Il 15/03/2013 16:35, Peter Maydell ha scritto: > On 5 March 2013 00:44, Aurelien Jarno <aurel...@aurel32.net> wrote: >> On Tue, Mar 05, 2013 at 08:22:57AM +0800, Peter Maydell wrote: >>> What effect does this actually have on the user experience? >> >> The effect is that the user don't has to specify the interface type. >> Basically: >> >> -drive file=/path/to/file,if=sd >> can be replaced by >> -drive file=/path/to/file >> >> It means the user doesn't have to know the details of the machine to >> know how to attach a disk. Note that the user here can also be a script, >> which then becomes a bit simpler. > > I'm not convinced this is a good thing -- I think you should have > to know that you're attaching an SD card and not a hard disk, > because the performance is much worse. In particular if you > don't specify 'cache=writeback' your performance will be > dreadful, so you need to do something different from hard > disks anyhow.
cache=writeback has been the default for a few releases. Paolo
