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