| 1 | #!/bin/bash
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| 2 | # $Id: testbox-maintenance.sh 64580 2016-11-04 15:46:01Z vboxsync $
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| 3 | ## @file
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| 4 | # VirtualBox Validation Kit - testbox mainenance service
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| 5 | #
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| 6 |
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| 7 | #
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| 8 | # Copyright (C) 2006-2016 Oracle Corporation
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| 9 | #
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| 10 | # This file is part of VirtualBox Open Source Edition (OSE), as
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| 11 | # available from http://www.virtualbox.org. This file is free software;
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| 12 | # you can redistribute it and/or modify it under the terms of the GNU
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| 13 | # General Public License (GPL) as published by the Free Software
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| 14 | # Foundation, in version 2 as it comes in the "COPYING" file of the
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| 15 | # VirtualBox OSE distribution. VirtualBox OSE is distributed in the
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| 16 | # hope that it will be useful, but WITHOUT ANY WARRANTY of any kind.
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| 17 | #
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| 18 | # The contents of this file may alternatively be used under the terms
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| 19 | # of the Common Development and Distribution License Version 1.0
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| 20 | # (CDDL) only, as it comes in the "COPYING.CDDL" file of the
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| 21 | # VirtualBox OSE distribution, in which case the provisions of the
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| 22 | # CDDL are applicable instead of those of the GPL.
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| 23 | #
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| 24 | # You may elect to license modified versions of this file under the
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| 25 | # terms and conditions of either the GPL or the CDDL or both.
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| 26 | #
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| 27 |
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| 28 |
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| 29 | #
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| 30 | # Global Variables (config first).
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| 31 | #
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| 32 | MY_REBOOT_WHEN_DONE="yes"
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| 33 | #MY_REBOOT_WHEN_DONE="" # enable this for debugging the script
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| 34 |
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| 35 | MY_TFTP_ROOT="/mnt/testbox-tftp"
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| 36 | MY_BACKUP_ROOT="/mnt/testbox-backup"
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| 37 | MY_BACKUP_MNT_TEST_FILE="/mnt/testbox-backup/testbox-backup"
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| 38 | MY_GLOBAL_LOG_FILE="${MY_BACKUP_ROOT}/maintenance.log"
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| 39 |
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| 40 | MY_IP=""
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| 41 | MY_BACKUP_DIR=""
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| 42 | MY_LOG_FILE=""
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| 43 | MY_PXELINUX_CFG_FILE=""
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| 44 |
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| 45 |
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| 46 | ##
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| 47 | # Info message.
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| 48 | #
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| 49 | InfoMsg()
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| 50 | {
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| 51 | echo $*;
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| 52 | if test -n "${MY_LOG_FILE}"; then
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| 53 | echo "`date -uIsec`: ${MY_IP}: info:" $* >> ${MY_LOG_FILE};
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| 54 | fi
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| 55 | }
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| 56 |
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| 57 |
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| 58 | ##
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| 59 | # Error message and reboot+exit. First argument is exit code.
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| 60 | #
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| 61 | ErrorMsgExit()
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| 62 | {
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| 63 | MY_RET=$1
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| 64 | shift
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| 65 | echo "testbox-maintenance.sh: error:" $* >&2;
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| 66 | # Append to the testbox log.
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| 67 | if test -n "${MY_LOG_FILE}"; then
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| 68 | echo "`date -uIsec`: ${MY_IP}: error:" $* >> "${MY_LOG_FILE}";
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| 69 | fi
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| 70 | # Append to the global log.
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| 71 | if test -f "${MY_BACKUP_MNT_TEST_FILE}"; then
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| 72 | echo "`date -uIsec`: ${MY_IP}: error:" $* >> "${MY_GLOBAL_LOG_FILE}";
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| 73 | fi
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| 74 |
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| 75 | #
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| 76 | # On error we normally wait 5min before rebooting to avoid repeating the
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| 77 | # same error too many time before the admin finds out. We choose NOT to
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| 78 | # remove the PXE config file here because (a) the admin might otherwise
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| 79 | # not notice something went wrong, (b) the system could easily be in a
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| 80 | # weird unbootable state, (c) the problem might be temporary.
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| 81 | #
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| 82 | # While debugging, we just exit here.
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| 83 | #
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| 84 | if test -n "${MY_REBOOT_WHEN_DONE}"; then
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| 85 | sleep 5m
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| 86 | echo "testbox-maintenance.sh: rebooting (after error)" >&2;
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| 87 | reboot
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| 88 | fi
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| 89 | exit ${MY_RET}
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| 90 | }
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| 91 |
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| 92 | #
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| 93 | # Try figure out the IP address of the box and the hostname from it again.
