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 <melwi...@gmail.com> ha >> scritto: >> >> On Fri, 12 Oct 2018 21:50:27 +0000, 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 the specific case as I was sure >> the image's format was raw (the image has been deleted in the meantime >> but I can see in the database that the image's disk-format was indeed >> "raw"). > > Thanks for sharing that info. The reason I suggested that maybe the original > image wasn't created with 'raw' format (example, with 'qemu-img create -f raw > ...') was because I have made that mistake before in the past. :P It is > possible to upload an image to glance that is not format 'raw' and also > specify to glance that it _is_ indeed 'raw' (I used the openstack CLI when I > did the image upload). In that case, you will see nova download the image > instead of doing ceph CoW clone. > >> But a couple of days ago I encountered the same problem. I tried to >> upload an image from volume via Horizon dashboard (where a dropdown >> exists to choose disk-format) and the preselected value was indeed >> "qcow2" instead of "raw". I have no idea*why* it was different from >> the default "raw" but this could have happened last week, too, althoug >> according to the database entry it should not have happened. Anyway, >> now I know the reason why some ephemeral disks are flat, I just can't >> tell how Horizon selects the format, but that's enough research for >> now. If I find out more I'll report back. > > Sure, let us know if you notice anything else unusual. > > Cheers, > -melanie > > > > > _______________________________________________ > Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack > Post to : openstack@lists.openstack.org > Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack _______________________________________________ Mailing list: http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack Post to : openstack@lists.openstack.org Unsubscribe : http://lists.openstack.org/cgi-bin/mailman/listinfo/openstack
