2:/exp/br01/brick1<o:p></o:p></p>
<p class="MsoNormal">Brick3: seagls1:/exp/br02/brick2<o:p></o:p></p>
<p class="MsoNormal">Brick4: evtgls2:/exp/br02/brick2<o:p></o:p></p>
<p class="MsoNormal">Brick5: seagls1:/exp/br01/brick1<o:p></o:p></p>
<p class="MsoNormal">Brick6: evtgls1:/exp/br02/brick2<o:p></o:p></p>
<p class="MsoNormal">Options Reconfigured:<o:p></o:p></p>
<p class="MsoNormal">diagnostics.brick-log-level: WARNING<o:p></o:p></p>
<p class="MsoNormal">diagnostics.client-log-level: WARNING<o:p></o:p></p>
<p class="MsoNormal">cluster.entry-self-heal: off<o:p></o:p></p>
<p class="MsoNormal">cluster.data-self-heal: off<o:p></o:p></p>
<p class="MsoNormal">cluster.metadata-self-heal: off<o:p></o:p></p>
<p class="MsoNormal">performance.cache-size: 1024MB<o:p></o:p></p>
<p class="MsoNormal">performance.cache-max-file-size: 2MB<o:p></o:p></p>
<p class="MsoNormal">performance.cache-refresh-timeout: 1<o:p></o:p></p>
<p class="MsoNormal">performance.stat-prefetch: off<o:p></o:p></p>
<p class="MsoNormal">performance.read-ahead: on<o:p></o:p></p>
<p class="MsoNormal">performance.quick-read: off<o:p></o:p></p>
<p class="MsoNormal">performance.write-behind-window-size: 4MB<o:p></o:p></p>
<p class="MsoNormal">performance.flush-behind: on<o:p></o:p></p>
<p class="MsoNormal">performance.write-behind: on<o:p></o:p></p>
<p class="MsoNormal">performance.io-thread-count: 32<o:p></o:p></p>
<p class="MsoNormal">performance.io-cache: on<o:p></o:p></p>
<p class="MsoNormal">network.ping-timeout: 2<o:p></o:p></p>
<p class="MsoNormal">nfs.addr-namelookup: off<o:p></o:p></p>
<p class="MsoNormal">performance.strict-write-ordering: on<o:p></o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><span style="font-family:"Cambria","serif";color:gray">Thomas Holkenbrink
<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Cambria","serif";color:gray">Systems Architect<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-family:"Cambria","serif";color:gray">FiberCloud Inc. |
<a href="http://www.fibercloud.com/"><span style="color:gray">www.fibercloud.com</span></a><o:p></o:p></span></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
<p class="MsoNormal"><o:p> </o:p></p>
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