Spent the whole afternoon setting up https://www.borgbackup.org/ to backup my laptop to cloud storage, fully encrypted, compressed and deduplicated. Also wrote a daily backup shell script to manage various source locations and backup conditions (e.g. presence of external SSDs). The compression uses LZ4 by default but can also use zstd and others. Together with the dedupe feature it seems very efficient. Of the original 54.9 GB so far, it's 41.9 GB compressed and only 19.7 GB deduped...
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@JulianOliver @toxi i've been using borg for a bunch of my servers, too. i've started using restic which is conceptually quite similar but a lot faster in my tests https://restic.net/
@toxi Great! Have been using it on many servers, for many years. It got me out of some very difficult corners, and replaced Duplicity.
I hear Borg is accepting vibed code now however. Wish it weren't so, given backup infra is the last place you want slop. Some comfort in that there are a lot of eyes on the code, a lot of cards in the game!