weizhouapache commented on issue #3720: VM stopped/crashing while Migration with Maintenance Mode (KVM) URL: https://github.com/apache/cloudstack/issues/3720#issuecomment-558986632 @svenvogel @andrijapanicsb I think @andrijapanicsb 's suggestion is good. Suppose we have a new parameter forceMaintenance in the command (1) if there are vms running on the host. if there is no any other server in Up status and Enabled state in the cluster (1.1) if forceMaintenance = true, stop all vms (1.2) if forceMaintenance = false, throw exception, host is put to ErrorInMaintenance or Up status. (2) if there are other servers in the cluster, all vms will be migrated away from the host (2.1) if all vm migrations succeed, then host is put to Maintenance. (2.2) if vm migration failed, then try to migrate vm to another host . If vm migration failed after 5 times (this can be configured)), then (2.2.1) if forceMaintenance = true, schedule a task to stop/start the vm. (2.2.2) if forceMaintenance = false, throw exception, host is put to ErrorInMaintenance. any suggestion ?
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