#!/bin/bash

# This script removes partitions from md0, repartitions it, and re-adds
# it to md0 without a bad block list. It is assumed that each member of
# md0 is an sd device and that it's the first partition in md0.

# The context is that when installing from a kickstart file, the raid
# device created has a badblocks list by
# default. We wish to remove this list and also repartition the drive
# at the same time as we want more software control over the partitioning
# than is convenient to do from kickstart.

set -e
set -u

if (( $# < 1 )); then
   echo "First argument must be sfdisk partition definition." >&2
   exit 1
fi
SFDISK="$1"

if [[ ! -f "$SFDISK" ]]; then
  echo "$SFDISK is not valid." >&2
  exit 1
fi
for i in /dev/sd?; do
  /sbin/mdadm --fail /dev/md0 "${i}1"
  /sbin/mdadm --remove /dev/md0 "${i}1"
  sleep 5
  cat "$SFDISK" | /sbin/sfdisk --force "$i" #may want to check manually the first time
  sleep 5
  /sbin/mdadm --re-add --update=no-bbl /dev/md0 "${i}1"
  while grep -q '_' /proc/mdstat; do
    sleep 1
  done
done

#verify these are all No bad-blocks list configured on ....
for i in /dev/sd?; do
  /sbin/mdadm --examine-badblocks "${i}1"
done