[SeaBIOS] Seabios can only detect one disk when two disks are attached to one scsi controller

[fengyd]

Hi,

Two disks are configured and attached to on scsi controller, but only on
disk can be detected by  seabios.

</disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source
dev='/dev/disk/by-path/ip-192.168.13.7:3260-iscsi-iqn.2010-10.org.openstack:volume-7b894c9d-fe25-4ee4-96fa-2b5947f7758f-lun-0'/>
      <target dev='sda' bus='scsi'/>
      <serial>7b894c9d-fe25-4ee4-96fa-2b5947f7758f</serial>
      <address type='drive' controller='0' bus='0' target='0' unit='0'/>
    </disk>
    <disk type='block' device='disk'>
      <driver name='qemu' type='raw' cache='none' io='native'/>
      <source
dev='/dev/disk/by-path/ip-192.168.13.7:3260-iscsi-iqn.2010-10.org.openstack:volume-6d75e7b8-39b2-4209-9fe9-b2de953a7e01-lun-0'/>
      <target dev='sdb' bus='scsi'/>
      <serial>6d75e7b8-39b2-4209-9fe9-b2de953a7e01</serial>
      <address type='drive' controller='0' bus='0' target='0' unit='1'/>
    </disk>
    <controller type='usb' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x01'
function='0x2'/>
    </controller>
    <controller type='pci' index='0' model='pci-root'/>
    <controller type='scsi' index='0'>
      <address type='pci' domain='0x0000' bus='0x00' slot='0x08'
function='0x0'/>
    </controller>

Could you help check it?

Thanks in advance.

BR.
Yafeng