scripts/debian/clean.hdd.sh

322 lines
7.6 KiB
Bash
Executable File
Raw Permalink Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

This file contains Unicode characters that might be confused with other characters. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

#!/bin/sh
#
# Purpose {{{
# This script will try to clean the content of the two firsts hdd
# 1. Remove everything related to LVM
# 2. Remove partitions
#
# 2021-12-08
# }}}
# Vars {{{
readonly PROGNAME=$(basename "${0}")
readonly PROGDIR=$(readlink -m $(dirname "${0}"))
readonly ARGS="${*}"
readonly NBARGS="${#}"
[ -z "${DEBUG}" ] && DEBUG=1
## Export DEBUG for sub-script
export DEBUG
# Default values for some vars
#readonly MY_VAR_XY_DEFAULT="666"
## Colors
readonly PURPLE='\033[1;35m'
readonly RED='\033[0;31m'
readonly RESET='\033[0m'
readonly COLOR_DEBUG="${PURPLE}"
# }}}
usage() { # {{{
cat <<- EOF
usage: $PROGNAME [-d|-h]
Remove everything related to /dev/sda and /dev/sdb
EXAMPLES:
- Remove sda and sdb partitions
${PROGNAME}
OPTIONS:
-d,--debug
Enable debug messages.
-h,--help
Print this help message.
EOF
}
# }}}
debug_message() { # {{{
local_message="${1}"
## Print message if DEBUG is enable (=0)
[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG ${PROGNAME}: ${local_message}"
return 0
}
# }}}
error_message() { # {{{
local_error_message="${1}"
local_error_code="${2}"
## Print message if DEBUG is enable (=0)
[ "${DEBUG}" -eq "0" ] && printf '%b\n' "ERROR ${PROGNAME}: ${RED}${local_error_message}${RESET}"
exit "${local_error_code:=66}"
}
# }}}
install_dependencies() { # {{{
## Update APT repositories {{{
## OR exit
debug_message "install_dependencies \
Update repositories…"
apt update > /dev/null \
|| exit 1
## }}}
## Install dependencies {{{
## OR exit
debug_message "install_dependencies \
Install some packages…"
apt install -y coreutils e2fsprogs gawk lvm2 thin-provisioning-tools parted util-linux > /dev/null \
|| exit 2
## }}}
}
# }}}
is_vg_available() { # {{{
## Return False by default
return_is_vg_available="1"
## If at least 1 VG is available
if [ `vgs --noheadings | wc --line` -gt 0 ]; then
debug_message "is_vg_available \
At least one Volume Group is ${RED}available${COLOR_DEBUG}."
return_is_vg_available="0"
else
debug_message "is_vg_available \
${RED}No${COLOR_DEBUG} Volume Group available on this host."
return_is_vg_available="1"
fi
return "${return_is_vg_available}"
}
# }}}
remove_vg() { # {{{
local_vg_name="${1}"
## Return False by default
return_remove_vg="1"
## If the Volume Group is successfully removed
if vgremove "${local_vg_name}" ; then
debug_message "remove_vg \
${local_vg_name} Volume Group was successfully ${RED}removed${COLOR_DEBUG}."
return_remove_vg="0"
else
debug_message "remove_vg \
Error with ${RED}vgremove${COLOR_DEBUG} command."
return_remove_vg="1"
fi
return "${return_remove_vg}"
}
# }}}
is_pv_available() { # {{{
## Return False by default
return_is_pv_available="1"
## If at least 1 PV is available
if [ `pvs --noheadings | wc --line` -gt 0 ]; then
debug_message "is_pv_available \
At least one Physical Volume is ${RED}available${COLOR_DEBUG}."
return_is_pv_available="0"
else
debug_message "is_pv_available \
${RED}No${COLOR_DEBUG} Physical Volume available on this host."
return_is_pv_available="1"
fi
return "${return_is_pv_available}"
}
# }}}
remove_pv() { # {{{
local_pv_path="${1}"
## Return False by default
return_remove_pv="1"
## If the Physical Volume is successfully removed
if pvremove "${local_pv_path}" ; then
