There was some discussion between Larry Melia and Alexander Motin
on this and related topics a few months ago. Here are some relevant
If you are continuing Larry's work, and can get feedback from
Alexander, that would be great.
On Mon, Sep 30, 2013 at 2:02 PM, Abhishek Gupta (LIS) <abgu...@microsoft.com
> Hi folks,
> This may have been asked before but the solution we have currently is less
> than ideal. Please bear with me on the repetition and provide any
> suggestions you may have.
> One of the issues with Hyper-V is that it does not virtualize the CD
> device and therefore we rely on the ATA driver in the guest operating
> system to manage CDROMs. What we would like to do is disable the ATA driver
> for all device types except the CDROM in the presence of Hyper-V. Can
> someone help us in answering the following in this regard:
> a) What is the correct location in the FreeBSD ATA code where we can
> put in selective disabling?
> b) Is this a good approach? Is there something cleaner you can think
> As of now we have implemented a disengage driver that disables ATA driver
> permanently on Hyper-V. However this is less than desirable and we are
> looking for a better solution. Please let us know if you have some thoughts.
> firstname.lastname@example.org mailing list
> To unsubscribe, send any mail to "
email@example.com mailing list
To unsubscribe, send any mail to