Hello Everybody,<div><br></div><div>I have got a very simple (and probably basic) question.</div><div><br></div><div>What are the best practices when updating the "operation system" where I have a DRBD volume?</div>
<div><br></div><div>Here is the map of my servers:</div><div><ul><li>Linux (CentOS 5.8)-- this is my <b>primary</b> server, which the DRBD tools installed in</li><ul><li>OpenFiler (this is my <b>primary</b> hot-swapable storage unit)</li>
</ul></ul></div><div><div><ul><li>Linux (CentOS 5.8)-- this is my <b>secondary</b> server, which the DRBD tools installed in</li><ul><li>OpenFiler (this is my <b>secondary</b> hot-swapable storage unit)</li></ul></ul><div>
Each Linux server mounts the volume from his related OpenFiler unit through iscsi, and then I use DRBD to mirror them. It's working perfectly now.</div></div></div><div><br></div><div>I had to do some maintenance a couple of months ago, updating the CentOS from 5.2 to 5.8, which was very straightforward. Then I updated the DRBD from 8.2.6 to 8.3.12, which was pretty good as well.</div>
<div><br></div><div>Now I need to update the operational system, from CentOS 5.8 to CentOS 6.2, and I can't do it as a simple software update (since CentOS doesn't support such a feature). That said, I will have to reinstall to SO on the servers (I'm not touching the storage units, though).</div>
<div><br></div><div>What would be a best practice in this case, in order to "replace" these servers and keep the storage units the way they are now? I wish I could simply reinstall the OS, remap the units, configure DRBD and sync, but I want to know what is the golden path to do so.</div>
<div><br></div><div>Thanks,</div><div>Marcelo</div>