Re: [Qemu-devel] QEMU not honouring bootorder

[Michal Privoznik <mprivozn@redhat.com>]

On 12/11/2017 12:41 PM, Fam Zheng wrote:
> On Thu, 12/07 13:10, Michal Privoznik wrote:
>> Dear list,
>>
>> I've encountered the following problem. I have two disks:
>>
>>   /var/lib/libvirt/images/fedora.qcow2  (which contains OS)
>>   /dev/sde (iSCSI dummy disk just for testing)
>>
>> Now, when I configure QEMU to start with both of them, QEMU/Seabios
>> tries to boot from /dev/sde which fails obviously. Even setting
>> bootorder does not help. Here's my command line:
>>
>>   qemu-system-x86_64 \
>>   -boot menu=on,strict=on \
>>   -device lsi,id=scsi0,bus=pci.0 \
>>   -drive file=/var/lib/libvirt/images/fedora.qcow2,format=qcow2,if=none,id=drive-scsi0 \
>>   -device scsi-hd,bus=scsi0.0,drive=drive-scsi0,bootindex=1 \
>>   -drive file=/dev/sde,format=raw,if=none,id=drive-scsi1 \
>>   -device scsi-block,bus=scsi0.0,drive=drive-scsi1,bootindex=2
>>
>> It was found that if 'drive-scsi1' is scsi-hd instead of scsi-block
>> everything works as expected and I can boot my guest successfully.
> 
> Does it help if you add SCSI level ordering with "lun={0,1},channel=0,scsi-id=0"
> for both devices?

Setting lun helps. On the other hand, I had to change from LSI
controller to virtio-scsi as LSI doesn't support more than 1 LUNs.

Michal