How to keep two backups for end of month and first day of a month [Support] #1306

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opened 2026-05-07 08:11:52 +00:00 by elhananjair · 1 comment

elhananjair commented 2026-05-07 08:11:52 +00:00

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What I'm trying to do and why

Hello, I wanted to keep backups that were taken on the first and last days of each month. For the time being, I was able to keep the last day of the month using keep_monthly=-1, but I'm not sure how to add the first day of the month as well.

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Actual behavior

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Expected behavior

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Other notes / implementation ideas

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borgmatic version

2.1.5

borgmatic installation method

package

Borg version

borg 1.4.2

Python version

Python 3.13.13

Database version (if applicable)

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Operating system and version

Fedora Linux 43 (WSL) x86_64

### What I'm trying to do and why Hello, I wanted to keep backups that were taken on the first and last days of each month. For the time being, I was able to keep the last day of the month using `keep_monthly=-1`, but I'm not sure how to add the first day of the month as well. ### Steps to reproduce _No response_ ### Actual behavior _No response_ ### Expected behavior _No response_ ### Other notes / implementation ideas _No response_ ### borgmatic version 2.1.5 ### borgmatic installation method package ### Borg version borg 1.4.2 ### Python version Python 3.13.13 ### Database version (if applicable) _No response_ ### Operating system and version Fedora Linux 43 (WSL) x86_64

witten commented 2026-05-07 21:39:22 +00:00

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Unfortunately I don't think that's currently possible using borgmatic's keep_* options, which are built atop Borg prune --keep-* flags. If you need a really custom pruning strategy like this, you could try disabling automatic pruning entirely and then use borgmatic delete to delete archives that you don't want to keep. In that scenario though, you'd be responsible for determining those archives yourself.

Unfortunately I don't think that's currently possible using borgmatic's `keep_*` options, which are built atop [Borg `prune --keep-*` flags](https://borgbackup.readthedocs.io/en/stable/usage/prune.html). If you need a really custom pruning strategy like this, you could try disabling automatic pruning entirely and then use `borgmatic delete` to delete archives that you don't want to keep. In that scenario though, you'd be responsible for determining those archives yourself.

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label 2026-05-07 21:39:28 +00:00

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