Hi; Today i noticed that when you create a Centos 7 vm by choosing os type as CentOS7 then the created vm did not use virtio it uses old hda/ide access technique this problem makes Centos 7 vm's to boot slowly, i nearly wait 30 seconds after grub loads for CentOS 7. When i change this value to virtio it boots without any wait.
So how could i change this Centos 7 vm's default disk access type to virtio? This problem creates real headache on my system :) Example CentOS libvirt disk part: <emulator>/usr/bin/kvm-spice</emulator> <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='none'/> <auth username=xx'> <secret type='ceph' uuid='xsw'/> </auth> <source protocol='rbd' name='jacknode/4e2cd1be-5c7f-43ff-b44b-bf9f87e84b19'> <host name='172.16.44.22' port='6789'/> </source> * <target dev='hda' bus='ide'/>* <address type='drive' controller='0' bus='0' target='0' unit='0'/> </disk> Example Ubuntu Trusty libvirt disk part: <disk type='network' device='disk'> <driver name='qemu' type='raw' cache='none'/> <auth username='xx'> <secret type='ceph' uuid='xsw'/> </auth> <source protocol='rbd' name='xx/cfafb241-b9c7-4d41-acdc-aac937d96a19'> <host name='172.16.44.22' port='6789'/> </source> * <target dev='vda' bus='virtio'/>* <address type='pci' domain='0x0000' bus='0x00' slot='0x04' function='0x0'/> </disk> Thanks Özhan Ruzgar Karaman