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Re: [virt-tools-list] iSCSI disk goes missing after domU installation



On Tue, Apr 17, 2012 at 12:56:29PM -0400, Alan McKay wrote:
> On Mon, Apr 16, 2012 at 4:04 PM, Konrad Rzeszutek Wilk <
> konrad wilk oracle com> wrote:
> 
> > And do 'xm console <guest>", and run 'vncviewer localhost:0'
> > and in the GRUB entry add this to your Linux stanza:
> >
> 
> So I'm a bit confused here.  Do you mean change the way I boot from the
> live CD because if it is not finding my hard drive how is it going to find
> the grub entries on the HD?

No. The problem you said you had was that your installation
on your hard-disk could not boot. I want you to change the options
in the GRUB2 menu when booting the guest. You might need to hold/hit
Shift to see.
> 
> 
> > "console=ttyS0,115200 debug loglevel=8 initcall_debug"
> >
> 
> So I'm just not sure where to add this.   I think I found how to do it in
> new grub but then it struck me that it was not finding the HD anyway so
> changing it there did not seem to make sense.

Huh? GRUB2 doesn't even get loaded?
> 
> And that leads me to another question about the xen / virt-manager combo -
> I don't see any way with this to get into BIOS settings for the VM.   And
> when I start the VM either from the HD or the CD there does not seem to be
> any way to interact with the BIOS.  When trying to boot from the HD it just

Right. There isn't any way to interact with the BIOS.
> jumps up immediately adn says it is not found.

> 
> 
> 
> > That will pipe your guest output to 'xm console'. From there it should
> > be possible to figure out why the disks aren't seen.
> >
> 
> My config file already said "serial=pty" and when I do the xm command to
> view the console when the VM boots, I get nothing.
> 
> 
> > Oh wait, you are using 'virt install' do this right? Then to
> > get that .xm file, do something like this:
> >
> 
> Yes, I did create it like that.  So now where is the definitive config
> stored?   I have a file /etc/xen/UbuntuServerS1 which has my config, but I
> can also dump the XML as you suggested.   So which one is being used when I
> boot?  Just so I know where to change it.

I don't know actually. If you are using virt-* it is probably the XML
but if you are using an .xm file to start it - then change that.

> 
> 
> > Here is what my config file looks like - I added a couple of the VNC
> related directives after your last email, but I am not using VNC to view
> the console.  I'm using the console tab in virt-manager.
> 
> name = "UbuntuServerS1"
> uuid = "dcc3a34e-b9d2-4b63-b169-cfa9213330e0"
> maxmem = 4096
> memory = 4096
> vcpus = 2
> builder = "hvm"
> kernel = "/usr/lib/xen/boot/hvmloader"
> boot = "cc"
> pae = 1
> acpi = 1
> apic = 1
> localtime = 0
> on_poweroff = "destroy"
> on_reboot = "destroy"
> on_crash = "destroy"
> device_model = "/usr/lib64/xen/bin/qemu-dm"
> sdl = 0
> vnc = 1
> vncunused = 1
> vnclisten = "0.0.0.0"
> keymap = "en-us"
> disk = [
> "phy:/dev/disk/by-path/ip-192.168.160.250:3260-iscsi-iqn.1986-03.com.sun:02:f4f32db3-53b1-422c-c979-c568b1e6227b-lun-1,hda,w",
> "file:/data/iso/ubuntu-12.04-beta2-desktop-amd64.iso,hdc:cdrom,r" ]
> vif = [
> "mac=00:16:3e:20:95:39,bridge=xenbr1,script=vif-bridge,vifname=vif61.0",
> "mac=00:16:3e:4e:92:c4,bridge=xenbr0,script=vif-bridge,vifname=vif61.1" ]
> parallel = "none"
> serial = "pty"

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