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sysroot: Add concept of deployment "pinning" 📌 #1464

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sysroot: Add concept of deployment "pinning" 📌 #1464

wants to merge 3 commits into from

Commits on Feb 26, 2018

  1. sysroot: Bump mtime when writing an origin file 

    This ensures that e.g. `rpm-ostreed` will get notified of the changes.
    @cgwalters
    cgwalters committed Feb 26, 2018
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  2. sysroot: Add API to clean up transient keys in origin files 

    The `origin/unlocked` and `origin/override-commit` keys are examples of state
that's really transient; we don't want to maintain them across upgrades. Right
now there are bits for this in both `ostree admin upgrade` as well as in
rpm-ostree.

This new API will slightly clean up both cases, but it's really prep for adding
a concept of deployment "pinning" that will live in the new
`libostree-transient` group.
    @cgwalters
    cgwalters committed Feb 26, 2018
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  3. sysroot: Add concept of deployment "pinning" 📌 

    Example user story: Jane rebases her OS to a new major version N, and wants to
keep around N-1 even after a few upgrades for a while so she can easily roll
back. I plan to add `rpm-ostree rebase --pin` to opt-in to this for example.

Builds on the new `libostree-transient` group to store pinning state there.

Closes: ostreedev#1460
    @cgwalters
    cgwalters committed Feb 26, 2018
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