mirror of
https://github.com/ibm-s390-linux/s390-tools.git
synced 2026-08-05 02:14:52 +00:00
dbginfo.sh: cleanup 2.x kernel & adding timeout
- clenaup outdated kernel - we no longer have 2.x kenrel in support - add timeout on command excution - ensure to not miss all data for a single command to hang Signed-off-by: Joern Siglen <siglen@de.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Joern Siglen
committed by
Jan Höppner
Jan Höppner
parent
5b96d86538
commit
68ff79e4c3
@@ -5,7 +5,9 @@ Release history for s390-tools (MIT version)
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For Linux kernel version: 5.xx
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Changes of existing tools:
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- dbginfo.sh: cleanup of outdated sections and general code rework
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- dbginfo.sh: Collect zipl boot menu entries from boot loader specification
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- dbginfo.sh: add collection in area of timedate, coredump and --check option
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Bug Fixes:
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@@ -12,12 +12,47 @@
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LC_ALL=C
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export LC_ALL
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# The general name of this script
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readonly SCRIPTNAME="${0##*/}"
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########################################
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# Global used variables
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readonly SCRIPTNAME="${0##*/}" # general name of this script
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#
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readonly DOCKER=$(if which docker >/dev/null 2>&1; then echo "YES"; else echo "NO"; fi)
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readonly HW="$(uname -i 2>/dev/null)"
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# retrieve and split kernel version
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readonly KERNEL_BASE="$(uname -r 2>/dev/null)"
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readonly KERNEL_VERSION=$(echo ${KERNEL_BASE} | cut -d'.' -f1 )
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readonly KERNEL_MAJOR_REVISION=$(echo ${KERNEL_BASE} | cut -d'.' -f2 )
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readonly KERNEL_MINOR_REVISION=$(echo ${KERNEL_BASE} | cut -d'.' -f3 | sed 's/[^0-9].*//g')
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readonly KERNEL_INFO=${KERNEL_VERSION}.${KERNEL_MAJOR_REVISION}.${KERNEL_MINOR_REVISION}
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readonly KVM=$(if which virsh >/dev/null 2>&1; then echo "YES"; else echo "NO"; fi)
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# The file to indicate that another instance of the script is already running
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readonly LOCKFILE="/tmp/${SCRIPTNAME}.lock"
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# check limits for logfiles like /var/log/messages
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readonly LOG_FILE_SIZE_CHECK=50 # max logfile size in MB
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readonly LOG_FILE_AGE_CHECK=7 # age in days to include for size checking
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# distro info
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readonly OSPRETTY="$(cat /etc/os* 2>/dev/null | grep -m1 PRETTY_NAME | sed 's/\"//g')"
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readonly OS_NAME="${OSPRETTY##*=}"
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# The processor ID for the first processor
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readonly PROCESSORID="$(grep -E ".*processor 0:.*" /proc/cpuinfo | \
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sed 's/.*identification[[:space:]]*\=[[:space:]]*\([[:alnum:]]*\).*/\1/g')"
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readonly PROCESSORVERSION="$(grep -E ".*processor 0:.*" /proc/cpuinfo | \
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sed 's/.*version[[:space:]]*\=[[:space:]]*\([[:alnum:]]*\).*/\1/g')"
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if test "x${PROCESSORVERSION}" = "xFF" || test "x${PROCESSORVERSION}" = "xff"; then
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RUNTIME_ENVIRONMENT=$(grep -E "VM00.*Control Program.*" /proc/sysinfo | \
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sed 's/.*:[[:space:]]*\([[:graph:]]*\).*/\1/g')
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else
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RUNTIME_ENVIRONMENT="LPAR"
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fi
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readonly TOS=15 # timeout seconds for command execution
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readonly ZDEV_CONF=$(lszdev --configured 2>/dev/null | wc -l)
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readonly ZDEV_OFF=$(lszdev --offline 2>/dev/null | wc -l)
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readonly ZDEV_ONL=$(lszdev --online 2>/dev/null | wc -l)
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paramWORKDIR_BASE="/tmp/" # initial default path
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########################################
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# print version info
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# print dbginfo.sh version info
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print_version() {
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cat <<EOF
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${SCRIPTNAME}: Debug information script version %S390_TOOLS_VERSION%
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@@ -25,11 +60,9 @@ Copyright IBM Corp. 2002, 2021
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EOF
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}
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########################################
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# print how to use this script
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print_usage()
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{
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print_usage() {
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print_version
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cat <<EOF
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@@ -41,11 +74,12 @@ This script collects runtime, configuration and trace information on
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a Linux on IBM Z installation for debugging purposes.
