about summary refs log tree commit diff stats
path: root/notes/backup_disk.md
blob: d2e8f12e1b2ac20fe30888d9e2d66b1f8fb17835 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
<!--
nixos-config - My current NixOS configuration

Copyright (C) 2025 Benedikt Peetz <benedikt.peetz@b-peetz.de>
SPDX-License-Identifier: GPL-3.0-or-later

This file is part of my nixos-config.

You should have received a copy of the License along with this program.
If not, see <https://www.gnu.org/licenses/gpl-3.0.txt>.
-->

# How to create a backup disk (for `soispha.services.backup`)

## Find the disk

```bash
lsblk -o "NAME,MAJ:MIN,RM,SIZE,RO,FSTYPE,MOUNTPOINT,UUID"
# or
sudo fdisk -l
```

## Check it

```bash
sudo smartctl --test=short /dev/disk
# or better:
sudo smartctl --test=long /dev/disk

# Run this to avoid a test timeout (otherwise the disk might go to sleep):
sudo watch --differences --interval 60 smartctl --log=selftest /dev/disk
```

## Add it

```
sudo mkfs.btrfs /dev/disk --label backup
```

And change the `backupUuid` to the uuid of the new disk.