Re: [libvirt-users] Performance tuning questions for mail server

>>     <disk type='file' device='disk'> >>       <driver name='qemu' type='raw'/> >>       <source file='/var/lib/libvirt/images/mail02.img'/> >>       <target dev='vda' bus='virtio'/> >>       <address type='pci' domain='0x0000' bus='0x00' slot='0x05' >> function='0x0'/> > > I meant raw disk devices rather than files e.g. > <disk type='block' device='disk'> >      <driver name='qemu' type='raw' cache='none'/> >      <source dev='/dev/server02_vg1_2tb/lv_vm03_swap'/> >      <target dev='vdb' bus='virtio'/> > </disk> > > This eliminates one layer of filesystem overheads. Can this type change be done without modifying the image, or must some conversion be done prior to making this change?