Re: [Users] booting a vm on a raw file disk definated in a hook script

On 01.06.12 17:40, Itamar Heim wrote: > On 05/25/2012 05:47 PM, Nathanaël Blanchet wrote: >> Hi all, >> >> I'm using this hook script : >> http://gerrit.ovirt.org/gitweb?p=vdsm.git;a=blob;f=vdsm_hooks/vmdisk/befo... >> My goal is to boot a vm on a vm image imported form libvirt/kvm. I want >> to use this single image, that is to say without importing it into ovirt >> with tools like v2v. >> acathrow told me on irc that I'd have to change the boot order in the >> xml, but I don't know how to proceed for many reasons: >> >> * I can't create a vm through the UI which would boot on the disk >> created by the hook script without first creating a disk on the >> relevant storage domain. If I try I have those warnings : >> >> hook: Cannot run VM without at least one bootable disk. >> Alternatives: >> -Create a disk for this VM, and rerun the VM. >> -Change the boot sequence using the Edit VM command (Boot Option >> Sub-Tab). >> -Use the Run-Once command to select a different boot option and >> rerun the VM. >> * If I run a vm with the first disk from the storage domain and an >> additional disk from the hook script, how could I change the boot >> order in the xml definition file if I don't know the xml definition >> of the main disk? >> >> >> thanks all for your help > 1. i guess you can change the script to fix the boot order. > 2. you can create a VM with a disk the same size, and just copy your > converted disk over it (cp for nfs, dd for iscsi), instead of using > the hook. Today you cannot do that because the hook didn't designed to do that. By modifying the hook you can add a<boot order='1'/> to the disk and change the other device boot order to higher number. Take a look at this links: http://libvirt.org/formatdomain.html#elementsDisks http://libvirt.org/formatdomain.html#elementsNICSBoot and look for the string 'boot order'