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3 Commits

Author SHA1 Message Date
admin 985388c6e9 R-351: the restore compares where the backup says the data lived; second press cannot start a second run
gates / gates (push) Successful in 10s
Part 3 (not droppable) and the engine half of Part 2. No version bump yet - one bump and
one bake at the end of the session.

PART 3a - a second press really did start a second run. Established with a test BEFORE any
change: both offboxReconstituteHandler and offboxPlaceHandler answered "...elindult" and
overwrote the first restore's op/stack. Cause: every restore handler gated on
backupMgr.IsRunning() - the CONCURRENCY flag, which the restore goroutine acquires AFTER the
handler returns (offbox_reconstitute.go:180, offbox_restore.go:393). Seven sites. The wizard
had read the correct flag since v0.154.0 and said so in a comment; the handlers never moved.
New Server.restoreOpBlocked() reads BOTH flags - the display flag covers the whole off-box
restore, the concurrency flag is the only one the nightly backup holds - and the refusal now
names the running app and a route.

PART 3b - the page DOES refresh; the defect was the RESULT. backups_shared.html gated the
terminal result on a page-local sawRunning flag, so a restore that finished before the page
was opened, or inside one 3s poll, was shown to nobody. The 2026-08-21 OpenGist restore took
8.666s and no screen ever said it completed - the answer existed only in docker logs.
RestoreOpStatus.LastRecent now carries the server's verdict. The 10-minute window moved to
internal/backup as RestoreResultWindow and internal/web's constant is an alias: one
expression, two surfaces. Also removed the wizard's self-contradiction, which said the state
refreshes automatically AND that you must refresh the page.

PART 2 (engine) - every recovery unit manifest has carried drive and namespace_root since
schema 1, and NO non-test code read either back. The reconstitution opened the manifest and
took only the coherence stamp, then resolved its destination from the live app. A restore
into a different destination succeeded silently under a green message. New
backup/offbox_placement.go: CheckPlacement (pure, total), PlacementMismatchMessage,
recordedPlacementFromScratch. Compared before the safety dump and before the first byte.
A mismatch is NAMED and refused; ackPlacementChange lets the customer proceed deliberately -
a separate field from confirm=1, because one click must not carry two decisions. An UNKNOWN
recording is never a mismatch: refusing on an absence would strand every pre-field unit.
The not-installed refusal (R-253) now names the drive the backup recorded.

RED-PROOFS, each mutation asserted applied and reverted to 0:
  B  both guards removed (count asserted 2) -> the restore WAS seen starting with no drive
     attached: no error, full 3.00s run, wrote into /tmp/mutant-destination
  C  Mismatch forced false -> the silent divergent restore returned
  E  Known() forced true  -> the fabricated empty prefill appeared
  D  Mismatch forced true -> 8 ordinary reconstitute tests broke, proving reachability both ways
Note on D: the existing fixtures write a schema-1 manifest with NO drive, so they are
scenario-E shaped. The matching case is covered in the scenario table, not by them.

Gates 11/11 OK. Suite 28 packages ok. Hungarian verified as hex, no BOM, no mojibake sentinels.

NOT in this commit, still open: Part 2's scenario-A prefill UI, Part 1's deploy-page
visibility line, Part 1's specification document, Part 4's measurement.
2026-08-21 21:04:16 +02:00
admin 78ff991f1c v0.153.0 — R-47: the DB replay no longer races the app, on BOTH restore paths
Closes R-47. No new agent coupling — MinAgent stays 0.90.0.

The replay needs a running DB container, so both restore paths started the
WHOLE stack first, giving the application a window to rebuild the very schema
objects the dump was about to create. Measured live on 2026-07-19 (H4,
DIAG-immich-restore-round2): immich-server rebuilt clip_index two seconds
before the dump's CREATE INDEX, the replay aborted "already exists" under
ON_ERROR_STOP=1, and immich reported schema drift. The data survived only
because pg_dump emits COPY before CREATE INDEX.

