Added handle_failed_lunpaths.sh
Added handle_failed_lunpaths.sh
This commit is contained in:
Patrick Van der Veken
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5d421475fb
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323
handle_failed_lunpaths/handle_failed_lunpaths.sh
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323
handle_failed_lunpaths/handle_failed_lunpaths.sh
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#!/bin/env ksh
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#******************************************************************************
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# @(#) handle_failed_lunpaths.sh
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#******************************************************************************
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# @(#) Copyright (C) 2014 by KUDOS BVBA <info@kudos.be>. All rights reserved.
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#
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# This program is a free software; you can redistribute it and/or modify
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# it under the same terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details
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#******************************************************************************
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# @(#) MAIN: handle_failed_lunpaths.sh
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# DOES: simple script to show and/or remove failed lunpaths (HP-UX 11.31/Agile)
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# EXPECTS: (see --help for more options)
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# REQUIRES: check_platform(), check_exec_user(), die(), display_usage(),
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# do_cleanup(), log(), warn()
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# For other pre-requisites see the documentation in display_usage()
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#******************************************************************************
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#******************************************************************************
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# DATA structures
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#******************************************************************************
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# ------------------------- CONFIGURATION starts here -------------------------
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# define the V.R.F (version/release/fix)
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HPUX_VRF="1.0.0"
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# UNIX user this script should run as
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EXEC_USER="root"
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# location of log directory (default)
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LOG_DIR="/var/adm"
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# location of temporary working storage
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TMP_DIR="/var/tmp"
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# ------------------------- CONFIGURATION ends here ---------------------------
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# miscelleaneous
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PATH=${PATH}:/usr/bin:/usr/sbin:/usr/local/bin
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SCRIPT_NAME=$(basename $0)
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SCRIPT_DIR=$(dirname $0)
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HOST_NAME=$(hostname)
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TMP_FILE="${TMP_DIR}/.${SCRIPT_NAME}.$$"
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LOG_FILE="${LOG_DIR}/${SCRIPT_NAME}.log"
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# command-line parameters
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ARG_REMOVE=0 # remove failed lunpath (0=no|1=yes; default: 0)
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ARG_DISK=""
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ARG_SKIP_CRA="" # skip_cra option for 'scsimgr disable'
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ARG_LOG=1 # logging is on by default
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ARG_VERBOSE=1 # STDOUT is on by default
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#******************************************************************************
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# FUNCTION routines
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#******************************************************************************
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# -----------------------------------------------------------------------------
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function check_platform
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{
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if [[ "$(uname -s)" != "HP-UX" ]]
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then
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print -u2 "ERROR: must be run on a HP-UX system"
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exit 1
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fi
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if [[ "$(uname -r)" != "B.11.31" ]]
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then
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print -u2 "ERROR: must be run on version B.11.31"
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exit 1
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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function check_exec_user
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{
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(IFS='()'; set -- $(id); print $2) | read UID
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if [[ "${UID}" != "${EXEC_USER}" ]]
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then
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print -u2 "ERROR: must be run as user '${EXEC_USER}'"
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exit 1
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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# log an ERROR: message (via ARG) and exit.
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function die
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{
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NOW="$(date '+%d-%h-%Y %H:%M:%S')"
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# process ARG (if any)
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if [[ -n "$1" ]]
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then
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if (( ARG_LOG != 0 ))
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then
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print - "$*" | while read LOG_LINE
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do
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# filter leading 'ERROR:'
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LOG_LINE="${LOG_LINE#ERROR: *}"
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print "${NOW}: ERROR: [$$]:" "${LOG_LINE}" >> ${LOG_FILE}
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done
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fi
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print - "$*" | while read LOG_LINE
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do
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# filter leading 'ERROR:'
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LOG_LINE="${LOG_LINE#ERROR: *}"
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print -u2 "ERROR:" "${LOG_LINE}"
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done
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fi
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# handle alert
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(( ARG_SEND_ALERT != 0 )) && print "${LOG_STDIN}" | send_alert "$*"
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# finish up work
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do_cleanup
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exit 1
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}
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# -----------------------------------------------------------------------------
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function display_usage
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{
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cat << EOT
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**** ${SCRIPT_NAME} ****
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**** (c) KUDOS BVBA - UNIX (Patrick Van der Veken) ****
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Show or removes failed LUNpaths. Only works on HP-UX 11.31 with agile DSFs.
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Syntax: ${SCRIPT_DIR}/${SCRIPT_NAME} [--help] | [--version] | [--no-log] ( [--remove] [--skip_cra] ) [--disk=<diskXY> ]
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Parameters:
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--disk : operate only on the given disk/lun, otherwise operate on all disks/luns
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--no-log : do not log any messages to the script log file.
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--remove : do the actual removal of the failed paths (default: show only)
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--skip-cra : perform 'scsimgr disable' actions with CRA (Critical Resource Analysis)
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--version : show the script version/release/fix
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EOT
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return 0
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}
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# -----------------------------------------------------------------------------
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function do_cleanup
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{
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log "performing cleanup ..."
