Description of problem:

The qemu monitor system_powerdown command no longer has any effect in qemu 2.1 in Fedora 21.

Version-Release number of selected component (if applicable):

qemu-2.1.0-4.fc21.x86_64

How reproducible:

Every time

Steps to Reproduce:

 * Download images
$ mkdir test
$ cd test
$ wget http://files.cockpit-project.org/testdata/images/cockpit-fedora-20-x86_64-root.xz
$ wget http://files.cockpit-project.org/testdata/images/cockpit-fedora-20-x86_64-initrd.xz
$ wget wget http://files.cockpit-project.org/testdata/images/cockpit-fedora-20-x86_64-kernel.xz
$ xz -d *.xz

 * Run the system
$ /usr/bin/qemu-system-x86_64 -machine accel=kvm -m 1024 -drive if=virtio,file=$PWD/cockpit-fedora-20-x86_64-root,index=0,serial=ROOT,snapshot=on -kernel $PWD/cockpit-fedora-20-x86_64-kernel -initrd $PWD/cockpit-fedora-20-x86_64-initrd -append "root=/dev/vda console=ttyS0 quiet enforcing=0" -nographic -monitor unix:path=$PWD/cockpit.mon,server,nowait

 * Wait for the VM to boot
 * In another terminal, run the system_powerdown command in the qemu monitor:
$ cd test
$ nc -U cockpit.mon
QEMU 2.1.0 monitor - type 'help' for more information
(qemu) system_powerdown

Actual results:

No effect on the running VM.

Expected results:

The VM shuld proceed to shutdown (as if an ACPI power button had been pressed). This happened in qemu 1.6.x. The exit code should be zero.

Additional info:

The above test case works well on Fedora 20 with identical images, with qemu-1.6.2-7 and similar.