harikrishna-patnala opened a new issue, #12535:
URL: https://github.com/apache/cloudstack/issues/12535

   ### problem
   
   Adding this issue based on @rajujith 's comment here 
https://github.com/apache/cloudstack/pull/12414#issuecomment-3776410665
   
   When setting machine type q35 in "kvm.guest.os.machine.type", the option 
added is passed to KVM but its not useful in the use case yet due to incorrect 
controller type set for q35 machine type:
   
   ` [resource.wrapper.LibvirtStartCommandWrapper] (AgentRequest-Handler-2:[]) 
(logid:feb005a8) LibvirtException org.libvirt.LibvirtException: unsupported 
configuration: IDE controllers are unsupported for this QEMU binary or machine 
type at org.libvirt.ErrorHandler.processError(Unknown Source) at 
org.libvirt.ErrorHandler.processError(Unknown Source) at 
org.libvirt.Connect.domainCreateXML(Unknown Source) at 
com.cloud.hypervisor.kvm.resource.LibvirtComputingResource.startVM(LibvirtComputingResource.java:2241)`
   
   ```
   <type arch='x86_64' machine='pc-q35-rhel9.6.0'>hvm</type>
   
   --
   --
   <disk device='cdrom' type='file'>
     <driver name='qemu' type='raw' />
     <source file=''/>
     <target dev='hdc' bus='ide'/>
   </disk>
   ```
   
   The rootDiskController is set to "scsi".
   
   
   
   
   ### versions
   
   The versions of ACS, hypervisors, storage, network etc..
   
   ### The steps to reproduce the bug
   
   _No response_
   
   ### What to do about it?
   
   @rajujith please add your comment, if you think there is a way to address 
issue.


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