weizhouapache commented on issue #3720: VM stopped/crashing while Migration with Maintenance Mode (KVM) URL: https://github.com/apache/cloudstack/issues/3720#issuecomment-559039297 > @ustcweizhou @andrijapanicsb i think this sounds good. > > one question. > > > (2.2.1) if forceMaintenance = true, schedule a task to stop/start the vm. > > @ustcweizhou why we should stop and start them? > @svenvogel if vm cannot be migrated after 5 times, to continue with the maintenance (because forceMaintenance is true), we need to stop it and start it on another server. make sense ? > additional we encounter the following problem. > > 1. iso could not be mounted or storage pool on destination host, i dont know why this is a problem, manually mounting was no problem. maybe anyone has information about that? yes, it is one root cause of failed migration. > 2. if QEMU or Host Version version are different machine type will change the flags `<type arch='x86_64' machine='pc-i440fx-rhel7.6.0'>hvm</type>` > i think this should be on view of the infrastructure admin. If hosts have different cpu model or qemu version, they should use custom cpu or cpu flags. It is not an issue in my point of view.
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