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It also traces information about z/VM if the Linux runs under z/VM.
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KVM or DOCKER data ist collected on a host serving this.
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Default location for data collection and final tar file is "/tmp/".
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The collected information is written to a TAR archive named
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/tmp/DBGINFO-[date]-[time]-[hostname]-[processorid].tgz
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DBGINFO-[date]-[time]-[hostname]-[processorid].tgz
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where [date] and [time] are the date and time when debug data is collected.
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[hostname] indicates the hostname of the system the data was collected from.
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@@ -53,24 +87,82 @@ The [processorid] is taken from the processor 0 and indicates the processor
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identification.
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Options:
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-d|--directory specify the directory where the data collection
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stores the temporary data and the final archive.
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-h|--help print this help
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-v|--version print version information
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-c|--check online quick check (no data collection)
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Please report bugs to: linux390@de.ibm.com
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EOF
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}
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########################################
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# check for oversize logfiles and missing rotation
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logfile_checker() {
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local counter
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local logfile
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local logfiles
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# find files bigger than recommended
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counter=$(find $1 -maxdepth 1 -type f -mtime -${LOG_FILE_AGE_CHECK} \
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-size ${LOG_FILE_SIZE_CHECK}M | wc -l)
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echo " ${counter} logfiles over ${LOG_FILE_SIZE_CHECK} MB"
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# maybe check for rotation of base names
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if [ ${counter} -ne 0 ]; then
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for logfile in $(find $1 -maxdepth 1 -type f -mtime -${LOG_FILE_AGE_CHECK} \
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-size ${LOG_FILE_SIZE_CHECK}M -print); do
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# use a neutral separtor ':' as concat is different in some bash
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# insert the 'blank' for later use in for loop
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# add the base name before '.' or '-' only for checks
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logfiles="${logfiles}: ${logfile%%[.-]*}"
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done
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# change separator to new line for sorting
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logfiles=$(echo "${logfiles}" | sed s'/:/\n/g' | sort -u)
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for logfile in ${logfiles}; do
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counter=$(ls ${logfile}* 2>/dev/null | wc -l)
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if [ ${counter} -eq 1 ]; then
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echo " CHECK - ${logfile} may miss a rotation"
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else
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echo " OK - ${logfile}* may have a rotation in place: ${counter} files"
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fi
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done
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fi
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}
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########################################
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# print basic info and online checks
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print_check() {
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print_version
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cat <<EOF
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Hardware platform = ${HW}
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Runtime environment = ${RUNTIME_ENVIRONMENT}
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Kernel version = ${KERNEL_INFO}
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OS version / distro = ${OS_NAME}
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KVM host = ${KVM}
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DOCKER host = ${DOCKER}
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Current user = $(whoami) (must be root for data collection)
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Date and time = $(date)
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Uptime =$(uptime)
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Number of coredumps = $(corecumpctl 2>/dev/null | wc -l)
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zdevice onl/conf/offl = ${ZDEV_ONL} / ${ZDEV_CONF} / ${ZDEV_OFF}
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Log file check =$(logfile_checker "/var/log*")
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Working directory = $(ls -d ${paramWORKDIR_BASE} 2>&1 && df -k ${paramWORKDIR_BASE})
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$(ls -ltr ${paramWORKDIR_BASE}/DBGINFO*tgz 2>/dev/null | tail -2)
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$(ls ${LOCKFILE} 2>/dev/null && echo " WARNING: dbginfo running since: $(cat ${LOCKFILE})")
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This is a console output only - no data was saved using option -c !
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EOF
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}
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#######################################
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# Parsing the command line and pre checks
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#
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paramWORKDIR_BASE="/tmp/"
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while [ ${#} -gt 0 ]; do
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case ${1} in
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--help|-h)
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@@ -87,11 +179,19 @@ while [ ${#} -gt 0 ]; do
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echo "${SCRIPTNAME}: Error: No directory specified for data collection!"
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echo
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exit 1
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elif test ! -d "${paramWORKDIR_BASE}"; then
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echo "${SCRIPTNAME}: Error: The specified directory \"${paramWORKDIR_BASE}\" does not exist!"
