Update wipedisk for LVM based rootfs

Now that the root filesystem is based on an LVM logical volume, discover
the root disk by searching for the boot partition.

Changes include:
 - remove detection of rootfs_part/rootfs and adjust rootfs related
   references with boot_disk.
 - run bashate on the script and resolve indentation and syntax related
   errors. Leave long-line errors alone for improved readability.

Test Plan:
PASS - run 'wipedisk', answer prompts, and ensure all partitions are
       cleaned up except for the platform backup partition
PASS - run 'wipedisk --include-backup', answer prompts, and ensure all
       partitions are cleaned up
PASS - run 'wipedisk --include-backup --force' and ensure all partitions
       are cleaned up

Change-Id: I036ce745353b6a26bc2615ffc6e3b8955b4dd1ec
Closes-Bug: #1998204
Signed-off-by: Robert Church <robert.church@windriver.com>
This commit is contained in:
Robert Church 2022-11-29 03:31:50 -06:00
parent b0066dcd27
commit 1796ed8740
1 changed files with 42 additions and 55 deletions

View File

@ -1,6 +1,6 @@
#! /bin/bash
#!/bin/bash
#
# Copyright (c) 2013-2017 Wind River Systems, Inc.
# Copyright (c) 2013-2022 Wind River Systems, Inc.
#
# SPDX-License-Identifier: Apache-2.0
#
@ -15,7 +15,7 @@ usage ()
echo "Options:"
echo " -h display this help"
echo " --force do not ask for confirmation"
echo " --include-backup also removes data from platform backup directory"
echo " --include-backup removes data from platform backup directory"
exit 1
}
@ -42,8 +42,7 @@ unmount_fs()
}
OPTS=`getopt -o h -l force,include-backup -- "$@"`
if [ $? != 0 ]
then
if [ $? != 0 ] ; then
exit 1
fi
@ -58,61 +57,54 @@ while true ; do
esac
done
if [ $# != 0 ]
then
if [ $# != 0 ] ; then
echo "Invalid argument. Use -h for help."
exit 1
fi
declare WIPE_HDD=
# Only wipe the rootfs and boot device disks
rootfs_part=$(df --output=source / | tail -1)
rootfs=$(readlink -f $(find -L /dev/disk/by-path/ -samefile $rootfs_part | sed 's/-part[0-9]*'//))
# Only wipe the boot device disks
boot_disk_part=$(df --output=source /boot | tail -1)
boot_disk=$(readlink -f $(find -L /dev/disk/by-path/ -samefile $boot_disk_part | sed 's/-part[0-9]*'//))
WIPE_HDD=$rootfs
if [ "$rootfs" != "$boot_disk" ]
then
WIPE_HDD="$WIPE_HDD $boot_disk"
if [ -z "$boot_disk" ] ; then
echo "Boot disk not found. Failed to wipe disk."
exit 1
else
WIPE_HDD="$boot_disk"
fi
# Due to dynamic partitioning, volume groups can have PVs across multiple disks.
# When deleting the rootfs, we should also delete all PVs (across all disks) that
# are part of volume groups that are also present on the rootfs.
rootfs_vgs=$(pvdisplay -C --separator ' | ' -o pv_name,vg_name | grep $rootfs | awk '{print $3}' | sort -u)
# When deleting the boot disk volume groups, we should also delete all PVs
# (across all disks) that are part of volume groups that are also present on the
# boot disk.
boot_disk_vgs=$(pvdisplay -C --separator ' | ' -o pv_name,vg_name | grep $boot_disk | awk '{print $3}' | sort -u)
pvs_to_delete=""
for vg in $rootfs_vgs
do
for vg in $boot_disk_vgs ; do
pv=$(pvdisplay --select "vg_name=$vg" | awk '/PV Name/{print $3}')
pvs_to_delete="$pvs_to_delete $pv"
done
WIPE_HDD="$pvs_to_delete $WIPE_HDD"
if [ ! $FORCE ]
then
if [ ! $FORCE ] ; then
echo "This will result in the loss of all data on the hard drives and"
echo "will require this node to be re-installed."
echo "The following disks will be wiped:"
for dev in $WIPE_HDD
do
for dev in $WIPE_HDD ; do
echo " $dev"
done | sort
echo
read -p "Are you absolutely sure? [y/n] " -r
if [[ ! $REPLY =~ ^[Yy]$ ]]
then
if [[ ! $REPLY =~ ^[Yy]$ ]] ; then
echo "Aborted"
exit 1
fi
read -p "Type 'wipediskscompletely' to confirm: " -r
if [[ ! $REPLY = "wipediskscompletely" ]]
then
if [[ ! $REPLY = "wipediskscompletely" ]] ; then
echo "Aborted"
exit 1
fi
@ -127,14 +119,11 @@ part_type_guid_str="Partition GUID code"
# get the nodetype variable to check later if this node is a controller
. /etc/platform/platform.conf
for dev in $WIPE_HDD
do
if [[ -e $dev ]]
then
if [[ "$dev" == "$rootfs" && "${nodetype}" == "controller" ]]
then
for dev in $WIPE_HDD ; do
if [[ -e $dev ]] ; then
if [[ "$dev" == "$boot_disk" && "${nodetype}" == "controller" ]] ; then
part_numbers=( $(parted -s $dev print | awk '$1 == "Number" {i=1; next}; i {print $1}') )
for part_number in "${part_numbers[@]}"; do
for part_number in "${part_numbers[@]}" ; do
part=$dev$part_number
case $part in
*"nvme"*)
@ -143,7 +132,7 @@ do
esac
sgdisk_part_info=$(flock $dev sgdisk -i $part_number $dev)
part_type_guid=$(echo "$sgdisk_part_info" | grep "$part_type_guid_str" | awk '{print $4;}')
if [[ "$part_type_guid" == $BACKUP_PART_GUID && ! $INCLUDE_BACKUP ]]; then
if [[ "$part_type_guid" == $BACKUP_PART_GUID && ! $INCLUDE_BACKUP ]] ; then
echo "Skipping wipe backup partition $part..."
continue
fi
@ -153,8 +142,7 @@ do
# Delete the first few bytes at the start and end of the partition. This is required with
# GPT partitions, they save partition info at the start and the end of the block.
# Skip / or we will lose access to the tools on the system.
if [[ $part != $rootfs_part ]]
then
if [[ $part != $boot_disk_part ]] ; then
unmount_fs $part
dd if=/dev/zero of=$part bs=512 count=34
dd if=/dev/zero of=$part bs=512 count=34 seek=$((`blockdev --getsz $part` - 34))
@ -180,8 +168,7 @@ do
fi
done
if [[ -z $WIPE_HDD ]]
then
if [[ -z $WIPE_HDD ]] ; then
echo "No disks were detected."
else
sync