Re: Pe: [PATCH v5 1/3] virtio-scsi: first version

[Paolo Bonzini]

On 02/14/2012 02:11 AM, Michael S. Tsirkin wrote:
> On Tue, Feb 14, 2012 at 11:49:55AM +1100, ronnie sahlberg wrote:
> > By just exposing this device to the kernel, the kernel keeps sending,
> > or if not the kernel maybe some other process trying to poll the
> > status?
> >
> > every few seconds :
> > PREVENT_ALLOW_MEDIUM_REMOVAL  prevent removal
> > PREVENT_ALLOW_MEDIUM_REMOVAL  to immediatel change it back to allow
> > removal again
> > TEST_UNIT_READY
> >
> >
> > After I run this
> > mount /dev/sdd1 /mnt
> >
> > The kernel sends a single
> > PREVENT_ALLOW_MEDIUM_REMOVAL to prevent removal
> > then every few seconds a
> > TEST_UNIT_READY

Sorry to interrupt you again guys, but: the discussion started with 
virtio-blk hotplug and now we're talking about SCSI commands?  Sure 
somebody switched topic at some point :) and anyway this is irrelevant 
to what virtio-blk can/cannot do.

BTW, for virtio-scsi the spec provides a way to do hotplug and hotunplug 
without any polling, though it's not implemented yet in the driver.

Paolo
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