#!/bin/sh

. /usr/share/debconf/confmodule

# Avoid warnings from lvm2 tools about open file descriptors
export LVM_SUPPRESS_FD_WARNINGS=1

db_register partman-lvm/confirm partman-lvm/confirm_nooverwrite

# Load modules and scan volume groups if it was not done before
if [ ! -f /var/lib/partman/lvm ] && [ "$(udpkg --print-os)" = linux ] ; then
	# load required kernel modules
	depmod -a >/dev/null 2>&1
	modprobe dm-mod >/dev/null 2>&1
	modprobe lvm-mod >/dev/null 2>&1

	# make sure that lvm is available
	if ! grep -q "[0-9] device-mapper$" /proc/misc ; then
		db_input critical partman-lvm/nolvm
		db_go
		exit 0
	fi

	# scan for logical volumes
	log-output -t partman pvscan
	log-output -t partman vgscan

	# activate volume groups
	log-output -t partman-lvm vgchange -a y

	touch /var/lib/partman/lvm
fi