Date: Wed, 22 Jul 2020 17:50:31 -0700 From: "Russell L. Carter" <rcarter@pinyon.org> To: freebsd-questions@freebsd.org Subject: Re: forwarding audio from a (bhyve) vm Message-ID: <93920d59-a06c-62c6-7393-c19a2db2ed88@pinyon.org> In-Reply-To: <20200721022754.GM67461@aurora.gregv.net> References: <295d43ec-b5dc-2899-5d22-fb0b5d8ff5cb@pinyon.org> <20200720120813.4b020a5b.freebsd@edvax.de> <08284be8-6508-0451-312b-b575dc6d4331@pinyon.org> <42870245-d3c6-be29-242b-67b7697d7402@pinyon.org> <20200721022754.GM67461@aurora.gregv.net>
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Hi Greg, sndio, if it can be made to work, also appears perfect. In summary, I want to run multiple vm's in a Facebook cast-off server that has 32 threads and 128GB of memory... but no audio hardware. Adding the hda device to bhyve doesn't seem to work, I am guessing, because there is no physical audio hw in the bhyve host. The latest tarball of sndio compiles and installs cleanly on ancienne Debian 9. But what about sound devices? A couple of questions inline, if possible: On 2020-07-20 19:27, Greg Veldman wrote: > On Mon, Jul 20, 2020 at 04:00:22PM -0700, Russell L. Carter wrote: >> On 2020-07-20 15:06, Russell L. Carter wrote: >>> Seren looks perfect.?? However it uses alsa to access the "sound card", >>> which I see from googling should be achievable in a bhyve vm by >>> configuring the HDA emulation. Evidently, after consulting >>> https://wiki.freebsd.org/SummerOfCode2016/HDAudioEmulationForBhyve >>> and >>> https://forums.freebsd.org/threads/what-is-the-current-status-of-audio-emulation-in-bhyve.74557/ >>> >>> >>> I should be able to achieve this using vm-bhyve by setting >>> >>> bhyve_options="-s 9,hda,play=/dev/dsp1,rec=/dev/dsp1" >>> >>> in the vm template file. >> >> Oh well, the vm fails to start with this template configuration. >> I am not sure how to fix it. There is only one vm running, so >> I don't think bhyve should be running out of slots/devices. >> There is no audio hardware in the bhyve host... is that a >> problem? I don't want to listen on the bhyve host, I want to >> ship the audio over the physical network to another FreeBSD >> system. >> >> Both the bhyve host and the target system are running FreeBSD >> 12/stable from the beginning of July. > > I currently do this with some of my systems, I use sndio and > have had no issues at all. My current setup is all FreeBSD > hosts, but sndio runs on GNU/Linux and NetBSD, OpenBSD (in > fact it's originally from OpenBSD I believe). > > On the host you wish to send the audio from: > > $ grep -i audio .bashrc > export AUDIODEVICE="snd@10.0.2.1/0" You don't need to start sndiod on the audio server system for the client system to connect? > > On the host you wish to hear the audio on: > > $ grep -i sndio /etc/rc.conf > sndiod_enable="YES" > sndiod_dev="rsnd/$($SYSCTL -n hw.snd.default_unit)" > sndiod_flags="-f ${sndiod_dev} -c 0:7 -j off -s default -m mon -s > monitor -L 10.0.2.1" That looks very good. My target system has a non-default "default". Thank you, Russell > $ grep -i snd /etc/sysctl.conf > # Default sound device (from /dev/sndstat) > hw.snd.default_unit=2 > > See the sndio(7) manpage for setting up the cookie on both > hosts to handle authentication. >
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