from ovirt users mailing list:

>> On 11/23/2013 10:09 PM, Blaster wrote:
>>> I’m trying to move from ESXi to KVM/OVIRT.   To attach an ISO to a
>>> CDROM under ESXi, I just have to add the NFS share with all my ISOs,
>>> then go to the CDROM and attach one of the ISO images and away I go.
>>>
>>> Under OVIRT, it seems like I have to create yet another datastore, use
>>> engine-iso-upload which will create yet another copy of the ISO,
>>> before I can attach it to a virtual CD device.
>>>
>>> Please tell me I missed something in my hours of searching that this
>>> isn’t true, that I don’t really have to duplicate each ISO that I
>>> already have on a NAS NFS share, to yet another copy that OVIRT can use.
>>>
>>> There also doesn’t seem to be a nice way to take a disk image and
>>> simply click “add to inventory” like I can with ESXi, that I have to
>>> use image uploader to create yet another copy of the image and wait
>>> for it to copy a 100G file before I can create a VM out of it.
>>>
>>> Thanks for any suggestions on making this process easier.

> On 11/24/2013 05:19 AM, Bob Doolittle wrote:
>> Agreed. Many of us already have an existing directory of ISOs which is
>> NFS-shared, (I created mine while using VirtualBox for several years)
>> and would simply like to use it.
>>
>> This is an issue which is on the To-Do list, but unfortunately didn't
>> make the first cut for 3.3.2 recently.
>>
>>  From what I understand, it should not be terribly difficult to change
>> oVirt to utilize it. I believe it was Itamar who previously described a
>> way on IRC to use symlinks to refer to existing ISOs.
>>
>> It seems like most of the competition allows a VM to access any file
>> path for an ISO, rather than having to copy it into a storage domain
>> first. That would be much preferable in my opinion.

> On 24/11/2013 15:33, Itamar Heim wrote:
> indeed.
> if someone can write a helper script to re-map a regular iso store as a storage domain, i think would help as a srop gap - should be simple.