DaanHoogland commented on issue #3610: [WIP DO NOT MERGE] KVM: Rolling maintenance URL: https://github.com/apache/cloudstack/pull/3610#issuecomment-573745853 ... > > We have a similar application to perform all these tasks and also a centralized dashboard to control upgrading hypervisors on all platforms in a different locations. @ravening do you have this in public domain somewhere? > > Update: > Nvm, I went through the code and understood what its doing. It enables maintenance mode on each individual hypervisor. This can be really bad in most cases because in the worst case a VM can be migrated multiple times @ravening I cna safely say that at least all the VMs from the first host to be handled will be migrated multiple times. How is this bad? And how could this be avoided?
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