# Immich migration plan

One-time migration of photos from Nextcloud into Immich's native library.

- **Source:** `/opt/argento/docker/nextcloud/data/timothykim/files/Photos/` (338 GB, ~58k files)
- **Target:** Immich native library on `threeteras` pool (`/opt/argento/docker/immich/library/`)
- **Tool:** official `immich-cli` via Immich HTTP API
- **Expected wall time:** ~1 day if videos are short clips, 2-3 days if significant long/4K video

## 1. Pause the backup cron (optional but recommended)

```bash
crontab -e   # comment out scripts/backup.sh line
```

Re-enable after migration completes.

## 2. Get an Immich API key

Immich UI -> Account Settings -> API Keys -> New (label it "migration"). Save the key.

## 3. Get the direct container IP (skips nginx/TLS overhead)

```bash
IMMICH_IP=$(docker inspect -f '{{range .NetworkSettings.Networks}}{{.IPAddress}} {{end}}' immich_server | awk '{print $1}')
echo $IMMICH_IP
```

## 4. Dry-run on a small subfolder first

Pick one year or album. The CLI runs inside a container with the source bind-mounted read-only:

```bash
docker run -it --rm \
  -v /opt/argento/docker/nextcloud/data/timothykim/files/Photos/<small-subfolder>:/import:ro \
  ghcr.io/immich-app/immich-cli:latest \
  upload --server http://$IMMICH_IP:2283/api --key <KEY> --dry-run --recursive /import
```

## 5. Real run on that subfolder, verify in UI

Drop `--dry-run`, run, then in Immich check: dates, GPS, thumbnails look correct.

## 6. Full migration in tmux

```bash
tmux new -s immich-migrate

docker run -it --rm \
  -v /opt/argento/docker/nextcloud/data/timothykim/files/Photos:/import:ro \
  ghcr.io/immich-app/immich-cli:latest \
  upload --server http://$IMMICH_IP:2283/api --key <KEY> --recursive -c 4 /import

# Ctrl-b d to detach; tmux attach -t immich-migrate to resume
```

Notes:
- No `--album` flag -- photos land in the main timeline, organized by date.
- `-c 4` is the default concurrency. Raise carefully; Immich's ingest + ML post-processing can saturate CPU/RAM.
- Safe to Ctrl-C and re-run -- the CLI hashes files client-side and skips anything already uploaded.

## 7. Watch resources during upload

In another terminal:

```bash
docker stats immich_server immich_postgres immich_machine_learning
```

If memory pressure gets bad, lower `-c` on the next restart.

## 8. Wait for background jobs

Immich UI -> Administration -> Jobs. Watch these drain (can take hours to days):

- Thumbnail Generation
- Metadata Extraction
- Smart Search (CUDA)
- Face Detection + Recognition (CUDA)
- Video Conversion (NVENC)

## 9. Verify counts

```bash
find /opt/argento/docker/nextcloud/data/timothykim/files/Photos/ -type f | wc -l
# Compare to Immich UI -> Administration -> Server Stats
```

If mismatch, re-run step 6 (will only upload the missing files).

## 10. Spot-check the library

Random samples across years, verify EXIF dates, GPS locations, faces grouping reasonably.

## 11. Clean up Nextcloud (only after you're satisfied)

Delete `Photos/` from Nextcloud UI -> empty trashbin -> verify `zfs list` shows `nextcloud/data` shrank.

## 12. Re-enable backup cron

Uncomment the cron line, then run `scripts/backup.sh` manually once to get a fresh full backup with the new Immich library.

## Rollback

If anything goes wrong before step 11, Nextcloud is untouched. Worst case: delete all Immich assets from UI (or wipe `/opt/argento/docker/immich/library/` and reinit the DB), start over.