Date: Wed, 2 Oct 2013 09:17:16 -0700 From: Craig Rodrigues <rodrigc@FreeBSD.org> To: "Abhishek Gupta (LIS)" <abgupta@microsoft.com> Cc: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Re: Disabling ATA driver for IDE devices on Hyper-V Message-ID: <CAG=rPVfUcdwOuPv5S7Cc9nK73myxT8JHbpmz6cK2x=xk-%2B=X2g@mail.gmail.com> In-Reply-To: <d148743cd43c43bd9c24c315d4632057@BL2PR03MB210.namprd03.prod.outlook.com> References: <d148743cd43c43bd9c24c315d4632057@BL2PR03MB210.namprd03.prod.outlook.com>
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Hi, There was some discussion between Larry Melia and Alexander Motin on this and related topics a few months ago. Here are some relevant threads: http://lists.freebsd.org/pipermail/freebsd-virtualization/2013-April/001180.html http://lists.freebsd.org/pipermail/freebsd-virtualization/2013-May/001281.html http://lists.freebsd.org/pipermail/freebsd-virtualization/2013-June/001297.html If you are continuing Larry's work, and can get feedback from Alexander, that would be great. -- Craig On Mon, Sep 30, 2013 at 2:02 PM, Abhishek Gupta (LIS) <abgupta@microsoft.com > wrote: > 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 > of? > > 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. > > Thanks, > Abhishek > > _______________________________________________ > freebsd-virtualization@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-virtualization > To unsubscribe, send any mail to " > freebsd-virtualization-unsubscribe@freebsd.org" >
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