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| 94 | #
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| 95 | MY_IP=` hostname -I | cut -f1 -d' ' | head -1 `
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| 96 | if test -z "${MY_IP}" -o `echo "${MY_IP}" | wc -w` -ne "1" -o "${MY_IP}" = "127.0.0.1"; then
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| 97 | ErrorMsgExit 10 "Failed to get a good IP! (MY_IP=${MY_IP})"
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| 98 | fi
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| 99 | MY_HOSTNAME=`getent hosts "${MY_IP}" | sed -s 's/[[:space:]][[:space:]]*/ /g' | cut -d' ' -f2 `
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| 100 | if test -z "${MY_HOSTNAME}"; then
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| 101 | MY_HOSTNAME="unknown";
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| 102 | fi
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| 103 |
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| 104 | # Derive the backup dir and log file name from it.
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| 105 | if test ! -f "${MY_BACKUP_MNT_TEST_FILE}"; then
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| 106 | ErrorMsgExit 11 "Backup directory is not mounted."
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| 107 | fi
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| 108 | MY_BACKUP_DIR="${MY_BACKUP_ROOT}/${MY_IP}"
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| 109 | MY_LOG_FILE="${MY_BACKUP_DIR}/maintenance.log"
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| 110 | mkdir -p "${MY_BACKUP_DIR}"
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| 111 | echo "================ `date -uIsec`: ${MY_IP}: ${MY_HOSTNAME} starts a new session ================" >> "${MY_LOG_FILE}"
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| 112 | echo "`date -uIsec`: ${MY_IP}: ${MY_HOSTNAME} says hi." >> "${MY_GLOBAL_LOG_FILE}"
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| 113 | InfoMsg "MY_IP=${MY_IP}<eol>"
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| 114 |
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| 115 | #
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| 116 | # Redirect stderr+stdout thru tee and to a log file on the server.
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| 117 | #
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| 118 | MY_OUTPUT_LOG_FILE="${MY_BACKUP_DIR}/maintenance-output.log"
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| 119 | echo "" >> "${MY_OUTPUT_LOG_FILE}"
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| 120 | echo "================ `date -uIsec`: ${MY_IP}: ${MY_HOSTNAME} starts a new session ================" >> "${MY_OUTPUT_LOG_FILE}"
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| 121 | exec &> >(tee -a "${MY_OUTPUT_LOG_FILE}")
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| 122 |
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| 123 | #
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| 124 | # Convert the IP address to PXELINUX hex format, then check that we've got
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| 125 | # a config file on the TFTP share that we later can remove. We consider it a
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| 126 | # fatal failure if we don't because we've probably got the wrong IP and we'll
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| 127 | # be stuck doing the same stuff over and over again.
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| 128 | #
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| 129 | MY_TMP=`echo "${MY_IP}" | sed -e 's/\./ /g' `
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| 130 | MY_IP_HEX=`printf "%02X%02X%02X%02X" ${MY_TMP}`
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| 131 | InfoMsg "MY_IP_HEX=${MY_IP_HEX}<eol>"
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| 132 |
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| 133 | if test ! -f "${MY_TFTP_ROOT}/pxelinux.0"; then
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| 134 | ErrorMsgExit 12 "TFTP share mounted or mixxing pxelinux.0 in the root."
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| 135 | fi
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| 136 |
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| 137 | MY_PXELINUX_CFG_FILE="${MY_TFTP_ROOT}/pxelinux.cfg/${MY_IP_HEX}"
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| 138 | if test ! -f "${MY_PXELINUX_CFG_FILE}"; then
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| 139 | ErrorMsgExit 13 "No pxelinux.cfg file found (${MY_PXELINUX_CFG_FILE}) - wrong IP?"
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| 140 | fi
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| 141 |
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| 142 | #
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| 143 | # Dig the action out of from the kernel command line.
