[Borgbackup] Recreate segments after changing max_segment_size

[Sebastian Felis]

Hi,

first of all: Thank you so much for this awesome backup tool. It's 
really a joy using it.


I have several borg repos with small segment sizes of 5 MB. I would like 
to recreate the segments to a larger size for better repo backup with 
rsync/rclone. I am aware of the recreate command and its documentation 
and I am using borg 1.1.14 on debian buster.

A conversion was successful for a smaller repo with "recreate 
--recompress always" after changing the max_segment_size. For my TB 
sized media repo it seems to be a bit slow.

Without the option "--recompress always" the smaller segments are not 
repacked to larger segments.


My questions:

1) What is the best way just to repack all chunks to a new segment size 
for a repo?

2) Does the recreate command on a repo honor deduplication and repack 
the unique chunks in segments only once? Even with "--recompress always" 
option?

BR

Sebastian