Re: Disable scsi disk requests in QEMU when using virtio-blk device

[Thomas Huth]

On 18/07/2021 15.37, Arnabjyoti Kalita wrote:
> Hello all,
>
> Is it possible to disable scsi disk requests being generated by the
> guest when using a virtio-blk device?
>
> I am starting the guest in KVM mode using the below command line-
>
> sudo ./qemu-system-x86_64 -m 1024 --machine pc-i440fx-2.5 -cpu
> qemu64,-kvmclock,-kvm_pv_eoi
> -enable-kvm -netdev tap,id=tap1,ifname=tap0,script=no,downscript=no
> -device virtio-net-pci,netdev=tap1,mac=00:00:00:00:00:00 -object
> filter-replay,id=replay,netdev=tap1
> -drive 
> file=~/os_images_for_qemu/ubuntu-16.04-desktop-amd64.qcow2,format=qcow2,if=none,id=img-direct
> -device virtio-blk-pci,drive=img-direct

Try to replace the last line with:

 -device virtio-blk-pci,drive=img-direct,scsi=off

Generally, you can see a list of valid options for a device by running QEMU 
with something like:

 qemu-system-x86_64 -device virtio-blk-pci,help

 HTH,
  Thomas