backup.sh: Improve prune command to reduce number of archives

Signed-off-by: Florian Pritz <bluewind@xinu.at>

1 files changed, 1 insertions, 1 deletions

diff --git a/backup.sh b/backup.sh
index 8985acb..4c143d2 100755
--- a/backup.sh
+++ b/backup.sh
@@ -87,7 +87,7 @@ backup_borg() {
 	fi
 
 	borg create "${options[@]}" "$dst::backup-$(date "+%Y%m%d-%H%M%S")" "$src"
-	borg prune -v --keep-within 6m "$dst"
+	borg prune --keep-within 7d --keep-daily 7 --keep-weekly 12 --keep-monthly 12 --keep-yearly 3 -v "$dst"
 }
 
 ### support functions below ###