ADR 0163: taking a module over is a comparison — what it compares, refuses and carries; designs 05 and 09; group 6's issues located, 093 resolved

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2026-10-01 21:12:36 +02:00
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@@ -2,8 +2,9 @@
layer: to-be
status: in-progress
code: [mesh-host]
updated: 2026-09-29
updated: 2026-10-01
decisions:
- 02-DECISIONS/0163-taking-a-module-over-is-a-comparison.md
- 02-DECISIONS/0141-the-host-delivers-its-own-successor.md
- 02-DECISIONS/0100-a-node-in-use-is-adopted-before-it-is-converged.md
- 02-DECISIONS/0102-the-mesh-writes-into-a-shared-file-never-over-it.md
@@ -153,6 +154,15 @@ checked:* unit tests hold the host to keeping a found file and container, conver
taken, never removing a held file and reporting one that changed; the adoption bed asserts a found
file byte for byte unchanged until its module is taken.
**What the host says of a found container, and what it removes** — revision, 2026-10-01
([ADR 0163](../../02-DECISIONS/0163-taking-a-module-over-is-a-comparison.md)). Its report of a held
container carries the image and the image's creation date, the networks it is on and the other
containers on each, its mounts and its published ports — the facts a take compares. The host compares
every field it writes before calling a container current, volumes and paths included; its record keeps
a resource's former targets, removes a container or file it wrote under a name the declaration no
longer names, never removes what was found, and reports what runs on the machine that it neither
wrote nor holds. *How it is checked:* ADR 0163's table.
**Found reaches every kind that can touch what the machine has**
([ADR 0103](../../02-DECISIONS/0103-what-an-adopted-node-holds-and-what-its-guard-refuses.md)). For a module not yet taken, a directory present with no record
keeps its mode and owner, a unit present with no record keeps its state and boot setting, a