rajujith opened a new issue, #13484:
URL: https://github.com/apache/cloudstack/issues/13484

   ### problem
   
   With the Q35 machine type, which is the default on many recent libvirt 
versions or set intentionally per VM/template as per the requirements attaching 
4th volume (3rd data volume) fails for running VM. It can be attached to a 
stopped VM.
   
   Error: 
   
   Failed to attach volume vol4 to VM scsi-3; org.libvirt.LibvirtException: XML 
error: target 'sde' duplicated for disk sources 
'/mnt/f18be102-4fc9-36c8-a322-02b8e9674714/i-2-1936-VM.iso' and 
'/mnt/b75b9349-4d30-30dd-84ca-1de657c42cbf/30078d45-68d2-4e9b-ae53-16e49e73c795'
   
   
   ### versions
   
   4.22.1
   
   ### The steps to reproduce the bug
   
   1. Create an L2 guest network with the offering 
'DefaultL2NetworkOfferingConfigDrive'
   2. Register two templates with the following template settings
       rootDiskController:scsi, 
kvm.guest.os.machine.type:pc-q35-rhel9.6.0,UEFI=LEGACY
       rootDiskController:virtio, 
kvm.guest.os.machine.type:pc-q35-rhel9.6.0,UEFI=LEGACY
   5. Deploy an instance in the L2 network using each template , attach 3 data 
volumes, 4th one fails to attach.
   
   
   ### What to do about it?
   
   Allow attaching the 4th volume. 


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