Setting up snapper on Arch
==========================

https://www.youtube.com/watch?v=_97JOyC1o2o

Date: September 5, 2022

https://www.youtube.com/watch?v=_97JOyC1o2o

```
snapper
snap-pac
grub-btrfs
```

## Note

These are mostly my notes to remind myself, I'd Highly reccomend watching
[this-video]( https://www.youtube.com/watch?v=_97JOyC1o2o) or reading this
[arch wiki page](https://wiki.archlinux.org/title/snapper)

## /.snapshots already exists error

When I started running `sudo snapper -c root create-config /` I ran into the
following error.

![snapshots-already-exists.webp](https://dropper.waylonwalker.com/api/file/689b85ad-aa94-44d2-a05b-111de5f29400.webp)

```
Creating config failed (creating btrfs subvolume .snapshots failed since it already exists).
```

## remove existing snapshots

``` bash
sudo umount /.snapshots
sudo rm -r /.snapshots
```

## configure snapper

``` bash
sudo snapper -c root create-config /
sudo snapper -c home create-config /home
```

## btrfs subvolumes

``` bash
sudo btrfs subvolume list /
```

![btrfs-subvolume-list.webp](https://dropper.waylonwalker.com/api/file/dbd2e2ee-3bd7-47a3-a808-578f96d3d6d4.webp)

``` bash
sudo btrfs subvolume delete /.snapshots
sudo mkdir /.snapshots
```

##

``` bash
# you might not see snapshots mounted yet
lsblk

# if you check fstab you will see an entry for it
cat /etc/fstab

# mount it
sudo mount -a

# now you should see /.snapshots mounted
lsblk
```

You should now see `.snapshots` in mountpoints.

![lsblk-snapshots.webp](https://dropper.waylonwalker.com/api/file/c551d2be-0441-4dc7-8ee5-6ba600faa126.webp)

## Setting the default to @

so that you can boot into snapper snapshots

``` bash
sudo btrfs subvol get-default /
sudo btrfs subvol list /
```

![btrfs-subvol-get-default.webp](https://dropper.waylonwalker.com/api/file/231bb2a9-1679-4c42-9fd9-1fa6d7490cb2.webp)

``` bash
sudo btrfs subvol set-default 256 /
sudo btrfs subvol get-default /
## ID 256 gen 105268 top level 5 path @
```

![btrfs-subvol-set-default.webp](https://dropper.waylonwalker.com/api/file/1780cbfe-0c71-432e-bef6-00db6a7d9563.webp)

## snapper ls

``` bash
sudo snapper ls
```

![snapper-ls-init.webp](https://dropper.waylonwalker.com/api/file/24741b02-db31-41fe-957b-6eec2600db2b.webp)

leaving off for now

https://youtu.be/_97JOyC1o2o?t=909

## config

``` bash
sudo nvim /etc/snapper/configs/root
```

``` bash
ALLOW_GROUPS="wheel"

# limits for timeline cleanup
TIMELINE_MIN_AGE="1800"
TIMELINE_LIMIT_HOURLY="5"
TIMELINE_LIMIT_DAILY="7"
TIMELINE_LIMIT_WEEKLY="0"
TIMELINE_LIMIT_MONTHLY="0"
TIMELINE_LIMIT_YEARLY="0"
```

```
sudo chown -R :wheel /.snapshots/
```