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| 144 | #
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| 145 | if test -n "${MY_REBOOT_WHEN_DONE}"; then
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| 146 | InfoMsg "/proc/cmdline: `cat /proc/cmdline`"
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| 147 | set `cat /proc/cmdline`
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| 148 | else
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| 149 | InfoMsg "Using script command line: $*"
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| 150 | fi
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| 151 | MY_ACTION=not-found
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| 152 | while test $# -ge 1; do
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| 153 | case "$1" in
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| 154 | testbox-action-*)
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| 155 | MY_ACTION="$1"
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| 156 | ;;
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| 157 | esac
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| 158 | shift
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| 159 | done
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| 160 | if test "${MY_ACTION}" = "not-found"; then
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| 161 | ErrorMsgExit 14 "No action given. Expected testbox-action-backup, testbox-action-backup-again, testbox-action-restore," \
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| 162 | "testbox-action-refresh-info, or testbox-action-rescue on the kernel command line.";
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| 163 | fi
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| 164 |
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| 165 | # Validate and shorten the action.
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| 166 | case "${MY_ACTION}" in
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| 167 | testbox-action-backup)
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| 168 | MY_ACTION="backup";
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| 169 | ;;
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| 170 | testbox-action-backup-again)
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| 171 | MY_ACTION="backup-again";
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| 172 | ;;
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| 173 | testbox-action-restore)
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| 174 | MY_ACTION="restore";
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| 175 | ;;
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| 176 | testbox-action-refresh-info)
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| 177 | MY_ACTION="refresh-info";
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| 178 | ;;
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| 179 | testbox-action-rescue)
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| 180 | MY_ACTION="rescue";
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| 181 | ;;
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| 182 | *) ErrorMsgExit 15 "Invalid action '${MY_ACTION}'";
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| 183 | ;;
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| 184 | esac
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| 185 |
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| 186 | # Log the action in both logs.
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| 187 | echo "`date -uIsec`: ${MY_IP}: info: Executing '${MY_ACTION}'." >> "${MY_GLOBAL_LOG_FILE}";
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| 188 |
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| 189 | #
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| 190 | # Generate missing info for this testbox if backing up.
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| 191 | #
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| 192 | MY_INFO_FILE="${MY_BACKUP_DIR}/testbox-info.txt"
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| 193 | if test '!' -f "${MY_INFO_FILE}" \
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| 194 | -o "${MY_ACTION}" = "backup" \
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| 195 | -o "${MY_ACTION}" = "backup-again" \
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| 196 | -o "${MY_ACTION}" = "refresh-info" ;
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| 197 | then
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| 198 | echo "IP: ${MY_IP}" > ${MY_INFO_FILE};
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| 199 | echo "HEX-IP: ${MY_IP_HEX}" >> ${MY_INFO_FILE};
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| 200 | echo "Hostname: ${MY_HOSTNAME}" >> ${MY_INFO_FILE};
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| 201 | echo "" >> ${MY_INFO_FILE};
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| 202 | echo "**** cat /proc/cpuinfo ****" >> ${MY_INFO_FILE};
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| 203 | echo "**** cat /proc/cpuinfo ****" >> ${MY_INFO_FILE};
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| 204 | echo "**** cat /proc/cpuinfo ****" >> ${MY_INFO_FILE};
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| 205 | cat /proc/cpuinfo >> ${MY_INFO_FILE};
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| 206 | echo "" >> ${MY_INFO_FILE};
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| 207 | echo "**** lspci -vvv ****" >> ${MY_INFO_FILE};
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| 208 | echo "**** lspci -vvv ****" >> ${MY_INFO_FILE};
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| 209 | echo "**** lspci -vvv ****" >> ${MY_INFO_FILE};
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| 210 | lspci -vvv >> ${MY_INFO_FILE} 2>&1;
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| 211 | echo "" >> ${MY_INFO_FILE};
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| 212 | echo "**** biosdecode ****" >> ${MY_INFO_FILE};
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| 213 | echo "**** biosdecode ****" >> ${MY_INFO_FILE};
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| 214 | echo "**** biosdecode ****" >> ${MY_INFO_FILE};
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| 215 | biosdecode >> ${MY_INFO_FILE} 2>&1;
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| 216 | echo "" >> ${MY_INFO_FILE};
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| 217 | echo "**** dmidecode ****" >> ${MY_INFO_FILE};
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| 218 | echo "**** dmidecode ****" >> ${MY_INFO_FILE};
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| 219 | echo "**** dmidecode ****" >> ${MY_INFO_FILE};
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| 220 | dmidecode >> ${MY_INFO_FILE} 2>&1;
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| 221 | echo "" >> ${MY_INFO_FILE};
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| 222 | echo "**** fdisk -l ****" >> ${MY_INFO_FILE};
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| 223 | echo "**** fdisk -l ****" >> ${MY_INFO_FILE};
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| 224 | echo "**** fdisk -l ****" >> ${MY_INFO_FILE};
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| 225 | fdisk -l >> ${MY_INFO_FILE} 2>&1;
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| 226 | echo "" >> ${MY_INFO_FILE};
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| 227 | echo "**** dmesg ****" >> ${MY_INFO_FILE};
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| 228 | echo "**** dmesg ****" >> ${MY_INFO_FILE};
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| 229 | echo "**** dmesg ****" >> ${MY_INFO_FILE};
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| 230 | dmesg >> ${MY_INFO_FILE} 2>&1;
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| 231 |
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| 232 | #
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| 233 | # Get the raw ACPI tables and whatnot since we can. Use zip as tar will
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| 234 | # zero pad virtual files due to wrong misleading size returned by stat (4K).
