Re: [Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-19 Thread melanie witt
On Fri, 12 Oct 2018 20:06:04 -0700, Remo Mattei wrote: I do not have it handy now but you can verify that the image is indeed raw or qcow2 As soon as I get home I will dig the command and pass it on. I have seen where images have extensions thinking it is raw and it is not. You could try 'qe

Re: [Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-12 Thread Remo Mattei
Hi all I do not have it handy now but you can verify that the image is indeed raw or qcow2 As soon as I get home I will dig the command and pass it on. I have seen where images have extensions thinking it is raw and it is not. Remo >> Il giorno 12 ott 2018, alle ore 17:17, melanie witt ha

Re: [Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-12 Thread melanie witt
On Fri, 12 Oct 2018 21:50:27 +, Eugen Block wrote: I would consider this thread as closed. After I learned that nova imports flat images if the image's disk-format is not "raw" I tested some different scenarios to understand more about this topic. I still couldn't explain why nova did that in

Re: [Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-12 Thread Eugen Block
Hi Melanie, thanks for your response. I would consider this thread as closed. After I learned that nova imports flat images if the image's disk-format is not "raw" I tested some different scenarios to understand more about this topic. I still couldn't explain why nova did that in the speci

Re: [Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-12 Thread melanie witt
On Tue, 09 Oct 2018 08:01:01 +, Eugen Block wrote: So it's still unclear why nova downloaded a raw glance image to the local filesystem during the previous attempt. I always knew that with Ceph as backend it's recommended to use raw images but I always assumed the "disk-format" was not more

Re: [Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-09 Thread Eugen Block
Hi, I just wanted to follow up on this for documentation purpose. Although I still don't have all answers there's something I can explain. When I upload a new image (iso) to create a new base image for glance, and I use "--disk-format iso", this will lead to the described behavior, nova w

[Openstack] [Nova][Glance] Nova imports flat images from base file despite ceph backend

2018-10-04 Thread Eugen Block
Hi list, this week I noticed something strange in our cloud (Ocata). We use Ceph as backend for nova, glance and cinder, everything really works like a charm. But from time to time we've noticed that some instances take much longer to launch than others. So I wanted to take a look what's h