| |
| qemu usb storage emulation |
| -------------------------- |
| |
| QEMU has two emulations for usb storage devices. |
| |
| Number one emulates the classic bulk-only transport protocol which is |
| used by 99% of the usb sticks on the marked today and is called |
| "usb-storage". Usage (hooking up to xhci, other host controllers work |
| too): |
| |
| qemu ${other_vm_args} \ |
| -drive if=none,id=stick,file=/path/to/file.img \ |
| -device nec-usb-xhci,id=xhci \ |
| -device usb-storage,bus=xhci.0,drive=stick |
| |
| |
| Number two is the newer usb attached scsi transport. This one doesn't |
| automagically create a scsi disk, so you have to explicitly attach one |
| manually. Multiple logical units are supported. Here is an example |
| with tree logical units: |
| |
| qemu ${other_vm_args} \ |
| -drive if=none,id=uas-disk1,file=/path/to/file1.img \ |
| -drive if=none,id=uas-disk2,file=/path/to/file2.img \ |
| -drive if=none,id=uas-cdrom,media=cdrom,file=/path/to/image.iso \ |
| -device nec-usb-xhci,id=xhci \ |
| -device usb-uas,id=uas,bus=xhci.0 \ |
| -device scsi-hd,bus=uas.0,scsi-id=0,lun=0,drive=uas-disk1 \ |
| -device scsi-hd,bus=uas.0,scsi-id=0,lun=1,drive=uas-disk2 \ |
| -device scsi-cd,bus=uas.0,scsi-id=0,lun=5,drive=uas-cdrom |
| |
| |
| enjoy, |
| Gerd |
| |
| -- |
| Gerd Hoffmann <kraxel@redhat.com> |
