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  rpool/sys</pre>
  rpool/sys</pre>
==== System datasets ====
==== System datasets ====
<pre>zfs create -o canmount=off -o mountpoint=none bpool/sys/BOOT
<pre>zfs create -o canmount=off -o mountpoint=none bpool/NixOS/BOOT
zfs create -o canmount=off -o mountpoint=none rpool/sys/ROOT
zfs create -o canmount=off -o mountpoint=none rpool/NixOS/ROOT
zfs create -o canmount=off -o mountpoint=none rpool/sys/DATA
zfs create -o canmount=off -o mountpoint=none rpool/NixOS/DATA
zfs create -o canmount=off -o mountpoint=/ rpool/sys/DATA/local
zfs create -o canmount=off -o mountpoint=/ rpool/NixOS/DATA/local
zfs create -o canmount=off -o mountpoint=/ rpool/sys/DATA/safe
zfs create -o canmount=off -o mountpoint=/ rpool/NixOS/DATA/safe
zfs create -o mountpoint=legacy -o canmount=noauto bpool/sys/BOOT/default
zfs create -o mountpoint=legacy -o canmount=noauto bpool/NixOS/BOOT/default
zfs create -o mountpoint=legacy -o canmount=noauto rpool/sys/ROOT/default
zfs create -o mountpoint=legacy -o canmount=noauto rpool/NixOS/ROOT/default
mount -t zfs rpool/sys/ROOT/default /mnt
mount -t zfs rpool/NixOS/ROOT/default /mnt
mkdir /mnt/boot
mkdir /mnt/boot
mount -t zfs bpool/sys/BOOT/default /mnt/boot
mount -t zfs bpool/NixOS/BOOT/default /mnt/boot
for i in {nix,}; do
for i in {nix,}; do
zfs create -o canmount=on -o mountpoint=legacy rpool/sys/DATA/local/$i
zfs create -o canmount=on -o mountpoint=legacy rpool/NixOS/DATA/local/$i
mkdir -p /mnt/$i
mkdir -p /mnt/$i
mount -t zfs rpool/sys/DATA/local/$i /mnt/$i
mount -t zfs rpool/NixOS/DATA/local/$i /mnt/$i
done
done
for i in {root,home,home/user}; do
for i in {root,home,home/user}; do
zfs create -o canmount=on -o mountpoint=legacy rpool/sys/DATA/safe/$i
zfs create -o canmount=on -o mountpoint=legacy rpool/NixOS/DATA/safe/$i
mkdir -p /mnt/$i
mkdir -p /mnt/$i
mount -t zfs rpool/sys/DATA/safe/$i /mnt/$i
mount -t zfs rpool/NixOS/DATA/safe/$i /mnt/$i
done
done
chmod 750 /mnt/root
chmod 750 /mnt/root
chmod 700 /mnt/home/user</pre>
chmod 700 /mnt/home/user</pre>
=== System Installation ===
Except a few additional options, the procedure is identical with normal installation.
==== General ====
Generate Host ID<pre>head -c 8 /etc/machine-id</pre>
Generate and edit config file<pre>nixos-generate-config --root /mnt
vim /mnt/etc/nixos/configuration.nix</pre>
Add ZFS:
<pre>boot.supportedFilesystems = [ "zfs" ];
networking.hostId = "deadbeef";</pre>
If not using <code>/dev/disk/by-id</code>:<pre>boot.zfs.devNodes = "/dev/disk/by-path";</pre>
If swap partition:<pre>swapDevices = [
{
device = "/dev/disk/by-id/disk1-part4";
randomEncryption.enable = true;
}
];</pre>
==== GRUB ====
===== UEFI =====
For UEFI, delete systemd-boot and other <code>boot.loader</code> options and use GRUB:
<pre>boot.loader = {
# grub.efiInstallAsRemovable = true;
efi.canTouchEfiVariables = true;
efi.efiSysMountPoint = "/boot/efi";
grub.enable = true;
grub.version = 2;
grub.copyKernels = true;
grub.efiSupport = true;
grub.devices = [ "nodev" ];
};</pre>
For multiple disks, mirror EFI system partition <code>/boot/efi</code> with <code>boot.loader.grub.mirroredBoots</code> option. See <code>man configuration.nix</code>.
===== BIOS =====
For BIOS, delete <code>boot.loader</code> options and use GRUB:
<pre>boot.loader = {
grub.enable = true;
grub.version = 2;
grub.copyKernels = true;
grub.devices = [ "/dev/disk/by-id/disk1" "/dev/disk/by-id/disk2" ];
};</pre>
==== Installation ====
After finishing configuration, install system:
<pre>nixos-install --root /mnt</pre>
=== Finishing installation ===
Take an initial snapshot:
<pre>zfs snapshot -r rpool/sys@install
zfs snapshot -r bpool/sys@install</pre>
Unmount EFI system partition:<pre>umount /mnt/boot/efi</pre>Also unmount mirrored ESP, if any.
Export pools:<pre>zpool export bpool
zpool export rpool</pre>
Retrieved from "https://wiki.nixos.org/wiki/User:2r/NixOS_on_ZFS"