On Thu, Nov 14, 2013 at 02:39:33AM -0500, Ayal Baron wrote: > > ----- Original Message ----- > > > Hello Itamar. > > > The specific use case is a particular propriety filesystem that needs to > > > see > > > a scsi device. It will do scsi inquiry conmmands to verify suitability. > > > In talking to the devs - of the filesystem - there is no way around it. > > > I'd > > > previously tried virtio-block - resulting in the /dev/vd* device - and the > > > filesystem would not work. > > > > > > From doing a bit of web searching it appears the kvm/qemu supports (or did > > > support) an emulated LSI scsi controller. My understanding is that the > > > various virtualization platforms will emulate a well supported device (by > > > the guest OSes) so that drivers are not an issue. For example this should > > > allow a VM on Vmware vsphere/vcenter to be exported to Ovirt and have it > > > boot up. The potential for further optimising the guest is there by > > > installing ovirt/qemu/kvm guest utils that then allow the guest OS to > > > understand the virtio nic and scsi devices. The guest could then be shut > > > down, the nic and scsi controller changed and the guest booted up again. > > > You can do the same thing in the Vmware world by installing their guest > > > tools, shutting down the guest VM, then reconfiguring it with a vmxnet3 > > > nic > > > and pvscsi scsi adapter, then booting up again. > > > It does seem somewhat inconsistent in Ovirt that we allow a choice of > > > Intel > > > e1000 or virtio nics, but do not offer any choice with the scsi adapter. > > > > virtio-scsi support was just recently added to oVirt to allow for scsi > > passthrough and improved performance over virtio-blk. > > I believe the emulated scsi device in qemu never matured enough but possibly > > Stefan (cc'd) can correct me here.
The only supported emulated SCSI HBA device is virtio-scsi. It was Tech Preview in RHEL 6.3 and became fully supported in RHEL 6.4. virtio-scsi is not available in RHEL 5. Stefan _______________________________________________ Users mailing list Users@ovirt.org http://lists.ovirt.org/mailman/listinfo/users