ZFS: Difference between revisions

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==== '''Simple NixOS ZFS installation''' ====

==== '''Simple NixOS ZFS in root installation''' ====

Start from here in the NixOS manual: [https://nixos.org/manual/nixos/stable/#sec-installation-manual].

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'''Note:''' zpool config can significantly affect performance (especially the ashift option) so you may want to do some research. The [https://jrs-s.net/2018/08/17/zfs-tuning-cheat-sheet/ ZFS tuning cheatsheet] or [https://wiki.archlinux.org/title/ZFS#Storage_pools ArchWiki] is a good place to start.

zpool create -O encryption=on -O keyformat=passphrase -O keylocation=prompt -O compression=zstd -O mountpoint=none -O xattr=sa -O acltype=posixacl -o ashift=12 zpool /dev/~~nvme0n1p2~~

zpool create -O encryption=on -O keyformat=passphrase -O keylocation=prompt -O compression=zstd -O mountpoint=none -O xattr=sa -O acltype=posixacl -o ashift=12 zpool /dev/nvme0n1p3

# enter the password to decrypt the pool at boot

Enter new passphrase:

Re-enter new passphrase:

# Create datasets

zfs create zpool/root

zfs create zpool/nix

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</syntaxhighlight>

'''~~Make~~ fat filesystem ~~on boot partition~~'''

'''Format boot partition with fat as filesystem'''

mkfs.fat -F 32 -n boot /dev/nvme0n1p1

</syntaxhighlight>

'''Enable swap'''

mkswap -L swap /dev/nvme0n1p2

swapon

</syntaxhighlight>

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'''Installation:'''

~~Install: [https:~~//~~nixos.org~~/~~manual~~/~~nixos~~/~~stable~~/~~#sec-installation-manual-installing]~~

We're now using Disk IDs and not the device name because device names might change and NixOS Config Generation will be using the IDs anyway. Get the device ID in <code>/dev/disk/by-id/</code>, in our case here it is <code>nvme-SKHynix_HFS512GDE9X081N_FNB6N634510106K5O</code>

~~Jump to "2. UEFI systems"~~

# Mount boot

mkdir -p /mnt/boot

mount /dev/disk/by-~~partlabel~~/boot /mnt/~~boot~~

mount /dev/disk/by-id/nvme-SKHynix_HFS512GDE9X081N_FNB6N634510106K5O-part1 /mnt/boot

# Generate the nixos config

nixos-generate-config --root /mnt

...

writing /mnt/etc/nixos/hardware-configuration.nix...

writing /mnt/etc/nixos/configuration.nix...

For more hardware-specific settings, see https://github.com/NixOS/nixos-hardware.

</syntaxhighlight>

~~Jump to "4." ..~~. /mnt/etc/nixos/configuration.nix ~~...~~

Now edit the configuration.nix that was just created in <code>/mnt/etc/nixos/configuration.nix</code> and make sure to have at least the following content in it.

~~Continue from here and add this boot loader~~ and ~~filesystems config~~ to ~~your configuration~~.~~nix:~~

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}

</syntaxhighlight>

Now you may install nixos with <code>nixos-install</code>

== Importing on boot ==

@@ Line 42: / Line 42: @@
-==== '''Simple NixOS ZFS installation''' ====
+==== '''Simple NixOS ZFS in root installation''' ====
 Start from here in the NixOS manual: [https://nixos.org/manual/nixos/stable/#sec-installation-manual].
@@ Line 112: / Line 112: @@
 '''Note:''' zpool config can significantly affect performance (especially the ashift option) so you may want to do some research. The [https://jrs-s.net/2018/08/17/zfs-tuning-cheat-sheet/ ZFS tuning cheatsheet] or [https://wiki.archlinux.org/title/ZFS#Storage_pools ArchWiki] is a good place to start.
 <syntaxhighlight lang="bash">
-zpool create -O encryption=on -O keyformat=passphrase -O keylocation=prompt -O compression=zstd -O mountpoint=none -O xattr=sa -O acltype=posixacl -o ashift=12 zpool /dev/nvme0n1p2
+zpool create -O encryption=on -O keyformat=passphrase -O keylocation=prompt -O compression=zstd -O mountpoint=none -O xattr=sa -O acltype=posixacl -o ashift=12 zpool /dev/nvme0n1p3
+# enter the password to decrypt the pool at boot
+Enter new passphrase:
+Re-enter new passphrase:
+# Create datasets
 zfs create zpool/root
 zfs create zpool/nix
@@ Line 143: / Line 148: @@
 </syntaxhighlight>
-'''Make fat filesystem on boot partition'''
+'''Format boot partition with fat as filesystem'''
 <syntaxhighlight lang="bash">
 mkfs.fat -F 32 -n boot /dev/nvme0n1p1
+</syntaxhighlight>
+'''Enable swap'''
+<syntaxhighlight lang="bash">
+mkswap -L swap /dev/nvme0n1p2
+swapon
 </syntaxhighlight>
@@ Line 151: / Line 162: @@
 '''Installation:'''
-Install: [https://nixos.org/manual/nixos/stable/#sec-installation-manual-installing]
+We're now using Disk IDs and not the device name because device names might change and NixOS Config Generation will be using the IDs anyway. Get the device ID in <code>/dev/disk/by-id/</code>, in our case here it is <code>nvme-SKHynix_HFS512GDE9X081N_FNB6N634510106K5O</code>
-Jump to "2. UEFI systems"
+# Mount boot
 <syntaxhighlight lang="bash">
 mkdir -p /mnt/boot
-mount /dev/disk/by-partlabel/boot /mnt/boot
+mount /dev/disk/by-id/nvme-SKHynix_HFS512GDE9X081N_FNB6N634510106K5O-part1 /mnt/boot
+# Generate the nixos config
+nixos-generate-config --root /mnt
+...
+writing /mnt/etc/nixos/hardware-configuration.nix...
+writing /mnt/etc/nixos/configuration.nix...
+For more hardware-specific settings, see https://github.com/NixOS/nixos-hardware.
 </syntaxhighlight>
-Jump to "4." ... /mnt/etc/nixos/configuration.nix ...
+Now edit the configuration.nix that was just created in <code>/mnt/etc/nixos/configuration.nix</code> and make sure to have at least the following content in it.
-Continue from here and add this boot loader and filesystems config to your configuration.nix:
 <syntaxhighlight lang="nix">
@@ Line 208: / Line 223: @@
 }
 </syntaxhighlight>
+Now you may install nixos with <code>nixos-install</code>
 == Importing on boot ==