The flow for all images for this process is to download from Glance to a temporary file, and then write to volume. This is not necessary for raw images, but that optimization has not been done. I did leave a comment about that in the code though 2.5 years ago, but never implemented it - you can give it a go if you'd like :-)
Are you using two different Ceph clusters, one for images and one for volumes? Otherwise it should just be doing a thin provisioned clone of the image (no download, no temp space, no upload). On Mon, Oct 12, 2015 at 12:27 PM, Cory Hawkless <[email protected]> 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 > > _______________________________________________ > Mailing list: > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : [email protected] > Unsubscribe : > http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > > -- *Avishay Traeger, PhD* *System Architect* Mobile: +972 54 447 1475 E-mail: [email protected] Web <http://www.stratoscale.com/> | Blog <http://www.stratoscale.com/blog/> | Twitter <https://twitter.com/Stratoscale> | Google+ <https://plus.google.com/u/1/b/108421603458396133912/108421603458396133912/posts> | Linkedin <https://www.linkedin.com/company/stratoscale>
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