admin
5f35aa0346
The S figures (66 MB -> 42.0s, two passes agreeing to 0.6s) had a spread tight enough to prove fixed work dominates, which is exactly why they said nothing about M. Second point taken 327x larger, same app, same method: clock from restore request to the app serving the correct discriminator. rallly's postgres volume grown 66 MB -> 21.1 GB (200k rows, STORAGE EXTERNAL so TOAST cannot compress it into a fake number). Two reps: rep 1 backup 406.4s unit 41149 MB RTO 624.5s discriminator correct rep 2 backup 387.2s unit 41133 MB RTO 591.8s discriminator correct 327x the data cost 14.5x the time - strongly sub-linear: RTO ~= 40s + 26.9 s/GB backup ~= 29s + 17.4 s/GB 10 GB -> 5.2 min 20 GB -> 9.6 min (measured 10.1) 100 GB -> 46 min The fixed ~40s dominates below ~1.5 GB, which IS the S band and explains its tight clustering. The more consequential result is capacity. A DB-backed app's recovery unit is 1.90x its data (volume tar PLUS SQL dump): 21.1 GB produced a 40.2 GB unit. The default appliance ships /mnt/sys_drive at 20 GB, so the largest app that can hold a local Tier-1/2 recovery unit on a default box is about 10 GB - and that fills the volume. The M band does not fit on a default box at all; this test only reached 21 GB because sys_drive was first grown 20G -> 70G with the same operation the product performs via SysDataGrowGB. A tier-sizing decision, not a defect, but it is invisible until an app crosses it. Caveats stated in the doc: two points define a line but do not test linearity; the 1.90x is DB-app-specific and a file-only app should be nearer 1.0x (inferred, not measured); synthetic incompressible data; one app, one box.
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.
Host agent & platform — architecture/, proxmox-platform.md
The operator-tier agent and the Proxmox platform.
architecture/01-topology-and-trust.md— topology & trust modelarchitecture/03-host-agent.md— the host agent (Go; v0.29.1)architecture/04-control-plane-authorization.md— signing, escrow, authzarchitecture/02-controller-module-map.md— historical v0.33 planning map; the live map iscontroller/module-map.mdproxmox-platform.md— Proxmox platform reference
Hub (operator backend) — architecture/05
architecture/05-hub-architecture.md— hub architecture (v0.11.0)
Security audits & remediation — audits/
audits/deep-sweep-2026-06-13.md— cross-repo deep audit (controller + agent) with remediation statusaudits/bughunt-reconcile-2026-06-13.md— reconciliation of the v0.30.3 BUGHUNT against current code + merged fix list
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.