[ https://issues.apache.org/jira/browse/CLOUDSTACK-8979?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Wido den Hollander resolved CLOUDSTACK-8979. -------------------------------------------- Resolution: Fixed This has been merged into master and 4.5 If 4.5.3 will be released it will be in there. > Centos7 vm disks attached as hda/ide not virtio > ----------------------------------------------- > > Key: CLOUDSTACK-8979 > URL: https://issues.apache.org/jira/browse/CLOUDSTACK-8979 > Project: CloudStack > Issue Type: Bug > Security Level: Public(Anyone can view this level - this is the > default.) > Components: Storage Controller > Affects Versions: 4.5.2 > Environment: ACS 4.5.2 over Ubuntu 14.03 KVM hypervizor > Reporter: Özhan Rüzgar Karaman > Labels: centos, libvirt, performance, storage_drivers, virtio > > 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 and this problem > makes Centos 7 vm's to boot slowly(nearly 30 seconds wait after grub stage > passed) and after system boots disk performance is not sufficient when you > compare to virtio. > When i change this value to virtio from libvirt i noticed that vm boots fast > with higher performance. > Below are example libvirt disk access techniques for both CentOS 7 and Ubuntu > Trusty 14.04 > Example CentOS7 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> -- This message was sent by Atlassian JIRA (v6.3.4#6332)