Added this to maas-images. From chats with Mike, I believe that the Vivid ephemerals are stable on Power8.
I suspect that what's happening (I have not looked too deeply into this so this is just a guess for now) that the ephemerals are built at GA time, and after that point only the filesystem tarball is built for the point releases/daily images.
So even at 14.04.2, you're installing 14.04.2 filesystem but using a 14.04.0 ephemeral to do so.
Unfortunately, We can not use vivid ephemerals to certify Trusty, so we need a full stack of Trusty images for the power machines.
This bug is currently gating PowerNV certification so I consider it a critical bug.
Added this to maas-images. From chats with Mike, I believe that the Vivid ephemerals are stable on Power8.
I suspect that what's happening (I have not looked too deeply into this so this is just a guess for now) that the ephemerals are built at GA time, and after that point only the filesystem tarball is built for the point releases/daily images.
So even at 14.04.2, you're installing 14.04.2 filesystem but using a 14.04.0 ephemeral to do so.
Unfortunately, We can not use vivid ephemerals to certify Trusty, so we need a full stack of Trusty images for the power machines.
This bug is currently gating PowerNV certification so I consider it a critical bug.