Fedora Atomic and Docker Host Image [was Re: Docker Host Image: Requirements?]
walters at verbum.org
Tue Mar 11 23:48:52 UTC 2014
On Tue, Mar 11, 2014 at 5:17 PM, James Slagle <jslagle at redhat.com>
> 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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