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Re: [libvirt-users] This QEMU doesn't support the LSI 53C895A SCSI controller



On Sat, 2018-09-29 at 15:02 +0200, Gionatan Danti wrote:
> Hi all,
> trying to edit a domain xml to enable an LSI SCSI controller I get the 
> following error:
> 
> error: unsupported configuration: This QEMU doesn't support the LSI 
> 53C895A SCSI controller
> 
> It is my understanding that the error is raised due to RedHat disabling 
> this controller in its own qemu-kvm builds. This seems an unfortunate 
> decision, as it makes harder to migrate from VMWare (which uses LSI SCSI 
> and SAS adapters) to RH+KVM.
> 
> Can anyone elaborate on this decision? It is possible to enable LSI 
> controller support in RedHat 7.x? Should I open a BZ against it?

Your assessment looks correct, and the controller is indeed compiled
out downstream. Filing a BZ sounds like a reasonable next step, but
you might also want to investigate virt-v2v, which I believe will
take care of switching to the more performant virtio-scsi (including
installing the necessary drivers) for you when moving guests off
VMware.

-- 
Andrea Bolognani / Red Hat / Virtualization


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