z3: Feature request: allow adding metadata

[rahulbhatu]

Hi Team,

is it possible with z3 that we can add metadata to backup, As we have a use case where we upload files of larger size
and we have to update the metadata after upload by copying the file again in s3.
s3 only allows adding metadata on upload and update metadata on existing object by again copying the file in s3.

any thoughts or workaround for this ? as after uploading, copying same object in s3 just to update the metadata is
time consuming operation.

Thanks
Rahul