Hi, yes, the OS Type also determines the network controller configured for VMs. The quote from the docs is a general recommendation. For Ubuntu VMs on KVM hypervisors it should usually be fine to use an OS Type for a previous version.
Best regards, Kirk On 10/09/2013 02:03 AM, Indra Pramana wrote: > Hi Kirk, > > Good day to you, and thank you for your e-mail reply. > > Can I confirm that the OS type determines the network controller as well? > > I read from CloudStack documentation that it's not advisable to use a lower > version of the OS if the actual version is not available? > > http://cloudstack.apache.org/docs/en-US/Apache_CloudStack/4.2.0/html/Admin_Guide/create-template-from-existing-vm.html > > === > Note: Generally you should not choose an older version of the OS than the > version in the image. For example, choosing CentOS 5.4 to support a CentOS > 6.2 image will in general not work. In those cases you should choose Other. > === > > Looking forward to your reply, thank you. > > Cheers. > > > > On Wed, Oct 9, 2013 at 4:35 PM, Kirk Kosinski <kirkkosin...@gmail.com>wrote: > >> The OS Type determines the disk controller, so use the "Ubuntu 12.04 >> (64-bit)" OS Type instead. >> >> Best regards, >> Kirk >> >> On 10/09/2013 01:19 AM, Indra Pramana wrote: >>> Dear all, >>> >>> I setup Ubuntu VMs using virtio driver for network and disk for faster >>> performance, and saved them as templates. >>> >>> For Ubuntu 12.04, I saved the template using "Ubuntu 12.04 (64-bit)" OS >>> type and any new VMs being created based on that template will retain the >>> virtio driver settings, no issue. >>> >>> However, for Ubuntu 13.04, I saved the template using "Other Ubuntu >>> (64-bit)" OS type because there's no specific OS type for Ubuntu 13.04, >> and >>> when I test creating new VMs using that template, the virtio driver >>> settings wasn't retained. E.g. it will still use /dev/sda instead of >>> /dev/vda for the disk. >>> >>> Anyone can advise how can I enable virtio on my Ubuntu 13.04 template? >>> >>> Looking forward to your reply, thank you. >>> >>> Cheers. >>> >> >
