Re: convert old full + differentials into new full

On 17/04/2021 12:38, Graham Cobb wrote:
> On 16/04/2021 20:39, Denis Corbin wrote:
>> There is no best solution for all cases, it always depends on the
>> context/environment/"data life".
> 
> By the way, I use Manuel Iglesias' DAR_automatic_backup.sh script to
> deal with this issue. Although it doesn't do any backup combining, it
> does decide whether to take a new incremental or to go back one or more
> steps and take a new incremental from that point, or even to take a new
> full backup and start again. All automatic decisions depending on how
> much stuff has changed since the various incrementals.

yes, this is a good suggestion
> 
> It works well for me - I have been using it for many years and it mostly
> maintains between 1 and 4 incrementals at any time. The only thing is
> that because it sometimes decides to delete a lot of backups and create
> a new full backup or a new big incremental, which can take days (and can
> fail of course), I archive the previous backups until the run has
> completed so I am not left with no backup during the time this is
> happening. It also depends on dar_manager, which needs a LOT of memory
> when it runs.
> 
> As my backups end up dependent for quite a long time on an old full
> backup, I also do periodic automatic tests to check the integrity of the
> backup set - no point discovering too late that the original full backup
> got corrupted some time in the last 3 years!
> 
> 
> 
Thanks for this interesting feedback!

Cheers,
Denis