Am 24.01.2014 um 14:56 hat Paolo Bonzini geschrieben: > From: Peter Maydell <peter.mayd...@linaro.org> > > libcurl versions 7.16.0 and later have a timer callback interface which > must be implemented in order for libcurl to make forward progress (it > will sometimes rely on being called back on the timeout if there are > no file descriptors registered). Implement the callback, and use a > QEMU AIO timer to ensure we prod libcurl again when it asks us to. > > Based on Peter's original patch plus my fix to add curl_multi_timeout_do. > Should compile just fine even on older versions of libcurl. > > I also tried copy-on-read and streaming: > > $ ./qemu-img create -f qcow2 -o \ > > backing_file=http://download.fedoraproject.org/pub/fedora/linux/releases/20/Live/x86_64/Fedora-Live-Desktop-x86_64-20-1.iso > \ > foo.qcow2 1G > $ x86_64-softmmu/qemu-system-x86_64 \ > -drive if=none,file=foo.qcow2,copy-on-read=on,id=cd \ > -device ide-cd,drive=cd --enable-kvm -m 1024 > > Direct http usage is probably too slow, but with copy-on-read ultimately > the image does boot! > > After some time, streaming gets canceled by an EIO, which needs further > investigation. > > Signed-off-by: Peter Maydell <peter.mayd...@linaro.org> > Signed-off-by: Paolo Bonzini <pbonz...@redhat.com>
Thanks, applied to the block branch. Kevin
