#!/bin/bash

# usage: $0
# this script is idempotent

if ! test "$BASH_VERSION"; then echo "error: shell is not bash" >&2; exit 1; fi
shopt -s inherit_errexit 2>/dev/null ||: # ignore fail in bash < 4.4
set -eE -o pipefail
trap 'echo "$0:$LINENO:error: \"$BASH_COMMAND\" exit status: $?, PIPESTATUS: ${PIPESTATUS[*]}" >&2' ERR

m() { printf "%s\n" "$*";  "$@"; }


lvs --noheadings -o vg_name,lv_name | while read -r vg lv; do
  if [[ ! $vg || ! $lv ]]; then
    continue
  fi
  if ! integritysetup dump /dev/$vg/$lv &>/dev/null; then
    continue
  fi
  int_name=integrity-$vg-$lv
  if integritysetup status $int_name &>/dev/null; then
    continue
  fi
  m integritysetup open --allow-discards /dev/$vg/$lv $int_name
done

awk '$1 !~ /^ *#/ {print $1}' /etc/crypttab | while read -r c; do
  m cryptdisks_start $c
done