Both paths now open a DB-ONLY window: only the stack's database service(s)
come up, the dump is replayed with the app still down, and the full start
runs only after the replay exits 0. Fail-closed: a dump with no identifiable
DB service refuses BEFORE the first mutation. Every exit from the window
still does a best-effort full start, so a failed restore never leaves a box
with a database and no application.

New: appbackup.DBServiceNames (yaml.v3 services-map parse — never a line
scan; immich's top-level volume keys are the decoy) sharing dbTypeForImage
with DiscoverDatabases; stacks.Manager.StartStackServices (refuses an empty
list — argument-less `up -d` is a full start); RedeployFromEnv split into
PersistUnitRedeployConfig + its unchanged tail. StackDataProvider's
RecreateStackFromUnit becomes RecreateStackDefinitionFromUnit — the hidden
`up -d` inside the old name is what carried the defect on the local path.

19 new tests (ordering plus state-at-replay-time, zero-mutation fail-closed
effects, replay-failure bring-up, parser decoys, empty-list refusal); three
companion red-proofs run and reverted. 23/23 packages green.

Not yet live-validated: STOP-1 supervised reconstitute, golden 0.153.0.
2026-07-20 17:01:52 +02:00
admin 062357f778 v0.148.0 — coherent snapshot pairs + an offsite restore that actually restores (R-43 + R-44)
Closes the two findings from DIAG-immich-restore-2026-07-19. Viktor deleted 11
immich photos to test offsite restore; both runs flashed success and the photos
stayed gone. Two independent defects.

R-43 — no offsite path could restore a database. All three buttons were
file-only: the two "visszaállítás" actions staged to a scratch folder and never
touched postgres, and place-to-live merged only MISSING files. For a DB-indexed
app the bytes returned and the app still could not see them. The dump was
carried INTO every snapshot and could never be replayed OUT of one.

New ReconstituteFromOffsite (/backup/offbox/reconstitute): safety dump → stop →
files overwritten to the snapshot version → start → the snapshot's own dump
replayed → health wait. Two invariants:
  - nothing is ever deleted (-a, no --ignore-existing, no --delete): a file
    created after the snapshot survives as an extra;
  - the undo exists before the act — the pre-restore- dump is verified ON DISK
    before anything is stopped, overwritten or replayed; if it cannot be taken
    the operation refuses with zero changes.
The replay reads the SCRATCH unit: the live unit is never overwritten, so
replaying from it would replay the current DB over itself and restore nothing.

R-44 — a manual push shipped an unrefreshed dump (up to ~24h old). That day's
predated the customer's account by four hours and probed to asset:0/user:0/
album:0 inside 52MB whose bulk was immich's shipped geodata. Every run, manual
AND nightly, now refreshes dumps + units BEFORE capturing. Order is the
mechanism: the gap can only ADD files the DB does not reference yet, never
remove one it does. Manifests carry offsite_run_id + dumps_at, so coherence is
verifiable at restore time rather than assumed; the periodic refresh carries a
prior stamp forward and never invents one.

Honesty surfaces, all warn-level and none a gate: unstamped (pre-v0.148) pairs
report their skew, ValidateDump gained an EXACT-match accounts-table sniff for
customer-empty dumps, the completion flash states an outcome instead of a
mechanism, and the missing-only button now says what it does NOT do.

11 tests; 5 red-proofs run and reverted. Two of those found real test weaknesses
rather than confirming strength — the first undo mutation was caught by a second
guard, and the first table-matching test did not discriminate between the two
matchers at all. Both tests were rewritten to the cases that separate them.

NOT in scope: R-41's catalog invariant check, nightly cadence, retention, quota
math, tier-2, and v0.147.x progress semantics beyond one added phase line.

Live acceptance (§9) has NOT run: no capability-map flip, customer-restore row
stays MISSING, R-3 stays DRAFT.

Co-Authored-By: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01P9Nn14TWGzKoqAJAiVwC2s
2026-07-19 12:21:16 +02:00