What happens internally when a bootable volume is created ? Is a glance image copied to cinder ?

asked 2015-06-10 05:05:20 -0500

manojhirway gravatar image

I understand that when we boot an instance from a glance image, a copy of a base-image is created on Nova. Does the same happen when we create a bootable volume from a glance image ? Is a copy of the image created on cinder as well ?

How can I be more efficient by not creating a copy of the image and using the image as it is ? In other words, I do not want to make a copy of the image in any way.

Can I directly boot from the image without making a copy ?

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