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| 235 | #
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| 236 | # Note! /sys/firmware/dmi/entries/15-0/system_event_log/raw_event_log has been
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| 237 | # see causing fatal I/O errors, so skip all raw_event_log files.
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| 238 | #
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| 239 | zip -qr9 "${MY_BACKUP_DIR}/testbox-info.zip" \
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| 240 | /proc/cpuinfo \
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| 241 | /sys/firmware/ \
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| 242 | -x "*/raw_event_log"
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| 243 | fi
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| 244 |
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| 245 | if test '!' -f "${MY_BACKUP_DIR}/${MY_HOSTNAME}" -a "${MY_HOSTNAME}" != "unknown"; then
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| 246 | echo "${MY_HOSTNAME}" > "${MY_BACKUP_DIR}/${MY_HOSTNAME}"
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| 247 | fi
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| 248 |
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| 249 | if test '!' -f "${MY_BACKUP_DIR}/${MY_IP_HEX}"; then
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| 250 | echo "${MY_IP}" > "${MY_BACKUP_DIR}/${MY_IP_HEX}"
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| 251 | fi
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| 252 |
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| 253 | #
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| 254 | # Assemble a list of block devices using /sys/block/* and some filtering.
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| 255 | #
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| 256 | if test -f "${MY_BACKUP_DIR}/disk-devices.lst"; then
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| 257 | MY_BLOCK_DEVS=`cat ${MY_BACKUP_DIR}/disk-devices.lst \
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| 258 | | sed -e 's/[[:space:]][::space::]]*/ /g' -e 's/^[[:space:]]*//' -e 's/[[:space:]]*$//' `;
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| 259 | if test -z "${MY_BLOCK_DEVS}"; then
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| 260 | ErrorMsgExit 17 "No block devices found via sys/block."
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| 261 | fi
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| 262 | InfoMsg "disk-device.lst: MY_BLOCK_DEVS=${MY_BLOCK_DEVS}";
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| 263 | else
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| 264 | MY_BLOCK_DEVS="";
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| 265 | for MY_DEV in `ls /sys/block`; do
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| 266 | case "${MY_DEV}" in
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| 267 | [sh]d*)
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| 268 | MY_BLOCK_DEVS="${MY_BLOCK_DEVS} ${MY_DEV}"
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| 269 | ;;
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| 270 | *) InfoMsg "Ignoring /sys/block/${MY_DEV}";
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| 271 | ;;
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| 272 | esac
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| 273 | done
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| 274 | if test -z "${MY_BLOCK_DEVS}"; then
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| 275 | ErrorMsgExit 17 "No block devices found via /sys/block."
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| 276 | fi
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| 277 | InfoMsg "/sys/block: MY_BLOCK_DEVS=${MY_BLOCK_DEVS}";
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| 278 | fi
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| 279 |
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| 280 | #
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| 281 | # Take action
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| 282 | #
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| 283 | case "${MY_ACTION}" in
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| 284 | #
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| 285 | # Create a backup. The 'backup' action refuses to overwrite an
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| 286 | # existing backup, but is otherwise identical to 'backup-again'.
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| 287 | #
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| 288 | backup|backup-again)
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| 289 | for MY_DEV in ${MY_BLOCK_DEVS}; do
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| 290 | MY_DST="${MY_BACKUP_DIR}/${MY_DEV}.gz"
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| 291 | if test -f "${MY_DST}"; then
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| 292 | if test "${MY_ACTION}" != 'backup-again'; then
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| 293 | ErrorMsgExit 18 "${MY_DST} already exists"
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| 294 | fi
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| 295 | InfoMsg "${MY_DST} already exists"
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| 296 | fi
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| 297 | done
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| 298 |
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| 299 | # Do the backing up.