debug_message "remove_pv \
${local_pv_path} was successfully ${RED}removed${COLOR_DEBUG}."
return_remove_pv="0"
else
debug_message "remove_pv \
Error with ${RED}pvremove${COLOR_DEBUG} command."
return_remove_pv="1"
fi
return "${return_remove_pv}"
}
# }}}
main() { # {{{
## Install dependencies
install_dependencies
## If a Volume Group is available {{{
## AND Disable all Volume Group (and related Logical Volumes)
while is_vg_available; do
### Get first Volume Group name
vg_name=$(vgs --noheadings | awk '{ print $1; exit }')
### Ensure to disable all Volume Group
debug_message "main \
Disable all Volume Group and related Logical Volumes."
vgchange --quiet --activate n
### Try to remove the Volume Group
### OR exit
remove_vg "${vg_name}" \
|| error_message "Error while trying to remove ${vg_name} Volume Group. Use --debug option for more informations." 3
done
## }}}
## If a Physical Volume is available {{{
while is_pv_available; do
### Get first Physical Volume path
pv_path=$(pvs --noheadings | awk '{ print $1; exit }')
debug_message "main \
Try to manage ${RED}${pv_path}${COLOR_DEBUG} Physical Volume."
### Try to remove the Physical Volume
### OR exit
remove_pv "${pv_path}" \
|| error_message "Error while trying to remove ${pv_path} Physical Volume. Use --debug option for more informations." 4
done
## }}}
## If a Physical Volume is available {{{
while is_pv_available; do
### Get first Physical Volume path
pv_path=$(pvs --noheadings | awk '{ print $1; exit }')
debug_message "main \
Try to manage ${RED}${pv_path}${COLOR_DEBUG} Physical Volume."
### Try to remove the Physical Volume
### OR exit
remove_pv "${pv_path}" \
|| error_message "Error while trying to remove ${pv_path} Physical Volume. Use --debug option for more informations." 4
done
## }}}
# Remove all old partitions for sda and sdb {{{
for hdd in /dev/sda /dev/sdb; do
## Start partition number to 32
part_number="32"
while [ "${part_number}" -gt 0 ]
do
### If partition exists {{{
if [ -b "${hdd}${part_number}" ]; then
debug_message "main \
Try to remove ${hdd}${part_number} partition."
parted "${hdd}" rm "${part_number}" \
|| error_message "Can't remove ${hdd}${part_number} partition." 5
fi
### }}}
### Decrease partition number
part_number=$(($part_number-1))
done
done
## }}}
printf '%b\n' "All disks were successfully cleaned. \
You can reboot the system to update mtab."
}
# }}}
# Manage arguments # {{{
# This code can't be in a function due to argument management
if [ ! "${NBARGS}" -eq "0" ]; then
manage_arg="0"
## If the first argument is not an option
if ! printf -- '%s' "${1}" | grep -q -E -- "^-+";
then
## Print help message and exit
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
fi
# Parse all options (start with a "-") one by one
while printf -- '%s' "${1}" | grep -q -E -- "^-+"; do
case "${1}" in
-d|--debug ) ## debug
DEBUG=0
;;
-h|--help ) ## help
usage
## Exit after help informations
exit 0
;;
#-v|--var ) ## Define var with given arg
### Move to the next argument
#shift
### Define var
#readonly my_var_xy="${1}"
#;;
* ) ## unknow option
printf '%b\n' "${RED}Invalid option: ${1}${RESET}"
printf '%b\n' "---"
usage
exit 1
;;
esac
debug_message "Arguments management \
${RED}${1}${COLOR_DEBUG} option managed."
## Move to the next argument
shift
manage_arg=$((manage_arg+1))
done
debug_message "Arguments management \
${RED}${manage_arg}${COLOR_DEBUG} argument(s) successfully managed."
else
debug_message "Arguments management \
No arguments/options to manage."
fi
# }}}
main
exit 0