Add new vzdump hook to hardlink latest backup
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#!/bin/sh
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#
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# Purpose {{{
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# This script will hardlink latest Proxmox's backup with a explicit name.
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#
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# This script is intended to be used as a hook script for the Proxmox
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# VZDump utility.
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#
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# In order to use it, use the configuration directive "script" of the
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# vzdump utility. This can be done for scheduled backups by putting
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# "script: /path/to/this/script" in /etc/vzdump.conf. Don't forget to
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# set executable permission for the script file.
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#
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# Based on RobHost's vzdump_hook script :
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# https://github.com/robhost/proxmox-scripts/blob/master/vzdump_hook.sh
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# }}}
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# Vars {{{
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readonly PROGNAME=$(basename "${0}")
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readonly ARGS="${*}"
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[ -z "${DEBUG}" ] && DEBUG=0
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## Export DEBUG for sub-script
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export DEBUG
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## Colors
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readonly PURPLE='\033[1;35m'
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readonly RED='\033[0;31m'
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readonly RESET='\033[0m'
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readonly COLOR_DEBUG="${PURPLE}"
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# }}}
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usage() { # {{{
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cat <<- HELP
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usage: ${PROGNAME} [-h]
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Hardlink latest Proxmox's backup with a explicit name.
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OPTIONS :
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-h,--help
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Print this help message.
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HELP
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}
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# }}}
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debug_message() { # {{{
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local_debug_message="${1}"
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## Print message if DEBUG is enable (=0)
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[ "${DEBUG}" -eq "0" ] && printf '\e[1;35m%-6b\e[m\n' "DEBUG − ${PROGNAME} : ${local_debug_message}"
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unset local_debug_message
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return 0
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}
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# }}}
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error_message() { # {{{
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local_error_message="${1}"
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local_error_code="${2}"
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## Print message
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printf '%b\n' "ERROR − ${PROGNAME} : ${RED}${local_error_message}${RESET}"
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exit "${local_error_code:=66}"
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}
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# }}}
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main() { # {{{
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# If backup is complete {{{
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if [ "${phase}" = "backup-end" ]; then
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## Get TARGET's file extension
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target_archive_extension="$(printf '%s' "${TARGET}" | cut --delimiter="." --fields=1 --complement)"
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## Set path for LATEST archive file
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latest_archive="${dumpdir}/vzdump-${vmtype}-${vmid}-latest.${target_archive_extension}"
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## hardlink TARGET archive to LATEST
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debug_message "hardlink TARGET archive (${target_archive}) to \
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LATEST (${latest_archive})." >> "${temp_log_file}"
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ln --force "${target_archive}" "${latest_archive}"
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fi
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# }}}
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# If log is complete {{{
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if [ "${phase}" = "log-end" ]; then
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## Set path for LATEST log file
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latest_log="${dumpdir}/vzdump-${vmtype}-${vmid}-latest.log"
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## hardlink TARGET log to LATEST
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debug_message "hardlink TARGET logs (${logfile}) to \
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LATEST (${latest_log})." >> "${temp_log_file}"
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ln --force "${logfile}" "${latest_log}"
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fi
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# }}}
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debug_message "main − \
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ARGS=${ARGS}
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env=$(env)
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---"
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}
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# }}}
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# Manage arguments # {{{
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# This code can't be in a function due to argument management
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phase="${1}" # (job|backup)-(start|end|abort)|log-end|pre-(stop|restart)|post-restart
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case "${phase}" in
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# set variables for the phases
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#backup-start|backup-end|backup-abort|log-end|pre-stop|pre-restart|post-restart)
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#;;
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# do work
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job-start|job-end|job-abort)
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# Available vars {{{
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# Arguments : job-start
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#LVM_SUPPRESS_FD_WARNINGS=1
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#DUMPDIR=/path/to/backup/dump
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#STOREID=backup.id.from.storage.cfg
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# }}}
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;;
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backup-start|backup-end|backup-abort)
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# Available vars {{{
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#ARGS=backup-start stop vm.id
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#HOSTNAME=hostname.domain.tld
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#TARGET=/path/to/backup/dump/vzdump-$VMTYPE_VALUE-$2_VALUE-YYYY_MM_DD-hh-mm-ss.tar.zst
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#LOGFILE=/path/to/backup/dump/vzdump-$VMTYPE_VALUE-$2_VALUE-YYYY_MM_DD-hh-mm-ss.log
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#LVM_SUPPRESS_FD_WARNINGS=1
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#DUMPDIR=/path/to/backup/dump
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#VMTYPE=lxc|qemu
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#STOREID=backup.id.from.storage.cfg
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# }}}
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vmid="${3}"
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target_archive="${TARGET}"
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dumpdir="${DUMPDIR}"
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vmtype="${VMTYPE}"
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;;
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log-end)
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# Available vars {{{
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#ARGS=log-end stop vm.id
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#HOSTNAME=hostname.domain.tld
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#TARGET=/path/to/backup/dump/vzdump-$VMTYPE_VALUE-$2_VALUE-YYYY_MM_DD-hh-mm-ss.tar.zst
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#LOGFILE=/path/to/backup/dump/vzdump-$VMTYPE_VALUE-$2_VALUE-YYYY_MM_DD-hh-mm-ss.log
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#LVM_SUPPRESS_FD_WARNINGS=1
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#DUMPDIR=/path/to/backup/dump
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#VMTYPE=lxc|qemu
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#STOREID=backup.id.from.storage.cfg
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# }}}
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vmid="${3}"
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logfile="${LOGFILE}"
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dumpdir="${DUMPDIR}"
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vmtype="${VMTYPE}"
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;;
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pre-stop)
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;;
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pre-restart)
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;;
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post-restart)
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;;
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*)
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error_message "Unknown phase ${phase}." 1
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;;
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esac
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# }}}
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main
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exit 0
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