Well, we are using active/active because we have configured Automatic High Availability as well as live migration... But could force it to be managed by hand if no other alternative exists...<div><br></div><div>Thanks!,</div>
<div><br></div><div>Jose.<br><br><div class="gmail_quote">El 9 de febrero de 2012 19:39, José Román Bilbao <span dir="ltr"><<a href="mailto:jrbcast@gmail.com">jrbcast@gmail.com</a>></span> escribió:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
<div>Hi all,</div><div> </div><div>We have this scenario:</div><div> </div><div>- A datacenter</div><div> - 1 Server running kvm VMs:</div><div> * 1 Openfiler to distribute hard disk to other VMs (stores VMs and VMs's data) and other uses</div>
<div> * Other VMs...</div><div> - DRBD configured to replicate Openfiler's volumes as primary</div><div> </div><div>- B datacenter</div><div> - 1 Server running kvm as backup for center A failure events</div><div>
- DRBD configured to serve as backup of Openfiler so VMs can be restarted in case of failure with updated data. It also works as primary. </div><div> </div><div>Both centers are connected through wireless connections (500 Mb/s) which is good for our requirements. Nevertheless, there is a ping of 300 ms because of multiple routers in whithin...</div>
<div> </div><div>We have been experiencing multiple split-brain situations and we don't know why... perhaps the link is down for a while but I don't understand the source of the problem as although they are primary-primary, one of the servers should never write to disk as all machines are kept on datacenter A, is this assumption right?, is this split-brain just "conceptual" telling that network was lost but no real uncoherences have appeared?. Under such asumption.. would it be ok to apply autorecover?.</div>
<div> </div><div>Any light on all this?, any alternatives?, any experience under such scenario?.</div><div> </div><div>Thanks in advance, </div><div> </div><div>Jose</div>
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