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felhom.eu/documentation
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DRILL R-356b: the off-site restore for a driveless app that HAS a database
A drill, not an implementation. No code, no version bump, no CHANGELOG entry.

Ten of the forty driveless apps carry a database; I re-measured that count and
got 10. For those ten the restore is a five-leg operation that never ran at all
until this week, because R-356 refused before any of it started.

Walked end to end on demo-hp for both engines - docmost (Postgres 16) and
bookstack (MariaDB 12.3) - each deployed for the drill, planted through the
app's own interface, destroyed for real, restored through the endpoint the UI
posts to.

Q1 does it complete: YES. All five legs ran and succeeded, 32s / 25s. Accented
names byte-identical both directions.

Q2 which leg won: the SQL DUMP. Three-way discriminator returned the altered
dump's value. This confirms R-164's F17 ordering on the OFF-SITE path; R-164
only ever cited the local one. Scratch-only mutation; store proved unmutated.

Q3 does a failure tell the truth: partly, and two defects.

Filed R-379 (HIGH, the undo copy is valid, named, and unappliable by any product
action - proven by applying it by hand on both engines), R-380 (HIGH, a failed
MariaDB replay leaves a partial database behind an app reporting healthy, where
Postgres crash-loops visibly), R-381 (MEDIUM, the failure message pastes engine
stderr including customer table rows into the Hungarian surface), R-382 (LOW,
the summary log omits the volume count it already has).

H1, H2 and H4 did NOT fire and that is recorded. H3 fired in a shape nobody
predicted: not a quiet success, but a loud error over a silent inconsistency.

R-361 reproduced independently on a second app. restic check: no errors, 29
snapshots. A flaw in the drill's own planting - a double-escaped accented title -
was caught by reading stored bytes as hex, recorded, and re-measured in Phase 1b.

Register 325236 -> 330683 bytes. Nothing dropped. Teardown: two apps retained
with reason, no pvesm before-snapshot taken (said plainly), no hub-side record
created.
2026-08-22 16:33:45 +02:00
..

Felhom — Documentation

Felhom is a managed home-server service for Hungarian households, built on a three-component model over Proxmox:

  • Hub — operator backend on k3s (hub.felhom.eu). Repo: felhom.eu/hub/.
  • Host agent — one per Proxmox host; operator-tier; owns all Proxmox interaction. Repo: felhom-agent/.
  • In-guest controller — one per customer LXC; Docker-only; manages the customer's apps. Repo: felhom-controller/.

This directory is the central, code-verified documentation home for all three components plus the platform and the security-audit record.

Sections

Controller (in-guest) — controller/

The Docker-only app-domain controller. Full per-area docs grounded in current source (v0.59.0). → controller/README.md: module map, deploy & stack lifecycle, backup architecture, storage/monitoring/metrics, auth/hub/sync/integrations.

Where we stand — architecture/where-felhom-stands.*

The operator's one-page picture of what is proven, built, partial and missing.

Host agent & platform — architecture/, proxmox-platform.md

The operator-tier agent and the Proxmox platform.

Hub (operator backend) — architecture/05

Security audits & remediation — audits/

Spike & test findings — tests/

Per-slice spike/validation findings (phases 0–5, slices 7–10). See tests/.

Conventions

  • Code-verified, not memory-derived. Architectural claims here are checked against the actual current source; if a claim can't be verified it is omitted and flagged, not guessed.
  • Per-repo operational working files (CLAUDE.md, CONTEXT.md, CHANGELOG.md, BUGHUNT.md, REPORT.md, TASK.md) live in their own repos — they are operational, not published docs.
  • Authoritative versions at last refresh: controller v0.59.0, agent v0.29.1, hub v0.11.0.