[Borgbackup] Option to keep yearly backup counting from first backup?

[Dan Christensen]

As the OP said, that would cause the May 2017 backup to get deleted.
I suggested a workaround for that issue.

Dan

On Jan 15, 2020, Hans Mayer <HMayer6 at gmx.net> wrote:

> --keep-yearly=-1
> https://borgbackup.readthedocs.io/en/stable/usage/prune.html
>
> On 1/14/20 7:28 PM, Dan Christensen wrote:
>> If you use "borg rename" to rename the oldest backup to something with
>> a different prefix, and then limit to the main prefix when pruning,
>> the oldest backup will always stick around.  Then you'd get
>>
>> May 2017
>> Dec 2017
>> Dec 2018
>> Dec 2019
>>
>> etc, which might be good enough for what you want.
>>
>> Or, you could manually rename one May backup each year to ensure that
>> those ones are saved.
>>
>> You might also find that keeping monthly backups is fairly space
>> efficient.  When I've tried to save space by pruning old backups,
>> the repo size usually changes much less than I expected.
>>
>> Dan
>>
>> On Jan 14, 2020, Clemence Magnien <clemence.magnien at lip6.fr> wrote:
>>
>>> Hi,
>>>
>>> I hope this is the right place to post this question.
>>>
>>> I've been using borg for a while for backing up my home directory
>>> and am very satisfied with it.
>>>
>>> I'd like to keep:
>>>  - 4 daily backups
>>>  - 4 weekly backups
>>>  - 12 monthly backups
>>>  - 1 backup per year for all years since I've started using it.
>>>
>>> As I started using borg in may 2017, the keep-yearly option of prune wants to keep
>>> the latest backup in 2017 and remove the ones before that.
>>>
>>> I however would like to preserve as much of my history as possible, so
>>> I would like to keep:
>>>  - one backup for may 2017
>>>  - one backup for may 2018
>>>  - 12 monthly backups for 2019
>>>  - (and 4 weekly and 4 daily recent bakcups)
>>>
>>> Is there a possibility to count the backups you want to keep from the time
>>> I started using borg rather than counting one at the end of each calendar
>>> year?
>>>
>>> I know that I can use the --keep-within option but it seems a bit convoluted.
>>>
>>> Best,
>>> Clémence