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| 300 | for MY_DEV in ${MY_BLOCK_DEVS}; do
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| 301 | MY_SRC="/dev/${MY_DEV}"
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| 302 | MY_DST="${MY_BACKUP_DIR}/${MY_DEV}.gz"
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| 303 | if test -f "${MY_DST}"; then
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| 304 | mv -f "${MY_DST}" "${MY_DST}.old";
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| 305 | fi
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| 306 | if test -b "${MY_SRC}"; then
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| 307 | InfoMsg "Backing up ${MY_SRC} to ${MY_DST}...";
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| 308 | dd if="${MY_SRC}" bs=2M | gzip -c > "${MY_DST}";
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| 309 | MY_RCS=("${PIPESTATUS[@]}");
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| 310 | if test "${MY_RCS[0]}" -eq 0 -a "${MY_RCS[1]}" -eq 0; then
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| 311 | InfoMsg "Successfully backed up ${MY_SRC} to ${MY_DST}";
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| 312 | else
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| 313 | rm -f "${MY_DST}";
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| 314 | ErrorMsgExit 19 "There was a problem backing up ${MY_SRC} to ${MY_DST}: dd => ${MY_RCS[0]}; gzip => ${MY_RCS[1]}";
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| 315 | fi
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| 316 | else
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| 317 | InfoMsg "Skipping ${MY_SRC} as it either doesn't exist or isn't a block device";
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| 318 | fi
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| 319 | done
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| 320 | ;;
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| 321 |
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| 322 | #
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| 323 | # Restore existing.
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| 324 | #
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| 325 | restore)
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| 326 | for MY_DEV in ${MY_BLOCK_DEVS}; do
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| 327 | MY_SRC="${MY_BACKUP_DIR}/${MY_DEV}.gz"
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| 328 | MY_DST="/dev/${MY_DEV}"
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| 329 | if test -b "${MY_DST}"; then
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| 330 | if test -f "${MY_SRC}"; then
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| 331 | InfoMsg "Restoring ${MY_SRC} onto ${MY_DST}...";
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| 332 | gunzip -c "${MY_SRC}" | dd of="${MY_DST}" bs=64K;
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| 333 | MY_RCS=("${PIPESTATUS[@]}");
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| 334 | if test ${MY_RCS[0]} -eq 0 -a ${MY_RCS[1]} -eq 0; then
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| 335 | InfoMsg "Successfully restored ${MY_SRC} onto ${MY_DST}";
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| 336 | else
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| 337 | ErrorMsgExit 20 "There was a problem restoring ${MY_SRC} onto ${MY_DST}: dd => ${MY_RCS[1]}; gunzip => ${MY_RCS[0]}";
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| 338 | fi
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| 339 | else
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| 340 | InfoMsg "Skipping ${MY_DST} because ${MY_SRC} does not exist.";
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| 341 | fi
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| 342 | else
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| 343 | InfoMsg "Skipping ${MY_DST} as it either doesn't exist or isn't a block device.";
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| 344 | fi
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| 345 | done
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| 346 | ;;
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| 347 |
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| 348 | #
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| 349 | # Nothing else to do for refresh-info.
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| 350 | #
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| 351 | refresh-info)
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| 352 | ;;
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| 353 |
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| 354 | #
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| 355 | # For the rescue action, we just quit without removing the PXE config or
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| 356 | # rebooting the box. The admin will do that once the system has been rescued.
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| 357 | #
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| 358 | rescue)
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| 359 | InfoMsg "rescue: exiting. Admin must remove PXE config and reboot manually when done."
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| 360 | exit 0;
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| 361 | ;;
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| 362 |
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| 363 | *) ErrorMsgExit 98 "Huh? MY_ACTION='${MY_ACTION}'"
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| 364 | ;;
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| 365 | esac
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| 366 |
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| 367 | #
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| 368 | # If we get here, remove the PXE config and reboot immediately.
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| 369 | #
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| 370 | InfoMsg "'${MY_ACTION}' - done";
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| 371 | if test -n "${MY_REBOOT_WHEN_DONE}"; then
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| 372 | sync
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| 373 | if rm -f "${MY_PXELINUX_CFG_FILE}"; then
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| 374 | InfoMsg "removed ${MY_PXELINUX_CFG_FILE}";
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| 375 | else
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| 376 | ErrorMsgExit 99 "failed to remove ${MY_PXELINUX_CFG_FILE}";
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| 377 | fi
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| 378 | sync
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| 379 | InfoMsg "rebooting";
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| 380 | reboot
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| 381 | fi
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| 382 | exit 0
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| 383 |
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