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Update night: Phases 2-4 evidence — both engines, the unattended HOLD, and five new findings
Evidence off the machine at the end of the phases that produced it (R-320). Teardown follows.

PHASE 2 — the two database engines, through the REAL Update button:
- MariaDB 11.6 -> 12.3 on nextcloud: PROVEN, and pressed through the button for the first time.
  All four SPIKE-r459 observables: the datadir's own record moved 11.6.2 -> 12.3.3; the engine
  itself says "already upgraded ... no need to run mariadb-upgrade again"; the entrypoint says
  "Major version upgrade detected ... Check required!" and then STARTED and FINISHED it (not the
  `skipped due to $MARIADB_AUTO_UPGRADE` line R-459 feared); and the engine took its own
  pre-upgrade backup, 631 905 B. The seeded Nextcloud account read back.
- PostgreSQL 16 -> 17 on docmost: FAILED exactly as R-463 predicted and nobody had measured.
  5.1 s to held; the pin named 17 while nothing ran; the restore brought it back in 29.1 s.
  The engine's REFUSAL LINE was destroyed by failAndHold before any probe could read it, so it
  was REPRODUCED INDEPENDENTLY with a control on every step (R-320).

PHASE 3 — the bad days. B1 produced THE UNATTENDED HOLD, which this project has never had: the
caller pressed once with nobody watching, the app held after 312.9 s, and passes 2 and 3 pressed
nothing. B2 put the pin back on a pull failure in 1.0 s. B3 refused `busy` six times. B4 showed
there is NO single-flight — 5 of 5 updates ran at once and all ended honest. B5 cut the power in
`backing-up` and the box recovered itself and said so. B7 refused under the 2 GB floor. B9 found
R-458's risk narrower than the row states.

PHASE 4 — every badge on the box is TRUE, and the held app answers all four of Q4's questions.

FINDINGS, five new and three corrections to existing rows. The one that matters: R-618 is P1 —
two templates name a health probe the app does not answer, and because the guarded update waits
on that same probe, a SUCCESSFUL update ends by STOPPING a working app. Measured: tandoor served
HTTP 200 on the new version at four samples across five minutes and was then stopped.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_0159rPz1ZhFKsS53msqPYxtS
2026-09-21 22:13:57 +02:00

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=== the app's own recovery unit + its db dumps, with sizes and times
2026-09-21 20:05 1536 /mnt/sys_drive/felhom-data/backups/primary/privatebin/volume-dumps/privatebin_privatebin_data.tar
2026-09-21 20:06 288 /mnt/sys_drive/felhom-data/backups/primary/privatebin/compose/app.yaml
2026-09-21 20:06 1050 /mnt/sys_drive/felhom-data/backups/primary/privatebin/manifest.json
2026-09-21 20:06 1235 /mnt/sys_drive/felhom-data/backups/primary/privatebin/compose/docker-compose.yml
2026-09-21 20:06 3125 /mnt/sys_drive/felhom-data/backups/primary/privatebin/compose/.felhom.yml
=== any temp/partial names left behind
=== the unit manifest, if there is one
--- /mnt/sys_drive/felhom-data/backups/primary/privatebin/manifest.json
{
"schema_version": 2,
"app_name": "privatebin",
"display_name": "PrivateBin",
"controller_version": "0.261.0",
"created_at": "2026-09-21T20:06:16Z",
"drive": "/mnt/sys_drive",
"namespace_root": "/mnt/sys_drive/felhom-data",
"image_pins": [
"localhost:5000/drill/paste:2.0.1"
],
"secret_env_vars": null,
"data_key_env_vars": null,
"secret_source": "portable secrets (data keys, DB passwords, internal signing secrets) are IN this unit's compose/app.yaml (0600); internet-reachable admin logins are NOT, and come from the guest's app.yaml or are regenerated on restore",
"config_files": [
"docker-compose.yml",
".felhom.yml",
"app.yaml"
],
"db_dumps": [],
=== ZERO-BYTE files under this app's backups (a half-write that still looks like a file)