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stage-1-init: add boot.persistence option #83911

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Merged
merged 1 commit into from
Jul 30, 2020
Merged

stage-1-init: add boot.persistence option #83911

merged 1 commit into from
Jul 30, 2020
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@mkg20001 mkg20001 commented Apr 1, 2020 •
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This option allows replacing the tmpfs mounted on / by
the live CD's init script with a physical device

Since nixOS symlinks everything there's no trouble
at all.

That enables the user to easily use a nixOS live CD
as a portable installation.

Note that due to some limitations in how the store is mounted
currently only the non-store things are persisted.

Motivation for this change
Things done
  • Tested using sandboxing (nix.useSandbox on NixOS, or option sandbox in nix.conf on non-NixOS linux)
  • Built on platform(s)
    • NixOS
    • macOS
    • other Linux distributions
  • Tested via one or more NixOS test(s) if existing and applicable for the change (look inside nixos/tests)
  • Tested compilation of all pkgs that depend on this change using nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
  • Tested execution of all binary files (usually in ./result/bin/)
  • Determined the impact on package closure size (by running nix path-info -S before and after)
  • Ensured that relevant documentation is up to date
  • Fits CONTRIBUTING.md.

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@mkg20001
stage-1-init: add boot.persistence option
948de10 
This option allows replacing the tmpfs mounted on / by
the live CD's init script with a physical device

Since nixOS symlinks everything there's no trouble
at all.

That enables the user to easily use a nixOS live CD
as a portable installation.

Note that due to some limitations in how the store is mounted
currently only the non-store things are persisted.
@ofborg ofborg bot added 6.topic: nixos Issues or PRs affecting NixOS modules, or package usability issues specific to NixOS 8.has: module (update) This PR changes an existing module in `nixos/` 10.rebuild-darwin: 0 This PR does not cause any packages to rebuild on Darwin 10.rebuild-linux: 1-10 labels Apr 1, 2020
@mkg20001 mkg20001 mentioned this pull request Apr 16, 2020
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@worldofpeace worldofpeace merged commit b21c16f into NixOS:master Jul 30, 2020
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6.topic: nixos Issues or PRs affecting NixOS modules, or package usability issues specific to NixOS 8.has: module (update) This PR changes an existing module in `nixos/` 10.rebuild-darwin: 0 This PR does not cause any packages to rebuild on Darwin 10.rebuild-linux: 1-10
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