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
admin
9c69b3ff07
