Add storage-class support to the s3_media_upload command and mention matrix-synapse-s3-storage-provider-migrate script

docs/configuring-playbook-synapse-s3-storage-provider.md

@@ -70,10 +70,16 @@ Then use the following commands (`$` values come from environment variables - th
   - `$UPDATE_DB_DURATION` is influenced by the `matrix_synapse_ext_synapse_s3_storage_provider_update_db_day_count` variable (defaults to `0`)
   - `$UPDATE_DB_DURATION` defaults to `0d` (0 days), which means **include files which haven't been accessed for more than 0 days** (that is, **all files will be included**).
 - `s3_media_upload check-deleted $MEDIA_PATH` - check whether files in the local cache still exist in the local media repository directory
-- `s3_media_upload upload $MEDIA_PATH $BUCKET --delete --endpoint-url $ENDPOINT` - uploads locally-stored files to S3 and deletes them from the local media repository directory
+- `s3_media_upload upload $MEDIA_PATH $BUCKET --delete --storage-class $STORAGE_CLASS --endpoint-url $ENDPOINT` - uploads locally-stored files to S3 and deletes them from the local media repository directory
 
-The `upload` command may take a lot of time to complete.
+The `s3_media_upload upload` command may take a lot of time to complete.
 
+Instead of running the above commands manually in the shell, you can also run the `/usr/local/bin/matrix-synapse-s3-storage-provider-migrate` script which will run the same commands automatically. We demonstrate how to do it manually, because:
+
+- it's what the upstream project demonstrates and it teaches you how to use the `s3_media_upload` tool
+- allows you to check and verify the output of each command, to catch mistakes
+- includes progress bars and detailed output for each command
+- allows you to easily interrupt slow-running commands, etc. (the `/usr/local/bin/matrix-synapse-s3-storage-provider-migrate` starts a container without interactive TTY support, so `Ctrl+C` may not work and you and require killing via `docker kill ..`)
 
 ### Using another tool in combination with `s3_media_upload`
 

roles/matrix-synapse/templates/synapse/ext/s3-storage-provider/env.j2

@@ -4,6 +4,7 @@ AWS_DEFAULT_REGION={{ matrix_synapse_ext_synapse_s3_storage_provider_config_regi
 
 ENDPOINT={{ matrix_synapse_ext_synapse_s3_storage_provider_config_endpoint_url }}
 BUCKET={{ matrix_synapse_ext_synapse_s3_storage_provider_config_bucket }}
+STORAGE_CLASS={{ matrix_synapse_ext_synapse_s3_storage_provider_config_storage_class }}
 
 MEDIA_PATH=/matrix-media-store-parent/{{ matrix_synapse_media_store_directory_name }}
 

roles/matrix-synapse/templates/synapse/ext/s3-storage-provider/usr-local-bin/matrix-synapse-s3-storage-provider-migrate.j2

@@ -10,4 +10,4 @@
 	--network={{ matrix_docker_network }} \
 	--entrypoint=/bin/bash \
 	{{ matrix_synapse_docker_image_final }} \
-	-c 's3_media_upload update-db $UPDATE_DB_DURATION && s3_media_upload --no-progress check-deleted $MEDIA_PATH && s3_media_upload --no-progress upload $MEDIA_PATH $BUCKET --delete --endpoint-url $ENDPOINT'
+	-c 's3_media_upload update-db $UPDATE_DB_DURATION && s3_media_upload --no-progress check-deleted $MEDIA_PATH && s3_media_upload --no-progress upload $MEDIA_PATH $BUCKET --delete --storage-class $STORAGE_CLASS --endpoint-url $ENDPOINT'