libvirt/tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.args

LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \
/usr/bin/qemu \
-S -M pc -m 214 -smp 1 -nographic -nodefaults \
-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \
-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \
-object rng-random,id=rng0,filename=/dev/hwrng \
-device virtio-rng-pci,rng=rng0,max-bytes=123,period=1234,bus=pci.0,addr=0x4
qemu: Set QEMU_AUDIO_DRV=none with -nographic On my machine, a guest fails to boot if it has a sound card, but not graphical device/display is configured, because pulseaudio fails to initialize since it can't access $HOME. A workaround is removing the audio device, however on ARM boards there isn't any option to do that, so -nographic always fails. Set QEMU_AUDIO_DRV=none if no <graphics> are configured. Unfortunately this has massive test suite fallout. Add a qemu.conf parameter nographics_allow_host_audio, that if enabled will pass through QEMU_AUDIO_DRV from sysconfig (similar to vnc_allow_host_audio) 2013-08-17 19:30:47 +00:00			`LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test QEMU_AUDIO_DRV=none \`
			`/usr/bin/qemu \`
tests: Test XML entities in source path for RNG device Users may want to specify XML entities in paths to devices. Ensure they are parsed and used properly. 2013-02-25 22:18:44 +00:00			`-S -M pc -m 214 -smp 1 -nographic -nodefaults \`
			`-monitor unix:/tmp/test-monitor,server,nowait -no-acpi -boot c -usb \`
			`-device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x3 \`
rng: restrict passthrough names to known-good files There is some controversy[1] on the qemu list on whether qemu should have ever allowed arbitrary file name passthrough, or whether it should be restricted to JUST /dev/random and /dev/hwrng. It is always easier to add support for additional filenames than it is to remove support for something once released, so this patch restricts libvirt 1.0.3 (where the virtio-random backend was first supported) to just the two uncontroversial names, letting us defer to a later date any decision on whether supporting arbitrary files makes sense. Additionally, since qemu 1.4 does NOT support /dev/fdset/nnn fd passthrough for the backend, limiting to just two known names means that we don't get tempted to try fd passthrough where it won't work. [1]https://lists.gnu.org/archive/html/qemu-devel/2013-03/threads.html#00023 * src/conf/domain_conf.c (virDomainRNGDefParseXML): Only allow /dev/random and /dev/hwrng. * docs/schemas/domaincommon.rng: Flag invalid files. * docs/formatdomain.html.in (elementsRng): Document this. * tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.args: Update test to match. * tests/qemuxml2argvdata/qemuxml2argv-virtio-rng-random.xml: Likewise. 2013-03-04 22:42:07 +00:00			`-object rng-random,id=rng0,filename=/dev/hwrng \`
virtio-rng: Add rate limiting options for virtio-RNG Qemu's implementation of virtio RNG supports rate limiting of the entropy used. This patch exposes the option to tune this functionality. This patch is based on qemu commit 904d6f588063fb5ad2b61998acdf1e73fb4 The rate limiting is exported in the XML as: <devices> ... <rng model='virtio'> <rate bytes='123' period='1234'/> <backend model='random'/> </rng> ... 2013-02-13 14:37:39 +00:00			`-device virtio-rng-pci,rng=rng0,max-bytes=123,period=1234,bus=pci.0,addr=0x4`