You might not even like rsync. Yeah it’s old. Yeah it’s slow. But if you’re working with Linux you’re going to need to know it.
In this video I walk through my favorite everyday flags for rsync.
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Here’s a companion blog post, where I cover a bit more detail: https://vkc.sh/everyday-rsync
Also, @BreadOnPenguins made an awesome rsync video and you should check it out: https://www.youtube.com/watch?v=eifQI5uD6VQ
Lastly, I left out all of the ssh setup stuff because I made a video about that and the blog post goes into a smidge more detail. If you want to see a video covering the basics of using SSH, I made one a few years ago and it’s still pretty good: https://www.youtube.com/watch?v=3FKsdbjzBcc
Chapters:
1:18 Invoking rsync
4:05 The --delete flag for rsync
5:30 Compression flag: -z
6:02 Using tmux and rsync together
6:30 but Veronica… why not use (insert shiny object here)
I would generally argue that rsync is not a backup solution. But it is one of the best transfer/archiving solutions.
Yes, it is INCREDIBLY powerful and is often 90% of what people actually want/need. But to be an actual backup solution you still need infrastructure around that. Bare minimum is a crontab. But if you are actually backing something up (not just copying it to a local directory) then you need some logging/retry logic on top of that.
At which point you are building your own borg, as it were. Which, to be clear, is a great thing to do. But… backups are incredibly important and it is very much important to understand what a backup actually needs to be.
Ive personally used rsync for backups for about…15 years or so? Its worked out great. An awesome video going over all the basics and what you can do with it.
And I generally enjoy Veronica’s presentation. Knowledgable and simple.
It works fine if all you need is transfer, my issue with it it’s just not efficient. If you want a “time travel” feature, your only option is to duplicate data. Differential backups, compression, and encryption for off-site ones is where other tools shine.
I have it add a backup suffix based on the date. It moves changed and deleted files to another directory adding the date to the filename.
It can also do hard-link copied so that you can have multiple full directory trees to avoid all that duplication.
No file deltas or compression, but it does mean that you can access the backups directly.
Thanks! I was not aware of these options, along with what other poster mentioned about
--link-dest. These do turn rsync into a backup program, which is something the root article should explain!(Both are limited in some aspects to other backup software, but they might still be a simpler but effective solution. And sometimes simple is best!)
Rsnapshot. It uses rsync, but provides snapshot management and multiple backup versioning.
Yeah it’s slow
What’s slow about async? If you have a reasonably fast CPU and are merely syncing differences, it’s pretty quick.
It’s single thread, one file at a time.
Why videos? I feel like an old man yelling at clouds every time something that sounds interesting is presented in a fucking video. Videos are so damn awful. They take time, I need audio and I can’t copy&paste. Why have they become the default for things that should’ve been a blog post?
They linked blog post with the video: https://vkc.sh/everyday-rsync/
It’s slow?!?
Surely restic or borg would be better for backups?
Rsync can send files and not delete stuff, but there’s no versioning or retention settings.
Duplicity also works really well for backups and you can encrypt them with your own openpgp key.
