root on ZFS Install
In order to import a ZFS pool, ZFS must be enabled in the NixOS configuration file.
Make sure zfs is in boot.supportedFilesystems.
Rebuild NixOS and switch to the new configuration.
Check zfs is working,modprobe zfs should show no problems.
ZFS should now work.
Pool
Create a new pool or mount an existing pool.
Creating a pool
Create a pool using the disk ID and set it to 4k block size as default with ashift=12.
Export the pool after creation.
Using an Existing pool
The existing pool assigning it to be relative to /mnt with -R, the -N flag will tell ZFS not to mount any datasets.
Setup Datasets
Mount all datasets partitions to /mnt.
Filesystem
Setup datasets. Set all legacy.
Mount Datasets
Mount the datasets:
Boot
Create a 512M esp, mount to /boot
Format boot and mount.
Swap
Create a partition of desired size.
Enable swap.
Install
Setup config in /mnt/etc/nixos and install.
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