On Mon, 2009-04-13 at 08:10 -0700, Linus Torvalds wrote: > On Mon, 13 Apr 2009, Avi Kivity wrote: > > > Of course, the _really_ conclusive thing (in a virtualized environment) is > > > to just make the virtual disk only able to do 16kB IO accesses (and with > > > 16kB alignment). IOW, actually emulate a disk with a 16kB hard sector size, > > > and reporting a 16kB sector size to the READ CAPACITY command. If it works > > > then, then clearly WNT has no issues with bigger sectors. > > > > I don't think IDE supports this? And Windows 2008 doesn't like the LSI > > emulated device we expose. > > Yeah, you'd have to have the OS use the SCSI commands for disk discovery, > so at least a SATA interface. With IDE disks, the sector size always has > to be 512 bytes, I think. Actually, the latest ATA rev supports different sector sizes in preparation for native 4k sector size SATA disks (words 117-118 of IDENTIFY). Matthew Wilcox already has the patches for libata ready. James -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
