# Migrating the Database

With some updates the database serialization for changes. This requires a
migration process. You need to follow this procedure either with every update.

## 1. Export the database

Use the `jellytool` of the previous version to export the database to JSON.

```sh
mv /path/to/db /path/to/db.old # Rename the DB to avoid conflict later
jellytool.old migrate export /path/to/db.old export /tmp/jdb
```

## 2. Run migrations on the JSON dump

> This is not implemented yet. It usually just works without anyway.

## 3. Import the database

Now import your library back to where it usually lives using the `jellytool` of
the current version.

```sh
jellytool migrate export /path/to/db import /tmp/jdb
```

## 4. Delete old Databases

Delete the old database and the JSON dump, they are not required anymore.

> [!CAUTION]
> Confirm that everything still works and no data ist lost

```
rm /path/to/db.old
rm -r /tmp/jdb
```