Re: [Qemu-devel] Re: [PATCH] virtio-blk: add SGI_IO passthru support

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Christoph Hellwig wrote:
Should we be handling some SCSI cmds internally to QEMU (like eject operations) and supporting media=cdrom in -drive for if=virtio?

Not quite yet.  Eventually I want to support a virtio-scsi kind of
transport which would use the same virtio-blk protocol but only send
scsi commands.  We'd need a different driver on the Linux side for
it that registers to the scsi layer.  On the QEMU side it could either
do pass-through to a real scsi device using SG_IO or use the existing
command scsi emulator in scsi-disk.c.

Ah, excellent. I think that's a great thing to do. So do you think virtio-scsi would deprecate virtio-blk?

I've gotten a number of requests for exposing stuff like VPD through virtio-blk. There's also a surprising amount of software out there that assumes /dev/sdX or /dev/hdX naming.

Regards,

Anthony Liguori
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