[nova] boot from volume with root_gb=0 flavors is not allowed now

Mohammed Naser mnaser at vexxhost.com
Mon Feb 18 18:46:48 UTC 2019


Hi everyone,

Just wanted to give a heads up about the change that recently merged
in Nova which will affect Train (and current master, for deployment
projects).

https://review.openstack.org/#/c/603910/

As of that change, Nova will no longer allow you to to create a VM
when the root_gb of a flavor is set to 0.  This is to avoid a reported
security issue which we've found a while ago:
https://launchpad.net/bugs/1739646

If you're using devstack, you'll probably be okay as the following
change has already fixed it:

https://review.openstack.org/#/c/619319/

However, deployment projects will need to make that adjustment as well
as deployers need to plan accordingly (everyone is going to upgrade to
Train the day we release, right?)

-- 
Mohammed Naser — vexxhost
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