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# remove temporary file(s)
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if [[ -f ${TMP_FILE} ]]
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then
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rm -f ${TMP_FILE} >/dev/null
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log "${TMP_FILE} temporary file removed"
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fi
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log "*** finish of ${SCRIPT_NAME} [${CMD_LINE}] ***"
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return 0
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}
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# -----------------------------------------------------------------------------
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# log an INFO: message (via ARG).
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function log
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{
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NOW="$(date '+%d-%h-%Y %H:%M:%S')"
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# process ARG (if any)
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if [[ -n "$1" ]]
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then
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if (( ARG_LOG != 0 ))
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then
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print - "$*" | while read LOG_LINE
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do
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# filter leading 'INFO:'
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LOG_LINE="${LOG_LINE#INFO: *}"
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print "${NOW}: INFO: [$$]:" "${LOG_LINE}" >> ${LOG_FILE}
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done
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fi
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if (( ARG_VERBOSE != 0 ))
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then
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print - "$*" | while read LOG_LINE
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do
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# filter leading 'INFO:'
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LOG_LINE="${LOG_LINE#INFO: *}"
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print "INFO:" "${LOG_LINE}"
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done
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fi
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fi
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return 0
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}
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# -----------------------------------------------------------------------------
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# log a WARN: message (via ARG).
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function warn
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{
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NOW="$(date '+%d-%h-%Y %H:%M:%S')"
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# process ARG (if any)
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if [[ -n "$1" ]]
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then
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if (( ARG_LOG != 0 ))
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then
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print - "$*" | while read LOG_LINE
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do
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# filter leading 'WARN:'
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LOG_LINE="${LOG_LINE#WARN: *}"
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print "${NOW}: WARN: [$$]:" "${LOG_LINE}" >>${LOG_FILE}
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done
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fi
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if (( ARG_VERBOSE != 0 ))
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then
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print - "$*" | while read LOG_LINE
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do
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# filter leading 'WARN:'
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LOG_LINE="${LOG_LINE#WARN: *}"
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print "WARN:" "${LOG_LINE}"
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done
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fi
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fi
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return 0
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}
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#******************************************************************************
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# MAIN routine
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#******************************************************************************
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# parse arguments/parameters
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CMD_LINE="$@"
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for PARAMETER in ${CMD_LINE}
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do
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case ${PARAMETER} in
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-disk*)
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ARG_DISK="${PARAMETER#-disk=}"
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;;
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--disk*)
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ARG_DISK="${PARAMETER#--disk=}"
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;;
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-remove|--remove)
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ARG_REMOVE=1
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shift
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;;
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-skip-cra|--skip-cra)
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ARG_SKIP_CRA=" skip_cra"
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;;
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-V|-version|--version)
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print "INFO: $0: ${HPUX_VRF}"
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exit 0
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;;
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\? |-h|-help|--help)
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display_usage
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exit 0
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;;
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esac
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done
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# startup checks
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check_platform && check_exec_user
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# catch shell signals
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trap 'do_cleanup; exit' 1 2 3 15
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log "*** start of ${SCRIPT_NAME} [${CMD_LINE}] ***"
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(( ARG_LOG != 0 )) && log "logging takes places in ${LOG_FILE}"
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# set disk list
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if [[ -z "${ARG_DISK}" ]]
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then
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log "operating on ALL disks/luns"
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ls -1 /dev/rdisk/disk* 2>/dev/null >${TMP_FILE}
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else
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ls -1 /dev/rdisk/disk* >/dev/null 2>/dev/null
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if (( $? != 0 ))
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then
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die "disk ${ARG_DISK} does not exist?"
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else
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log "operating on a specific disk/lun: ${ARG_DISK}"
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print "/dev/rdisk/${ARG_DISK}" >${TMP_FILE}
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fi
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fi
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(( ARG_REMOVE == 0 )) && log "PREVIEW only: showing failed paths without removal"
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# perform the magic
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while read DISK
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do
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scsimgr -p lun_map -D ${DISK} 2>/dev/null | grep -i 'failed' 2>/dev/null |\
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while read SCSI_LINE
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do
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log "${SCSI_LINE}"
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HW_PATH=$(print "${SCSI_LINE}" | cut -f3 -d':')
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if (( ARG_REMOVE == 1 ))
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then
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scsimgr -f disable -H "${HW_PATH}" ${ARG_SKIP_CRA}
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RC=$?
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if (( RC == 0 ))
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then
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log "disabled ${HW_PATH}"
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rmsf -H "${HW_PATH}" 2>/dev/null
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RC=$?
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if (( RC == 0))
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then
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log "removed ${HW_PATH}"
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else
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warn "failed to remove ${HW_PATH}"
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fi
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else
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warn "failed to disable ${HW_PATH}"
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fi
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fi
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done
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done <${TMP_FILE}
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# finish up work
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do_cleanup
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#******************************************************************************
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# END of script
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#******************************************************************************
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