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