Backups

I’ve been backing my homelab up with duplicacy (See Backing Up the Cluster Using Duplicacy), but I’m fed up with it returning a 0 exit code even if there’s a problem with the backup. This makes me have to do a lot of annoying rummaging through log output to be sure that a backup actually worked, so I decided to switch to restic. In this blog entry, I’m going to explain how to create a jail in TrueNAS, mount directories you want to back up into the jail, install restic, and how to use it to back up to Backblaze b2. ...

Do not use duplicacy! TL;DR: duplicacy is unusable if you’re serious about backing up your data. Use restic instead! I wanted to ensure any data I put into my ARM k3s cluster is backed up to prevent data loss. I no longer recommend duplicacy. Instead, read my article on restic backups on TrueNas instead. 2025 edit: This post is only here for historical reasons. Do NOT use duplicacy. It does not report backup errors in its exit code. You will have to parse its logs yourself and hope your regex didn’t miss an error condition. And every update, you’ll have to check and make sure it hasn’t changed anything that your regex was catching. Backups are supposed to be something you set up once and ignore other than to do periodic restore tests, and duplicacy fails that simple criteria. ...