Delivery Method: Copy Raw files - How to use it?

[Ivan (ivan-opmed)]

Hey guys,

I am trying to use the feature of Copy raw files
https://docs.airbyte.com/platform/using-airbyte/delivery-methods#metadata-sample

As I see when I apply the copy-raw-files flag for S3 source or SFTP bulk source it downloads files to the local /tmp folder

2025-11-18 21:00:12,594 [pool-4-thread-1]	INFO	i.a.w.i.VersionedAirbyteStreamFactory(internalLog$io_airbyte_airbyte_commons_worker):248 - Starting to download the file /csv/TEST_FILE_1.csv with size: 1.43 MB (0.00 GB) to '/tmp/airbyte-file-transfer/csv/TEST_FILE_1.csv' with size: 1.43 MB (0.00 GB), available disk space: 17,485.34 MB (17.08 GB),available memory: 9,227.75 MB (9.01 GB).
2025-11-18 21:00:12,597 [pool-4-thread-1]	INFO	i.a.w.i.VersionedAirbyteStreamFactory(internalLog$io_airbyte_airbyte_commons_worker):248 - Time taken to download the file /csv/TEST_FILE_1.csv: 0.15 seconds.
2025-11-18 21:00:12,598 [pool-4-thread-1]	INFO	i.a.w.i.VersionedAirbyteStreamFactory(internalLog$io_airbyte_airbyte_commons_worker):248 - File csv/TEST_FILE_1.csv successfully written to /tmp/airbyte-file-transfer.

But on the destination it will store it as csv output file which include metadata of it - only 1 row which says that the file was downloaded and the size of it, name and path.

"_airbyte_raw_id","_airbyte_extracted_at","_airbyte_meta","_airbyte_generation_id","id","bytes","folder","file_name","mime_type","created_at","source_uri","updated_at"
"019a98c4-a264-7358-a7bd-442832d758b2",1763499611229,"{""sync_id"":8,""changes"":[]}",1,"",1382851,"/csv","TEST_FILE1.csv","","","sftp://airbyte@host.docker.internal:2222/csv/TEST_FILE1.csv","2025-11-12T13:34:46.000000Z"

Whats the proper way to do it? Our use-case is to transfer raw(binary) files from S3 or SFTP directly to S3 (csv file was used just as test)

I was trying also to mount disk under the helm chart deployment for source/destination to enable access for both containers but it was unsuccessfully.

Who else used this feature and whats the real purpose of it if it's not working for us as described?

Specs:

Helm Chart V2
Airbyte: 2.0.1
Repository: https://airbytehq.github.io/charts
Version: "2.0.19"