projects / mirror_qemu.git / blame
| Commit | Line | Data |
|---|---|---|
| 0f58f68b GH |
1 | |
| 2 | qemu usb storage emulation | |
| 3 | -------------------------- | |
| 4 | ||
| 43ffe61f | 5 | QEMU has two emulations for usb storage devices. |
| 0f58f68b GH |
6 | |
| 7 | Number one emulates the classic bulk-only transport protocol which is | |
| 8 | used by 99% of the usb sticks on the marked today and is called | |
| 9 | "usb-storage". Usage (hooking up to xhci, other host controllers work | |
| 10 | too): | |
| 11 | ||
| 12 | qemu ${other_vm_args} \ | |
| 13 | -drive if=none,id=stick,file=/path/to/file.img \ | |
| 14 | -device nec-usb-xhci,id=xhci \ | |
| 15 | -device usb-storage,bus=xhci.0,drive=stick | |
| 16 | ||
| 17 | ||
| 18 | Number two is the newer usb attached scsi transport. This one doesn't | |
| 19 | automagically create a scsi disk, so you have to explicitly attach one | |
| 20 | manually. Multiple logical units are supported. Here is an example | |
| 21 | with tree logical units: | |
| 22 | ||
| 23 | qemu ${other_vm_args} \ | |
| 24 | -drive if=none,id=uas-disk1,file=/path/to/file1.img \ | |
| 25 | -drive if=none,id=uas-disk2,file=/path/to/file2.img \ | |
| 26 | -drive if=none,id=uas-cdrom,media=cdrom,file=/path/to/image.iso \ | |
| 27 | -device nec-usb-xhci,id=xhci \ | |
| 28 | -device usb-uas,id=uas,bus=xhci.0 \ | |
| 29 | -device scsi-hd,bus=uas.0,scsi-id=0,lun=0,drive=uas-disk1 \ | |
| 30 | -device scsi-hd,bus=uas.0,scsi-id=0,lun=1,drive=uas-disk2 \ | |
| 31 | -device scsi-cd,bus=uas.0,scsi-id=0,lun=5,drive=uas-cdrom | |
| 32 | ||
| 33 | ||
| 34 | enjoy, | |
| 35 | Gerd | |
| 36 | ||
| 37 | -- | |
| 38 | Gerd Hoffmann <kraxel@redhat.com> |