Re: Convert Differential Backup to Full?

On Thu, 30 Dec 2021 22:34:16 +0100
Denis Corbin <[email protected]> wrote:

> First, you can also probably solve your problem while performing the
> 5th backup using the --comparison-field option to restrict inode
> change that trigger files to be resaved.

Cool, I didn't know about this option, thank you. However in my case
the file metadata that changed was in the MP3 container (volume
loudness was normalised), not filesystem metadata. So dar is correct in
wanting to backup these newly modified files.

> you can "turn" a differential backup
> into a full backup with the help of the full backup of reference
> using the "full-from-diff" target

This is a great feature, I didn't know about this flag. Ideally though
it would take as parameters the full reference backup and all 4 of the
differential backups in one operation to reduce total I/O that has to
be done by an order of magnitude.

I know that instead of doing full-from-diff 4 times it's easier just to
do a full backup again--and that's what I ended up doing.

Thanks for your help on this issue, I think I understand that making a
full new backup is the way to go.

Daniel B.