We used raw backed qcows. We even have/had an ansible playbook that would pre-stage the raw files on compute nodes.
This should be controlled by the: force_raw_images= True paramater (which also happens to be the default). I don’t think its possible to do this via ephemeral volumes. Re: your image placement there is schedulure options that cover image/falvor metadata and dedicating hosts to those specific images/flavors. http://docs.openstack.org/kilo/config-reference/content/section_compute-scheduler.html - Look for Images Properties filter and the Compute Capabilities Filter. You may need to extend the image property filter to inculde random key matching https://github.com/openstack/nova/blob/master/nova/scheduler/filters/image_props_filter.py ___________________________________________________________________ Kris Lindgren Senior Linux Systems Engineer GoDaddy From: Adam Lawson <alaw...@aqorn.com> Date: Wednesday, January 4, 2017 at 2:48 PM To: "openstack-operators@lists.openstack.org" <openstack-operators@lists.openstack.org> Subject: Re: [Openstack-operators] [Glance] [Nova] Multiple backends / Qcow Derived Images Just a friendly bump. To clarify, the ideas being tossed around are to host QCOW images on each Compute node so the provisioning is faster (i.e. less dependency on network connectivity to a shared back-end). I need to know if this is possible or not. So far, I've seen nothing that suggests that it is but i want to confirm that. Also, derived images is a QCOW thing[1], I'm wondering if creating these dynamically is supported by Nova and/or Glance. [1] http://nairobi-embedded.org/manipulating_disk_images_with_qemu-img.html#creating-derived-images //adam Adam Lawson Principal Architect, CEO Office: +1-916-794-5706 On Tue, Jan 3, 2017 at 5:01 PM, Adam Lawson <alaw...@aqorn.com<mailto:alaw...@aqorn.com>> wrote: Greetings fellow Stackers! Question re GlanceNova: Does Glance and/or Nova support attaching volumes built with derived images (created from a master registered with Glance (ref qcow))? Glance-only question: Can Glance be configured to place images on separate hosts (i.e. imageX on ComputeX and imageY on ComputeY)? //adam Adam Lawson Principal Architect, CEO Office: +1-916-794-5706<tel:(916)%20794-5706>
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