[et-mgmt-tools] libvirt/vit-manager with custom kernel
Sukadev Bhattiprolu
sukadev at linux.vnet.ibm.com
Wed Feb 18 03:10:48 UTC 2009
I am running virt-manager and kvm on a T61p laptop running Ubuntu 8.04.
I am able to create and run Fedora10 kvm image fine from within the
virt-manager (Attached 'working.xml' file shows the dumpxml output
of this guest image).
I am trying to run this same image with a custom 2.6.28 kernel. I tried
adding following lines to the <os> section of the 'working.xml' file.
8a9,10
> <kernel>/home/suka/vm/kernels/vmlinuz-2.6.28</kernel>
> <cmdline>"ro root=UUID=fa22e974-699a-4c9a-9e7f-62c138642239 debug"</cmdline>
The guest seems to start up when I when run:
$ sudo virsh create new.xml
and I can see kvm running as follows:
$ ps -f |grep kvm
root 3040 6035 99 17:02 ? 00:08:21 /usr/bin/kvm -M pc -m 512 -smp 2 -monitor pty -kernel /home/linux/vm/kernels/vmlinuz-2.6.28 -append "ro root=UUID=fa22e974-699a-4c9a-9e7f-62c138642239 debug" -drive file=/home/linux/vm/fc10.img,if=ide,boot=on -net nic,macaddr=00:16:3e:0d:ca:1c,vlan=0 -net tap,fd=12,script=,vlan=0 -usb -vnc 127.0.0.1:0
But when I connect to console:
$ vncviewer 127.0.0.1:0
I just see "serial0 console" in the vncviewer and nothing happens.
I believe the 'vmlinuz-2.6.28' kernel is fine, since I can boot it with
following kvm command line
$ /usr/bin/kvm \
-kernel /home/linux/vm/kernels/vmlinuz-2.6.28 -smp 8 -m 1024 \
-append "debug ro console=ttyS0 root=/dev/sda1" \
-hda /home/linux/vm/fc10.img -no-reboot -vnc :9 \
-redir tcp:2209::22 -serial telnet::2009,server
But the same kernel in the virt-manager/libvirt just hangs. virt-manager
shows that the 'guest' is using about 50% CPU and memory but nothing
really seems to be happening.
I checked ~/.virt-manager/*log, /var/log/messages and dmesg on the host (T61p).
Only message I found, repeated several times was in dmesg:
'vcpu not ready for apic_round_robin'
Are there other log files I should check or is there a way to have kvm
print out more useful info on what is happening ?
Thanks,
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