Date: Mon, 30 Sep 2013 21:02:58 +0000 From: "Abhishek Gupta (LIS)" <abgupta@microsoft.com> To: "freebsd-virtualization@freebsd.org" <freebsd-virtualization@freebsd.org> Subject: Disabling ATA driver for IDE devices on Hyper-V Message-ID: <d148743cd43c43bd9c24c315d4632057@BL2PR03MB210.namprd03.prod.outlook.com>
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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 suggestio= ns 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 m= anage CDROMs. What we would like to do is disable the ATA driver for all de= vice 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 p= ut in selective disabling? b) Is this a good approach? Is there something cleaner you can think o= f? As of now we have implemented a disengage driver that disables ATA driver p= ermanently on Hyper-V. However this is less than desirable and we are looki= ng for a better solution. Please let us know if you have some thoughts. Thanks, Abhishek
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