Re: [libvirt] How to connect to console of domain on PowerPC?
-----Original Message-----
From: Daniel P. Berrange [mailto:berrange@redhat.com]
Sent: Tuesday, February 05, 2013 6:18 PM
To: Yin Olivia-R63875
Cc: libvir-list(a)redhat.com
Subject: Re: [libvirt] How to connect to console of domain on PowerPC?
On Tue, Feb 05, 2013 at 03:05:58AM +0000, Yin Olivia-R63875 wrote:
> Hi Daniel,
>
> Thanks for your comments.
> So far there's no device in QEMU to align with chardev on FSL PowerPC
platforms like spapr-pty for IBM PSeries.
> Maybe it needs patches to QEMU. I'll take deeper investigation on it.
That's really a QEMU issue then - every chardev needs to have a
corresponding -device to associtte with.
'-serial' syntax may be legacy but it should still work.
There're two examples for "-serial tcp" use cases:
$ cat libvirt/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp.args
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
pc -m 214 -smp 1 -nographic -monitor unix:/tmp/test-monitor,server,nowait \
-no-acpi -boot c -hda /dev/HostVG/QEMUGuest1 -net none -serial \
tcp:127.0.0.1:9999 -parallel none -usb
$ cat libvirt/tests/qemuxml2argvdata/qemuxml2argv-serial-tcp-chardev.args
LC_ALL=C PATH=/bin HOME=/home/test USER=test LOGNAME=test /usr/bin/qemu -S -M \
pc -m 214 -smp 1 -nographic -nodefconfig -nodefaults -chardev socket,\
id=charmonitor,path=/tmp/test-monitor,server,nowait -mon chardev=charmonitor,\
id=monitor,mode=readline -no-acpi -boot c -hda /dev/HostVG/QEMUGuest1 -chardev \
socket,id=charserial0,host=127.0.0.1,port=9999 -device isa-serial,\
chardev=charserial0,id=serial0 -usb -device virtio-balloon-pci,id=balloon0,\
bus=pci.0,addr=0x3
> But can't get any output when connecting domain with a
simple private
root filesystem.
> # vi vm2.xml
> <domain type='lxc'>
> <name>vm2</name>
> <memory>25536</memory>
> <os>
> <type>exe</type>
> <init>/sbin/init</init>
> </os>
> <vcpu>1</vcpu>
> <clock offset='utc'/>
> <on_poweroff>destroy</on_poweroff>
> <on_reboot>restart</on_reboot>
> <on_crash>destroy</on_crash>
> <devices>
> <emulator>/usr/libexec/libvirt_lxc</emulator>
> <filesystem type='mount'>
> <source dir='/media/ram/vm1-root'/>
> <target dir='/var/lib/libvirt/lxc/rootfs'/>
> </filesystem>
> <interface type='network'>
> <source network='default'/>
> </interface>
> <console type='pty' />
> </devices>
> </domain>
>
> # virsh -c lxc:/// define vm2.xml
> # virsh -c lxc:/// start vm2
> Domain vm2 started
>
> # virsh -c lxc:/// console vm2
> Connected to domain vm2
> Escape character is ^]
>
>
> Do you have any suggestion?
Most likely is that the OS you are running has not decided to run any login
process on the console
'/sbin/init' itself does not directly provide any console interaction It
needs to be configured to run a mingetty process or similar
Daniel
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