[libvirt-users] KVM Virtualisation, Console output no longer working
Hi, I used to use KVM for virtualisation and have now moved back to it, but I have a problem. When i used to install the guest machine with virt-install i used to use the -x "extra args" part to set the console for the install and guest, but it no longer works. Here is the command i use: virt-install -n server01 -r 512 --os-variant=virtio26 -c /isos/c5u5.iso --nographics --noautoconsole -f /storage/vm/server01 -s 5 bus=virtio -w bridge:br0 -x "console=ttyS0 ks=http://www.domain.com/c5u5.cfg" As you can see im setting the console to ttyS0, but then when i go to connect to the console with: virsh console server01 it either wont connect or comes up with: error: Failed to get local hostname Here is a dump of the xml, but no mention of ttyS0 either. <domain type='qemu' id='5'> <name>server01</name> <uuid>5991cf85-db6c-2b87-b76d-07a0caae77b9</uuid> <memory>524288</memory> <currentMemory>524288</currentMemory> <vcpu>1</vcpu> <os> <type arch='x86_64' machine='rhel5.4.0'>hvm</type> <boot dev='cdrom'/> </os> <features> <acpi/> <apic/> <pae/> </features> <clock offset='utc'/> <on_poweroff>destroy</on_poweroff> <on_reboot>destroy</on_reboot> <on_crash>destroy</on_crash> <devices> <emulator>/usr/libexec/qemu-kvm</emulator> <disk type='file' device='disk'> <driver name='qemu' cache='none'/> <source file='/storage/vm/server01'/> <target dev='hda' bus='ide'/> </disk> <disk type='file' device='cdrom'> <source file='/isos/c5u5.iso'/> <target dev='hdc' bus='ide'/> <readonly/> </disk> <interface type='bridge'> <mac address='54:52:00:61:ea:78'/> <source bridge='br0'/> <target dev='vnet0'/> </interface> <serial type='pty'> <source path='/dev/pts/2'/> <target port='0'/> </serial> <console type='pty' tty='/dev/pts/2'> <source path='/dev/pts/2'/> <target port='0'/> </console> </devices> </domain> Can anyone shed any light on this as im totally stuck.
On Wed, Dec 15, 2010 at 12:06:27PM -0000, tony@specialistdevelopment.com wrote:
Hi,
I used to use KVM for virtualisation and have now moved back to it, but I have a problem.
When i used to install the guest machine with virt-install i used to use the -x "extra args" part to set the console for the install and guest, but it no longer works.
Here is the command i use:
virt-install -n server01 -r 512 --os-variant=virtio26 -c /isos/c5u5.iso --nographics --noautoconsole -f /storage/vm/server01 -s 5 bus=virtio -w bridge:br0 -x "console=ttyS0 ks=http://www.domain.com/c5u5.cfg" As you can see im setting the console to ttyS0, but then when i go to connect to the console with:
You are doing a CDROM based install. The kernel args for that are set in the syslinux config file inside the ISO image and can't be overriden using -x. The -x arg only works when doing a kernel+initrd install (ie --location instead of --cdrom/-c) Daniel
Ahhhhh, i see :) Thanks for that :) Kind Regards Tony
On Wed, Dec 15, 2010 at 12:06:27PM -0000, tony@specialistdevelopment.com wrote:
Hi,
I used to use KVM for virtualisation and have now moved back to it, but I have a problem.
When i used to install the guest machine with virt-install i used to use the -x "extra args" part to set the console for the install and guest, but it no longer works.
Here is the command i use:
virt-install -n server01 -r 512 --os-variant=virtio26 -c /isos/c5u5.iso --nographics --noautoconsole -f /storage/vm/server01 -s 5 bus=virtio -w bridge:br0 -x "console=ttyS0 ks=http://www.domain.com/c5u5.cfg" As you can see im setting the console to ttyS0, but then when i go to connect to the console with:
You are doing a CDROM based install. The kernel args for that are set in the syslinux config file inside the ISO image and can't be overriden using -x. The -x arg only works when doing a kernel+initrd install (ie --location instead of --cdrom/-c)
Daniel
On Wed, Dec 15, 2010 at 12:06:27PM -0000, tony@specialistdevelopment.com wrote:
Hi,
I used to use KVM for virtualisation and have now moved back to it, but I have a problem.
When i used to install the guest machine with virt-install i used to use the -x "extra args" part to set the console for the install and guest, but it no longer works.
Here is the command i use:
virt-install -n server01 -r 512 --os-variant=virtio26 -c /isos/c5u5.iso --nographics --noautoconsole -f /storage/vm/server01 -s 5 bus=virtio -w bridge:br0 -x "console=ttyS0 ks=http://www.domain.com/c5u5.cfg" As you can see im setting the console to ttyS0, but then when i go to connect to the console with:
You are doing a CDROM based install. The kernel args for that are set in the syslinux config file inside the ISO image and can't be overriden using -x. The -x arg only works when doing a kernel+initrd install (ie --location instead of --cdrom/-c)
Daniel
OK, still rather stuck, so i have created a directory with contents of the DVD, now what do i need to do? I guess i need to get virt-install using the initrd and vmlinuz from there? or is that wrong? Kind Regards Tony
participants (2)
-
Daniel P. Berrange -
tony＠specialistdevelopment.com