How to set root disk controller for KVM

[bhouse-nexthop]

I see in the global settings its possible to set the vmware root disk controller type. But I don't see an equivalent for KVM. How is this set?

I also am not seeing it when inspecting the VM settings in the UI.

I can see in a booted linux VM that it shows it is using virtio-blk, however. I would like to be able to test virtio-scsi.

[bernardodemarco]

Hello, @bhouse-nexthop

With KVM, the root disk controller can be defined per template and overridden for individuals VMs. For templates, it can be configured in the Settings tab of the template details page:

VMs inherit the configuration from the template, but the setting can be modified at the VM level. For that, the VMs must be in the Stopped state:

It is important to note that the screenshots above were taken using a root admin account. There are two global settings that manage end-user access to VM settings:

• user.vm.denied.details: Determines which VM settings are hidden from users.
• user.vm.readonly.details: Determines which VM settings are read-only for users.

Therefore, to allow end-users to view the root disk controller of their VMs, rootDiskController must not be listed in user.vm.denied.details. Similarly, to allow users to edit this value, it must not be listed in both global settings.

Hope it helps :),
Bernardo De Marco Gonçalves

[bradh352]

Is there any way to set a global default for any newly created vms or templates? I do see it now if you know the key to use to add to settings, thanks!

[bernardodemarco]

As far as I know, it's only possible to define the root disk controller globally for VMware. However, we can create an issue to add a similar setting for KVM as well.