Btrfs before install notes

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	* Then Umount the actual /dev/vda2 to replace by the '''@''' subvolume		* Then Umount the actual /dev/vda2 to replace by the '''@''' subvolume
		+
		+	mount /dev/vda2 -o subvolid=256 /mnt
		+	mount /dev/vda2 -o subvolid=257 /mnt/home
		+	mount /dev/vda2 -o subvolid=258 /mnt/.snapshots
		+	mount /dev/vda2 -o subvolid=5 /mnt/btrfsroot
		+	mount /dev/vda1 /mnt/efi
		+
		+	==It's pactsrap time now==
		+
		+	pacstrap -K /mnt base linux base-devel grub sudo git less nano efibootmgr btrfs-progs snapper snap-pac grub-btrfs tar sudo
		+
		+	Sodding network here man...
		+
		+	===And now...===

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Revision as of 16:38, 29 November 2023

Set up BTRFS before install, according to this guide

(You are booted in the Arch Live environment meant to install Arch on your machine or VM)

Contents 1 Before Pacstrap 1.1 Partitionning 1.2 Formatting 1.3 Start mounting and playing with BTRFS (04:50) 2 It's pactsrap time now 2.1 And now...

Before Pacstrap

loadkeys for your keyboard

Select device with fdisk -l ; VM devices starts with V here, as in /dev/vda1 et

Partitionning

fdisk /dev/vda

• Use g to create a GPT partition table on /dev/vda1

• Use n to create a first EFI partition

• Use +300M to make it 300M in size

• Use t to change its type to 1 to make it an EFI partition

• Use n to create a second partition for the rest of the disk

• Use p to check for values and mistakes

• Use w to write the modifications and exit the interactive fdisk prompt

Formatting

• mkfs.fat -F 32 /dev/vda1
• mkfs.btrfs /dev/vda2

Start mounting and playing with BTRFS (04:50)

• mount /dev/vda2 /mnt

• create subvolumes with

btrfs subvolume create /mnt/@
btrfs subvolume create /mnt/@home
btrfs subvolume create /mnt/@snapshots

• Check your existing subvolumes and their ID :

btrfs subvolume list /

(Reminder : subvolumes don't create snapshots of nested subvolumes ; here @ won't contain @home or @snapshots data)

• Create mountpoints

mkdir /mnt/efi
mkdir /mnt/home
mkdir /mnt/.snapshots
mkdir /mnt/btrfsroot

• Then Umount the actual /dev/vda2 to replace by the @ subvolume

mount /dev/vda2 -o subvolid=256 /mnt
mount /dev/vda2 -o subvolid=257 /mnt/home
mount /dev/vda2 -o subvolid=258 /mnt/.snapshots
mount /dev/vda2 -o subvolid=5 /mnt/btrfsroot
mount /dev/vda1 /mnt/efi

It's pactsrap time now

pacstrap -K /mnt base linux base-devel grub sudo git less nano efibootmgr btrfs-progs snapper snap-pac grub-btrfs tar sudo

Sodding network here man...

And now...