[openstack-dev] [nova] Boot from volume 's instance of rebuild operation
mriedemos at gmail.com
Wed Dec 6 23:12:48 UTC 2017
On 12/6/2017 2:11 AM, 李杰 wrote:
> Now the boot from volume 's instance of rebuild operation has a
> problem.For example,after the rebuild operation,the instance 's root
> disk is not replace.
> I found the reason is that when we use the "_build_resources" function
> to prepare source,it obtains the block devices according to the previous
> instance 's uuid and attaches them to instance.So boot from volume 's
> instance of rebuild operation doesn't update data.
> To solve it,I plan to use CLI 's "metadata" option,to increase a
> key name "source_type".The "source_type" includes "snapshot" and
> "image".We can judge from "source_type".If the "source_type" is
> "snapshot",we can transform the given snapshot to a volume and attach
> this volume to instance.If the "source_type" is "image",we don't handle it.
> Can you give me some advice?Help in troubleshooting this issue
> will be appreciated.
We just started disallowing rebuilding a volume-backed instance where
the image changes during the rebuild. We don't support it in the compute
service, as you've found out, so we're going to make it a fast failure
in the API.
More information about the OpenStack-dev