Re: Fedora Atomic and Docker Host Image [was Re: Docker Host Image: Requirements?]

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On Tue, Mar 11, 2014 at 5:17 PM, James Slagle <jslagle@xxxxxxxxxx> wrote:
How is it incompatible with packaging? The read only root support that already exists in Fedora today is what would be used.

In that /etc and /var are read-only.  Now you're right, there is read-only root which makes sense for certain cases, but changing the OS content to write to a special data partition is taking one farther away from the generality of the package/FHS model.

How do the images get built? Can you use existing image building tools, or it something ostree specific?

The trees (not images) get composed using rpm-ostree.  It's just a wrapper around yum --installroot + ostree commit.

From there after Anaconda support lands, one can install a tree (just like a set of packages) into a disk image or bare metal.  In this model, Anaconda will be doing far less - it'll just be copying data, not depsolving or running through the SELinux labeling, etc.

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