Normalised identifier missing a slash at the beginning

[Suranex]

First of all, thank you very much for this FAL adapter! We are now using it for the first time in a large project and it seems to be working well.

Unlike the file system FAL adapter, the FAL adapter does not use a slash at the beginning of the identifier. This causes problems when migrating existing data (copying existing data to a bucket, setting up the existing file mount on S3).

Identifier of the file system FAL: /someFolder/Fallbackbild2.jpg
Identifier of the aus_driver_amazon_s3 FAL: someFolder/Fallbackbild2.jpg

This becomes particularly problematic with (existing) forms. If you save them after the changeover without changing the persistenceManager/allowedFileMounts, you will receive an error message. The standard TYPO3 file mount expects the identifier to begin with “1:/form_definitions/”.

If this can no longer be changed, at least a migration instruction would be useful if you want to migrate to this FAL adapter at a later date.