On Thu, Mar 8, 2018 at 4:14 PM, [email protected] <[email protected]> wrote: > On 03/07/2018 09:02 PM, R0b0t1 wrote: > >> On Wed, Mar 7, 2018 at 7:52 PM, [email protected] <[email protected]> wrote: >>> >>> I bought a LSI-9211-8i / SAS 2008 controller which reports support for >>> SR-IOV in lspci and I am wondering how I can use it. >>> >>> There is no info on the internet about this not even for their newer >>> controllers where there is a lot of advertising about SR-IOV. >>> >>> The idea is that you can assign a RAID array, individual hard drive, etc >>> to >>> a VF which is then assigned to a VM via IOMMU providing better almost >>> native >>> performance vs emulated disks. >>> >>> Thanks! >> >> If it supports SR-IOV you can pass it to a guest with VFIO. If it did >> not support SR-IOV it would not support VFIO. > > I know - my question is how do I create the virtual functions and assign the > drives to them instead of simply attaching the entire controller? > > According to LSI's press release you could have for instance 5 different > RAID's assigned to 5 different VM's via virtual functions - not simply all > of them assign to one VM via assigning the controller like a non SR-IOV > device >
https://wiki.archlinux.org/index.php/PCI_passthrough_via_OVMF https://wiki.installgentoo.com/index.php/PCI_passthrough https://www.kernel.org/doc/Documentation/vfio.txt The one sticking point is that you need to figure out the layout of your PCIe lanes to share multiple devices without conflicts. Cheers, R0b0t1
