> The qemu-kvm could boot from SCSI disk image by utilizing seabios, this
> patch ported codes
> from qemu-kvm to let upstream qemu to support booting from SCSI disk image.

No. This has nothing to do with SCSI.

What it does is add a really cheap and nasty block storage device that aliases 
one of the other block devices in the system. This is bad. The OS has no way 
of knowing which devices are aliased, and we really don't want yet another 
braindead guest visible interface (c.f. recent performance issues where -
kernel/fw_cfg were being abused)

This has been discussed several times before. The proper solution is to teach 
the bios how to boot off SCSI devices. IIRC support for virtio devices already 
exists, implementing support for the SCSI controller shouldn't be that much 
harder.

Paul

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