Installing FreeBSD 9 Root on ZFS with less fuss

WIP! DO NOT USE UNLESS YOU KNOW WHAT YOU ARE DOING.

Based the 9.0-REL page.

Creating a bootable ZFS filesystem

Replace mirror as needed, and add all disks that should be part of the pool.

Installing FreeBSD to the ZFS file system

  1. Create ZFS filesystem hierarchy

    ZFS apparently requires zroot/usr if I want zroot/usr/local

    zfs create                      -o setuid=off   zroot/tmp
    zfs create                                      zroot/usr
    zfs create                                      zroot/usr/local
    zfs create                      -o setuid=off   zroot/home
    zfs create -o compression=lzjb  -o setuid=off   zroot/usr/ports
    zfs create -o compression=off   -o setuid=off   zroot/usr/ports/distfiles
    zfs create -o compression=lzjb  -o setuid=off   zroot/usr/src
    zfs create                                      zroot/usr/obj
    zfs create                      zroot/var
    zfs create                      zroot/var/log
    zfs create -o setuid=off        zroot/var/tmp
    chmod 1777 /mnt/var/tmp /mnt/tmp
    export DIST=/usr/freebsd-dist
    tar -C /mnt -xf ${DIST}/base.txz
    tar -C /mnt -xf ${DIST}/games.txz 
    tar -C /mnt -xf ${DIST}/kernel.txz 
    tar -C /mnt -xf ${DIST}/lib32.txz 
    
    tar -C /mnt -xf ${DIST}/src.txz 

Finishing touches

  1. Fix zpool cachefile, to be able to boot from the new pool. Enable ZFS in the startup configuration to mount zfs filesystems on startup.
    echo 'zfs_enable="YES"' >> /mnt/etc/rc.conf
    echo 'zfs_load="YES"' >> /mnt/boot/loader.conf
    echo 'vfs.root.mountfrom="zfs:zroot"' >> /mnt/boot/loader.conf
    mkdir /mnt/etc
    cat << EOF > /mnt/etc/fstab
    # Device                Mountpoint      FStype  Options Dump    Pass#
    /dev/gpt/sys-swap0      none            swap    sw      0       0
    EOF
    
    echo -h > /mnt/boot.config
    echo 'console="comconsole"' >> /mnt/boot/loader.conf
    echo 'beastie_disable="YES"' >> /mnt/boot/loader.conf 
    sed -i "" -e '/tty[du]0/s/off/on/' -e '/tty[du]0/s/dialup/vt100/' /mnt/etc/ttys
    
    echo 'comconsole_speed="115200"' >> /mnt/boot/loader.conf
    
    zfs unmount -a
    zpool export zroot
    zpool import -o cachefile=/tmp/zpool.cache -o altroot=/mnt zroot
  2. Set mountpoints
    zfs set mountpoint=/ zroot
    cp /tmp/zpool.cache /mnt/boot/zfs/
    zfs unmount -a
    zpool set bootfs=zroot zroot
    zpool set cachefile='' zroot
    zfs set mountpoint=legacy zroot
    zfs set mountpoint=/tmp zroot/tmp
    zfs set mountpoint=/usr zroot/usr
    zfs set mountpoint=/var zroot/var
    zfs set mountpoint=/home zroot/home

UFS

gpart add -s 2G -t freebsd-ufs -l sys-root0 $DISK
gpart add -s 2G -t freebsd-ufs -l sys-root1 $DISK
gpart add -s 15G -t freebsd-ufs -l sys-var $DISK
gpart add -s 15G -t freebsd-ufs -l sys-usr $DISK
gpart add  -t freebsd-ufs -l sys-local0 $DISK
gpart bootcode -b /boot/pmbr -p /boot/gptboot -i 1 $DISK

newfs /dev/gpt/sys-root0
newfs -U /dev/gpt/sys-var
newfs -U /dev/gpt/sys-usr
newfs -U /dev/gpt/sys-local0

mount /dev/gpt/sys-root0 /mnt
mkdir /mnt/usr /mnt/var /mnt/local0
mount /dev/gpt/sys-var /mnt/var
mount /dev/gpt/sys-usr /mnt/usr
mount /dev/gpt/sys-local0 /mnt/local0/

RootOnZFS/Light (last edited 2013-03-11 14:29:39 by SimonNielsen)