I code, therefore I am --- On Wed, 10/20/10, David Ahern <dsahern@xxxxxxxxx> wrote: > From: David Ahern <dsahern@xxxxxxxxx> > Subject: Re: CD-ROM size not updated when switching CD-ROM images. > To: "Alex Davis" <alex14641@xxxxxxxxx> > Cc: "Stefan Hajnoczi" <stefanha@xxxxxxxxx>, kvm@xxxxxxxxxxxxxxx > Date: Wednesday, October 20, 2010, 12:44 PM > > > On 10/19/10 18:03, Alex Davis wrote: > > >> You ejected the CD-ROM on the QEMU side, the guest > doesn't > >> necessarily > >> know about the medium change. What happens > when you > >> use "eject > >> /dev/sr0" inside the guest instead? > > I get a 'no medium found' error from the 'dd..' > command. After > > going into the the monitor, ejecting and reloading the > disk, > > I still get the size of the first disk in the guest. > > As I recall the old data is coming from the host page > cache; it is not > seeing the media change. Try dropping the cache in the host > on a media > change (echo 3 > /proc/sys/vm/drop_caches) This had no effect. >or modify > qemu to close and > reopen the cdrom device. QEMU already does this. > David > > > >> > >> I don't know how CD-ROM media change works on > real > >> hardware, but that > >> is the behavior that QEMU should be following. > >> > >> Stefan > > > > > > > > -- > > To unsubscribe from this list: send the line > "unsubscribe kvm" in > > the body of a message to majordomo@xxxxxxxxxxxxxxx > > More majordomo info at http://vger.kernel.org/majordomo-info.html > > > -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
