BORG-REPO-COMPRESS(1) borg backup tool BORG-REPO-COMPRESS(1)

borg-repo-compress - Repository (re-)compression

borg [common options] repo-compress [options]

Repository (re-)compression (and/or re-obfuscation).

Reads all chunks in the repository and recompresses them if they are not already using the compression type/level and obfuscation level given via --compression.

If the outcome of the chunk processing indicates a change in compression type/level or obfuscation level, the processed chunk is written to the repository. Please note that the outcome might not always be the desired compression type/level - if no compression gives a shorter output, that might be chosen.

Please note that this command can not work in low (or zero) free disk space conditions.

If the borg repo-compress process receives a SIGINT signal (Ctrl-C), the repo will be committed and compacted and borg will terminate cleanly afterwards.

Both --progress and --stats are recommended when borg repo-compress is used interactively.

You do not need to run borg compact after borg repo-compress.

See borg-common(1) for common options of Borg commands.

select compression algorithm, see the output of the "borg help compression" command for details.
print statistics

# recompress repo contents
$ borg repo-compress --progress --compression=zstd,3
# recompress and obfuscate repo contents
$ borg repo-compress --progress --compression=obfuscate,1,zstd,3


borg-common(1)

The Borg Collective

2025-01-07