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Re: [RFC] [PATCH] SCSI passthrough for virtio-blk

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Am Freitag, 29. August 2008 schrieb Hannes Reinecke:
> So when using '-drive file=/dev/sgXX,if=virtio,format=host_device' you
> can happily call any sg_XX command on the resulting vdX device. Quite
> neat, methinks. And it's even backwards compatible, so each of these
> patches should work without the other one applied.

Does not work here. If the host does not support the pass-through, the device 
drivers waits for an response. I tried  sdparm /dev/vda with a patched kernel 
and an unpatched userspace.

I think you should use a feature bit to avoid problems.

Christian

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