On Fri, Jan 08, 2016 at 01:10:03PM +0000, Andrei Perietanu wrote:
Hi all, I have the following issue, and I hope someone know a way to handle it. I need to grammatically need to create/install a guest OS using the libvirt API. Currently what I do: 1. create a xml with the vm configuration (this will include a path to the iso image) 2. connection.defineXML(<my_config>) 3. vm = connection.lookupByName(<domain_name>)
1. you can do vm = connection.defineXML(<my_config>) but that's just a detail
4. vm.create()
2. You can set: <on_reboot>destroy</on_reboot> That will destroy your guest after it reboots. Then you can start it with new configuration. Don't forget to change the on_reboot in the new config. 3. You can do defineXML() without that cdrom and then do createXML() with the temporary config (with cdrom). Then after the guest is destroyed, you can just start it and it will automatically use the configuration without cdrom. This won't fix your problem, it's just another way to use multiple configs, it will work even if something goes wrong around that reboot. 4. You can subscribe to the restart event and upon that event being fired, you just eject media from the cdrom. 5. You can set <boot order='x'/> for the disk and the cdrom, with the disk having x = 1 and the cdrom having x = 2 (or the older way with <boot dev='hd'/><boot dev='cdrom'/> ) that way it will boot from the hd if it is bootable and fallback to the cdrom when it is not.
This will create a new guest and boot the iso to install the OS. But after installation, when I restart, It again boots from the cdrom. So obviously I need remove the cdrom somehow. I could edit the xml and manually remove the cdrom, but the problem here is how do I know when to do that - i.e. how do I know if the OS has been installed or not? If I use virsh-install to create a guest with the same configuration, after the OS is installed, the cdrom is automatically removed form the guest configuration. Any help is greatly appreciated. Andrei -- The information transmitted is intended only for the person or entity to which it is addressed and may contain confidential and/or privileged material. Any review, retransmission, dissemination or other use of or taking of any action in reliance upon this information by persons or entities other than the intended recipient is prohibited. If you receive this in error please contact the sender and delete the material from any computer immediately. It is the policy of Klas Limited to disavow the sending of offensive material and should you consider that the material contained in the message is offensive you should contact the sender immediately and also your I.T. Manager. Klas Telecom Inc., a Virginia Corporation with offices at 1101 30th St. NW, Washington, DC 20007. Klas Limited (Company Number 163303) trading as Klas Telecom, an Irish Limited Liability Company, with its registered office at Fourth Floor, One Kilmainham Square, Inchicore Road, Kilmainham, Dublin 8, Ireland.
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