On Thu, 2011-10-27 at 17:14 +0100, Daniel Castro wrote:
I am connecting my front and back for a block device. I have collected from xenstore sectors, sector-size. But I also need: u16 heads; // # heads u16 cylinders; // # cylinders u16 spt; // # sectors / track I guess from the SeaBIOS perspective they are required, but from the xen perspective how can I get them? pure math/translation?
CHS is rather historical and has no real relevance to a virtual device. You can basically just make them up to fit the underlying device size, take a look at blkif_getgeo in Linux for example.