Open Stack

On Mon, Oct 12, 2015 at 3:27 AM, Cory Hawkless <Cory at hawkless.id.au> wrote:

> Hi all,
>
>
>
> When creating a volume from an image(Using Horizon), why does the Cinder
> server need to do what appears to be a conversion of the image before it
> can create the volume?
>
> All of my images in Glance are uploaded in RAW format, images and volumes
> are stored in Ceph.
>
>
>
> The reason I know the images are being processed on my glance server is
> because it runs out of disk space when trying to make volumes from large
> images and the process fails. I can see the temporary file in
> /var/lib/cinder/conversion
>
>
>
> Is it not possible to have glance simply copy the image form the images
> store into the volumes store? I am going to regularly be creating new
> Windows Server instances, so it would take quite some time for a 20gb image
> to be processed by Cinder before it can be uploaded into Ceph.
>
>
>
> Regards,
>
> Cory
>
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​Hey Cory,​

​If I remember correctly, it was due to concerns around security issues.
It's using the intermediate/tmp file to perform image checks prior to
blindly laying down on the volume.  The maybe good news is that at least it
doesn't need to do a conversion of the file.

Thanks,
John​
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