[Qemu-discuss] Emulate analog CD audio cable

[Dimitris Arvanitis]

Hallo!

Some years ago computer CD-ROM drives used to have a analog CD output
connector (see for example
http://www.pcmag.com/encyclopedia/term/39413/cd-rom-audio-cable) which
you could connect via a cable to your sound card, thus enabling you to
play CD audio tracks directly, without use of a software player. Some
old games now (e.g. Alone in the Dark 1) are dependent on that use of CD
audio tracks. Is there a possibility in Qemu to emulate such analog CD
audio cables, i.e. direct analog connection between CD-ROM drive and
sound card?

Best regards,
Dimitris


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[Qemu-discuss] GUEST Memory statistics understanding ....

[Jean-Pierre Ribeauville]

Hi,



I'm wondering how to explain following metrics I got from 
virDomainMemoryStats(), regarding memory stats for the two GUESTS running on my 
host.







1)  virDomainGetXMLDesc()  shows these values :



memmax (1024000.00) memcurrent(1024000.00) memmax (2048000.00) 
.memcurrent(2048000.00)









2)  As values returned by virDomainMemoryStats(), I got these values :



VIR_DOMAIN_MEMORY_STAT_ACTUAL_BALLOON:

active_balloon (1024000.00)

active_balloon (2048000.00)



VIR_DOMAIN_MEMORY_STAT_RSS:

rss(1194195.312500)

rss(2039269.531250







3)  By using cgroup counters "memory.usage_in_bytes" for both Guests, I got 
these values :



memusage (1 207 207 031 250)

memusage (2 834 503 906 250)



How is it possible to have a balloon size equal to memcurrent ?

What "memory.usage_in_bytes" stands for (it's the maximum value of the three 
metrics I got for each GUEST) ?





FYI , I use these releases :



[root@sparring bin]# rpm -qa | grep qemu

libvirt-daemon-driver-qemu-1.2.8-16.el7_1.3.x86_64

qemu-kvm-1.5.3-86.el7_1.5.x86_64

qemu-kvm-common-1.5.3-86.el7_1.5.x86_64

qemu-guest-agent-2.1.0-4.el7.x86_64

ipxe-roms-qemu-20130517-6.gitc4bce43.el7.noarch

qemu-img-1.5.3-86.el7_1.5.x86_64

[root@sparring bin]# rpm -qa | grep libvirt

libvirt-gconfig-0.1.7-3.el7.x86_64

libvirt-daemon-config-nwfilter-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-storage-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-network-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-qemu-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-secret-1.2.8-16.el7_1.3.x86_64

libvirt-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-nwfilter-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-lxc-1.2.8-16.el7_1.3.x86_64

libvirt-docs-1.2.8-16.el7_1.3.x86_64

libvirt-python-1.2.8-7.el7.x86_64

libvirt-gobject-0.1.7-3.el7.x86_64

libvirt-glib-0.1.7-3.el7.x86_64

libvirt-client-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-nodedev-1.2.8-16.el7_1.3.x86_64

libvirt-devel-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-kvm-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-config-network-1.2.8-16.el7_1.3.x86_64

libvirt-daemon-driver-interface-1.2.8-16.el7_1.3.x86_64

[root@sparring bin]#





Thanks.



Regards,



J.P. Ribeauville



J.P. Ribeauville


P: +33.(0).1.47.17.20.49
.
Puteaux 3 Etage 5  Bureau 4

jpribeauvi...@axway.com
http://www.axway.com



P Pensez à l'environnement avant d'imprimer.

[Qemu-discuss] How to Enable virtio networking on windows host win8.1

[test comp]

Hi All,

I am running qemu on windows 8 host and trying to get the network enabled
on the linux guest with virtio drivers.
but not successful so far, i have also tried setting the static ip address
and dns configuration on my linux guest. But nothing works.

I am using 2.3.0 version Qemu and below is the command line i am executing.

qemu-system-x86_64.exe  -hda linux.img -boot c -vga std -net
nic,model=virtio  -m 1024

If i use below command line on Ubuntu host it just works fine.

qemu-system-x86_64.exe  -hda  linux.img -boot c -vga std -net
nic,model=virtio -net bridge,br=virbr0 -m 1024

there we can easily create the network bridge virbr0, but on windows i
don't know how to do the same.

I tried tap adapter networking also, but that is also not working.

qemu-system-x86_64.exe -hda linux.img -boot c -vga std -m 1024 -net nic
-net "tap,ifname=Ethernet4"

basically guest VM not able to ping to host ipaddress itself, external
networking is next step.

Any Input will be of great help.

Regards
Roshan Sullad

Re: [Qemu-discuss] How to Enable virtio networking on windows host win8.1

[7eggert]

On Mon, 2 Nov 2015, test comp wrote:


Hi All,
I am running qemu on windows 8 host and trying to get the network enabled on 
the linux guest with virtio drivers.
but not successful so far, i have also tried setting the static ip address and 
dns configuration on my linux guest. But
nothing works.

I am using 2.3.0 version Qemu and below is the command line i am executing.

qemu-system-x86_64.exe  -hda linux.img -boot c -vga std -net nic,model=virtio  
-m 1024


qemu will create a network segment just for the emulated system. You need 
to connect that segment using e.g. the "-net user" option (NAT) or to 
connect it using a tap device.


For setting up the TAP device, I found this:
http://wiki.laptop.org/go/Talk:Using_QEMU_on_Windows#Networking_Issues_in_QEmu

(I think setting up ICS is not what you'd want, I'd try to skip it and 
just breate the bridge. That's what I did on Linux.)


HTH