#! /bin/sh

. ./settings00.sh

apt-get update

#sed -i "s/PasswordAuthentication no/PasswordAuthentication yes/g" /etc/ssh/sshd_config
#service ssh restart

modprobe zfs

# If you are re-using a MDADM disk, clear it as necessary:
# 
# If the disk was previously used in an MD array, zero the superblock:
#apt install --yes mdadm
#mdadm --zero-superblock --force /dev/disk/by-id/$DISK1
#mdadm --zero-superblock --force /dev/disk/by-id/$DISK2
#mdadm --zero-superblock --force /dev/disk/by-id/$DISK3
 
# Clear the partition table:
sgdisk --zap-all /dev/disk/by-id/$DISK1
sgdisk --zap-all /dev/disk/by-id/$DISK2
sgdisk --zap-all /dev/disk/by-id/$DISK3

# 2.2 Partition your disk:
#
# We assume advanced format: 4096 bytes per sector, 8 multiple
#
# Legacy (BIOS) booting (part-1):
sgdisk -a1 -n1:40:2047  -t1:EF02 /dev/disk/by-id/$DISK1
sgdisk -a1 -n1:40:2047  -t1:EF02 /dev/disk/by-id/$DISK2
sgdisk -a1 -n1:40:2047  -t1:EF02 /dev/disk/by-id/$DISK3

# ZFS partition:
sgdisk     -n2:0:0      -t2:BF01 /dev/disk/by-id/$DISK1
sgdisk     -n2:0:0      -t2:BF01 /dev/disk/by-id/$DISK2
sgdisk     -n2:0:0      -t2:BF01 /dev/disk/by-id/$DISK3


##
## Create POOL
##

zpool create -f -o ashift=12 -o autoexpand=on \
      -O atime=off -O compression=off \
      -O mountpoint=/ -R /mnt \
      $POOL raidz2 \
      /dev/disk/by-id/$DISK1-part2 \
      /dev/disk/by-id/$DISK2-part2 \
      /dev/disk/by-id/$DISK3-part2

zpool autoexpand=on $POOL
zpool autoreplace=off $POOL
zpool listsnapshots=off $POOL

zfs set dedup=off $POOL
zfs set compression=off $POOL
zfs set atime=off $POOL
zfs set mountpoint=none $POOL
zfs set aclinherit=passthrough $POOL
zfs set acltype=posixacl $POOL
zfs set xattr=sa $POOL

# Create Dataset System Root 
zfs create -o mountpoint=none $POOL/system
zfs create -o mountpoint=/ $POOL/system/debian
#zfs mount $POOL/system/debian
zpool set bootfs=$POOL/system/debian $POOL

zfs create -o compression=lz4 $POOL/system/debian/var

# Create Datasets ..
zfs create -o mountpoint=/home $POOL/users
zfs create -o mountpoint=/root $POOL/users/root

zfs create -o mountpoint=/backup -o compression=lz4 $POOL/backup
zfs create -o mountpoint=/data $POOL/data
zfs create -o mountpoint=/srv $POOL/services
zfs create -o mountpoint=/usr/local/projects -o compression=lz4 $POOL/projects

## Export / Import ( '-d ..' also changes the dev names )
##zpool export $POOL
##zpool import -d /dev/disk/by-id -R /mnt $POOL

##
## Prepare ROOT
##

## /mnt already must exist as the just created zfs fs
##mkdir -p /mnt

(cd /mnt && \
 tar --xattrs -xapf $STRAPBALL
)

zfs set devices=off $POOL

echo $MYHOSTNAME > /mnt/etc/hostname

echo "127.0.1.1       $MYHOSTNAME" >> /mnt/etc/hosts
#or if the system has a real name in DNS:
#echo "127.0.1.1       $MYFQDN $MYHOSTNAME" >> /mnt/etc/hosts

# Using NetworkManager should not require this
#mv /mnt/etc/resolv.conf /mnt/etc/resolv.conf-orig
#cat /etc/resolv.conf > /mnt/etc/resolv.conf
echo You may want to adjust /mnt/etc/network/interfaces 

mkdir -p /mnt/root/debian-zfs-live
cp -a ../* /mnt/root/debian-zfs-live

mount --rbind /dev  /mnt/dev
mount --rbind /proc /mnt/proc
mount --rbind /sys  /mnt/sys
mount --make-rslave /mnt/dev
mount --make-rslave /mnt/proc
mount --make-rslave /mnt/sys
echo umount -R /mnt/dev
echo umount -R /mnt/proc
echo umount -R /mnt/sys
echo "cat /proc/mounts | awk '{print $2}' | grep "/mnt" | sort -r | xargs umount"

echo RUN chroot /mnt /bin/bash --login