Re: [Engine-devel] Empty cdrom drive.

On 02/15/2012 09:44 AM, Igor Lvovsky wrote: > Hi, > I want to discuss $subject on the email just to be sure that we all > on the > same page. > > So, today in 3.0 vdsm has two ways to create VM with cdrom : > 1. If RHEV-M ask to create VM with cdrom, vdsm just create it > 2. RHEV-M doesn't ask to create VM with cdrom, vdsm still creates > VM with > empty cdrom. Vdsm creates this device as 'hdc' (IDE device, > index 2), > because of libvirt restrictions. > In this case RHEV-M will be able to "insert" cdrom on the fly > with > changeCD request. > > In the new style API we want to get rid from stupid scenario #2, > because > we want to be able to create VM without cdrom at all. > It means, that now we need to change a little our scenarios: > 1. If RHEV-M ask to create VM with cdrom, vdsm just create it > 2. RHEV-M doesn't want to create VM with cdrom, but it want to be > able to > "insert" cdrom on the fly after this. Here we have two > options: > a. RHEV-M should to pass empty cdrom device on VM creation and > use > regular changeCD after that > b. RHEV-M can create VM without cdrom and add cdrom later > through > hotplugDisk command. > > Note: The new libvirt remove previous restriction on cdrom devices. > Now > cdrom can be created as IDE or VIRTIO device in any index. > It means we can easily hotplug it. I didn't know a CDROM can be a virtio device, but in any way it requires driver (which may not exist on Windows). I didn't know an IDE CDROM can be hot-plugged (only USB-based?),

perhaps I'm wrong here. Y. > > > Regards, > Igor Lvovsky > > > _______________________________________________ > Engine-devel mailing list > Engine-devel(a)ovirt.org > http://lists.ovirt.org/mailman/listinfo/engine-devel _______________________________________________ Engine-devel mailing list Engine-devel(a)ovirt.org http://lists.ovirt.org/mailman/listinfo/engine-devel