Already there. E.g. https://github.com/guardianproject/libsqlfs https://github.com/guardianproject/libsqlfs but I'd also count something like s3ql where the dat

Already there. E.g. https://github.com/guardianproject/libsqlfs https://github.com/guardianproject/libsqlfs but I'd also count something like s3ql where the data is stored as s3 objects.