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Use Snapper instead of a custom script for BTRFS snapshots

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Djeex
2026-09-09 13:18:59 +02:00
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content/en/3.serveex/2.core/1.installation.md
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@@ -89,6 +89,10 @@ Confirm the timezone guessed from your country.
*Guided, use entire disk* on the system drive, then *All files in one partition*, which gives you one big `/` plus a swap partition. Separate `/home` or `/var` partitions buy you very little here and mostly guarantee that one fills up while the others sit half empty. Pick LVM only if you already know you want snapshots or to grow volumes later. Your data disks are not touched at this stage, you'll mount them afterwards.
::warning{to="/serveex/advanced/btrfs-snapshots"}
__For advanced users:__ this is the moment to decide, not later. Picking *Manual* here instead of *Guided* lets you format the root partition as Btrfs instead of ext4, unlocking instant, near-free snapshots you can roll back to before a risky update or config change. Once this step is done and Debian is installed on ext4, switching to Btrfs isn't possible without wiping the disk and starting over. See **BTRFS snapshots** if you want to set it up, it's not a replacement for real backups either, a snapshot lives on the same disk.
::
Finish with *Finish partitioning and write changes to disk*, then confirm with *Yes*: this is the point of no return for that disk.
![Debian installer partitioning scheme, all files in one partition](/img/serveex/install/debian-install-partition.png)
@@ -97,10 +101,6 @@ Finish with *Finish partitioning and write changes to disk*, then confirm with *
✨ __Tip:__ what actually lives on that one partition, and why `/srv/docker` is where this guide puts every stack, is covered in **folders and partitions**.
::
::tip{icon="" to="/serveex/advanced/btrfs-snapshots"}
✨ __For advanced users:__ picking *Manual* here instead of *Guided* lets you format the root partition as Btrfs instead of ext4, unlocking instant, near-free snapshots you can roll back to before a risky update or config change. It's not a replacement for real backups, a snapshot lives on the same disk, see **BTRFS snapshots** if you want to set it up.
::
#### Mirror and surveys
Answer *No* to *Scan another installation medium?*, everything else comes from the network. For the mirror, pick any one in your country, or `deb.debian.org` which routes to a nearby one automatically, and leave the HTTP proxy field empty unless you actually have one. The popularity contest (anonymous package statistics) is yes or no, no consequence either way.