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echo
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exit 1
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else
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# jump to next param, if already last the final shift can do termination
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# jump to next param
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shift
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fi
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;;
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--check|-c)
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print_check
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exit 0
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;;
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-*|--*|*)
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echo
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echo "${SCRIPTNAME}: invalid option \"${1}\""
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@@ -100,17 +200,10 @@ while [ ${#} -gt 0 ]; do
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exit 1
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;;
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esac
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# next parameter
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# next parameter, if already last the final shift will do termination
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shift
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done
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# check for a valid path
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if test ! -d "${paramWORKDIR_BASE}"; then
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echo "${SCRIPTNAME}: Error: The specified directory \"${paramWORKDIR_BASE}\" does not exist!"
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echo
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exit 1
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fi
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# finally verification to run as root
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if test "$(/usr/bin/id -u 2>/dev/null)" -ne 0; then
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echo "${SCRIPTNAME}: Error: You must be user root to run \"${SCRIPTNAME}\"!"
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@@ -133,12 +226,6 @@ readonly SYSTEMHOSTNAME="$(hostname -s 2>/dev/null)"
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# The kernel release version as delivered from uname -r
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readonly KERNEL_RELEASE_VERSION="$(uname -r 2>/dev/null)"
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# The processor ID for the first processor
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readonly PROCESSORID="$(grep -E ".*processor 0:.*" /proc/cpuinfo | \
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sed 's/.*identification[[:space:]]*\=[[:space:]]*\([[:alnum:]]*\).*/\1/g')"
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# The processor version for the first processor
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readonly PROCESSORVERSION="$(grep -E ".*processor 0:.*" /proc/cpuinfo | \
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sed 's/.*version[[:space:]]*\=[[:space:]]*\([[:alnum:]]*\).*/\1/g')"
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# The current date
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readonly DATETIME="$(date +%Y-%m-%d-%H-%M-%S 2>/dev/null)"
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@@ -158,9 +245,6 @@ readonly WORKARCHIVE="${WORKDIR_BASE}${WORKDIR_CURRENT}.tgz"
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# The log file of activities from this script execution
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readonly LOGFILE="${WORKPATH}dbginfo.log"
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# The file to indicate that another instance of the script is already running
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readonly LOCKFILE="/tmp/${SCRIPTNAME}.lock"
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# File that includes output of Linux commands
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readonly OUTPUT_FILE_CMD="${WORKPATH}runtime.out"
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@@ -203,39 +287,6 @@ readonly OUTPUT_FILE_KVM="${WORKPATH}kvm_runtime.out"
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# Mount point of the debug file system
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readonly MOUNT_POINT_DEBUGFS="/sys/kernel/debug"
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# The kernel version (e.g. '2' from 2.6.32 or '3' from 3.2.1)
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readonly KERNEL_VERSION=$(uname -r 2>/dev/null | cut -d'.' -f1)
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# The kernel major revision number (e.g. '6' from 2.6.32 or '2' from 3.2.1)
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readonly KERNEL_MAJOR_REVISION=$(uname -r 2>/dev/null | cut -d'.' -f2)
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# The kernel mainor revision number (e.g. '32' from 2.6.32 or '1' from 3.2.1)
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readonly KERNEL_MINOR_REVISION=$(uname -r 2>/dev/null | cut -d'.' -f3 | sed 's/[^0-9].*//g')
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# Is this kernel supporting sysfs - since 2.4 (0=yes, 1=no)
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if test "${KERNEL_VERSION}" -lt 2 ||
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( test "${KERNEL_VERSION}" -eq 2 && test "${KERNEL_MAJOR_REVISION}" -le 4 ); then
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readonly LINUX_SUPPORT_SYSFS=1
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else
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readonly LINUX_SUPPORT_SYSFS=0
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fi
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# Is this kernel potentially using the /sys/kernel/debug feature - since 2.6.13 (0=yes, 1=no)
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if test "${KERNEL_VERSION}" -lt 2 ||
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( test "${KERNEL_VERSION}" -eq 2 &&
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( test "${KERNEL_MAJOR_REVISION}" -lt 6 ||
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( test "${KERNEL_MAJOR_REVISION}" -eq 6 && test "${KERNEL_MINOR_REVISION}" -lt 13 ))); then
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readonly LINUX_SUPPORT_SYSFSDBF=1
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else
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readonly LINUX_SUPPORT_SYSFSDBF=0
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fi
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if test "x${PROCESSORVERSION}" = "xFF" || test "x${PROCESSORVERSION}" = "xff"; then
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readonly RUNTIME_ENVIRONMENT=$(grep -E "VM00.*Control Program.*" /proc/sysinfo| sed 's/.*:[[:space:]]*\([[:graph:]]*\).*/\1/g')
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else
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readonly RUNTIME_ENVIRONMENT="LPAR"
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fi
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# define order of collection steps
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ALL_STEPS="\
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collect_cmdsout\
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@@ -310,26 +361,6 @@ if test -e /proc/scsi; then
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"
