27 Aug
2013
27 Aug
'13
4:28 p.m.
On Tue, Aug 27, 2013 at 8:56 AM, Paolo Bonzini <pbonzini@redhat.com> wrote: > Il 27/08/2013 15:50, Daniel P. Berrange ha scritto: > > On Thu, Aug 22, 2013 at 08:53:06PM -0500, Doug Goldstein wrote: > >> According to VMWare's documentation 'cdrom-raw' is an acceptable value > >> for deviceType for a CD-ROM drive. The documentation states that the VMX > >> configuration for a CD-ROM deviceType is as follows: > >> > >> ide|scsi(n):(n).deviceType = "cdrom-raw|atapi-cdrom|cdrom-image" > >> > >> >From the documentation it appears the following is true: > >> - cdrom-image = Provides the ISO to the VM > >> - atapi-cdrom = Provides a NEC emulated ATAPI CD-ROM on top of the host > >> CD-ROM > >> - cdrom-raw = Passthru for a host CD-ROM drive. Allows CD-R burning from > >> within the guest. > >> > >> A CD-ROM prior to this patch would always provide an 'atapi-cdrom' is > >> modeled as: > >> <disk type='block' device='cdrom'> > >> <source dev='/dev/scd0'/> > >> <target dev='hda' bus='ide'/> > >> <address type='drive' controller='0' bus='0' target='0' unit='0'/> > >> </disk> > >> > >> This patch allows an optional element as: > >> <driver name='atapi'/> > >> that would maintain existing behavior. While: > >> <driver name='raw'/> > >> would provide a 'cdrom-raw' to the VM. > > > > > > The 'cdrom-raw' case sounds very similar to the scenario we addressed > > in QEMU, by adding support for a 'lun' value in the device attribute. > > > > eg I think 'cdrom-raw' could be addressed by supporting > > > > <disk type='block' device='lun'> > > <source dev='/dev/scd0'/> > > <target dev='hda' bus='ide'/> > > <address type='drive' controller='0' bus='0' target='0' unit='0'/> > > </disk> > > > > rather than using <driver> > > > > Paolo, you added the 'lun' support - do you agree with this ? > > Yes, 100%. > > - cdrom-image is type='file' device='cdrom' > - atapi-cdrom is type='block' device='cdrom' > - cdrom-raw is type='block' device='lun' > > Paolo > > Thanks guys. I'll respin it to device='lun'. -- Doug Goldstein