cdist/cdist/conf/type/__install_reset_disk/gencode-remote

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#!/bin/sh
#
# 2012 Steven Armstrong (steven-cdist at armstrong.cc)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#
disk="/$__object_id"
disk_name="${disk##*/}"
cat << DONE
# stop lvm's if any
if find /sys/class/block/$disk_name*/holders/ -mindepth 1 | grep -q holders/dm; then
if command -v vgchange >/dev/null; then
vgchange -a n
else
echo "WARNING: vgchange command not found" >&2
fi
fi
# stop mdadm raids if any
if [ -r /proc/mdstat ]; then
md_name="\$(awk "/$disk_name/ {print \$1}" /proc/mdstat)"
if [ -n "\$md_name" ]; then
if command -v mdadm >/dev/null; then
mdadm --stop "/dev/\$md_name"
else
echo "WARNING: mdadm command not found" >&2
echo "WARNING: could not stop active mdadm raid for disk $disk" >&2
fi
fi
fi
if command -v pvremove >/dev/null; then
pvremove --force --force --yes "$disk" || true
else
echo "WARNING: pvremove command not found" >&2
fi
if command -v mdadm >/dev/null; then
mdadm --zero-superblock --force "$disk" || true
else
echo "WARNING: mdadm command not found" >&2
fi
# clean disks from any legacy signatures
if command -v wipefs >/dev/null; then
wipefs -a "$disk" || true
fi
# erase partition table
dd if=/dev/zero of=$disk bs=512 count=1
printf 'w\n' | fdisk -u -c $disk || true
DONE