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fi
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# Adding files to PROCFILES in case we run on Kernel 2.4 or older
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if test "${LINUX_SUPPORT_SYSFS}" -eq 1; then
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PROCFILES="${PROCFILES}\
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/proc/chpids\
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/proc/chandev\
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/proc/ksyms\
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/proc/lvm/global\
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/proc/subchannels\
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"
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fi
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# Adding s390dbf files to PROCFILE in case we run on Kernel lower than 2.6.13
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if test "${LINUX_SUPPORT_SYSFSDBF}" -eq 1; then
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if test -e /proc/s390dbf; then
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PROCFILES="${PROCFILES}\
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$(find /proc/s390dbf -type f -not -path "*/raw" -not -path "*/flush" 2>/dev/null)\
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"
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fi
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fi
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########################################
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LOGFILES="\
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@@ -706,11 +737,7 @@ collect_sysfs() {
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local file_name
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debugfs_mounted=0
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# Requires kernel version newer then 2.4
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if test "${LINUX_SUPPORT_SYSFS}" -eq 0; then
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pr_syslog_stdout "${step_num} Collecting sysfs"
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# Requires kernel version of 2.6.13 or newer
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if test "${LINUX_SUPPORT_SYSFSDBF}" -eq 0; then
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if ! grep -qE "${MOUNT_POINT_DEBUGFS}.*debugfs" /proc/mounts 2>/dev/null; then
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if mount -t debugfs debugfs "${MOUNT_POINT_DEBUGFS}" >/dev/null 2>&1; then
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sleep 2
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@@ -719,7 +746,6 @@ collect_sysfs() {
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pr_log_stdout "${SCRIPTNAME}: Warning: Unable to mount debugfs at \"${MOUNT_POINT_DEBUGFS}\""
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fi
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fi
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fi
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# Collect sysfs files using multiple threads (-J 1) while excluding
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# files known to block on read (-x). Stop reading a file that takes
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@@ -748,9 +774,6 @@ collect_sysfs() {
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if test ${debugfs_mounted} -eq 1; then
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umount "${MOUNT_POINT_DEBUGFS}"
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fi
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else
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pr_syslog_stdout "${step_num} Collecting sysfs skipped. Kernel $(uname -r) must be newer than 2.4"
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fi
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pr_log_stdout " "
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}
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@@ -766,7 +789,7 @@ collect_logfiles() {
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call_collect_file "${file_name}"
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done
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pr_log_stdout " "
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pr_log_stdout "$(logfile_checker "/var/log*")"
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}
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@@ -1091,34 +1114,36 @@ post_processing() {
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# Be aware that this output must be
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# redirected into a separate logfile
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call_run_command() {
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local cmd
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local logfile
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local raw_cmd
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cmd="${1}"
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logfile="${2}"
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raw_cmd=$(echo "${cmd}" | sed -ne 's/^\([^[:space:]]*\).*$/\1/p')
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local rc
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local cmd="${1}"
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local logfile="${2}"
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local raw_cmd=$(echo "${cmd}" | sed -ne 's/^\([^[:space:]]*\).*$/\1/p')
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echo "#######################################################" >> "${logfile}"
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echo "${USER}@${SYSTEMHOSTNAME:-localhost}> ${cmd}" >> "${logfile}"
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# check if command exists
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if ! which "${raw_cmd}" >/dev/null 2>&1; then
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# check if command is a builtin
|
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if ! command -v "${raw_cmd}" >/dev/null 2>&1; then
|
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echo "${SCRIPTNAME}: Warning: Command \"${raw_cmd}\" not available" >> "${logfile}"
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echo >> "${logfile}"
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return 1
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fi
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# check if calling command and timeout exist
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if which "${raw_cmd}" >/dev/null 2>&1 && which timeout >/dev/null 2>&1; then
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eval timeout ${TOS} "${cmd}" >> ${logfile} 2>&1
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rc=$?
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# check if command is a builtin (no use of timeout possible)
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elif command -v "${raw_cmd}" >/dev/null 2>&1; then
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eval "${cmd}" >> ${logfile} 2>&1
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rc=$?
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else
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echo "${SCRIPTNAME}: Warning: Command \"${raw_cmd}\" not available" >> "${logfile}"
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echo >> "${logfile}"
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return 1
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fi
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if ! eval "${cmd}" >> "${logfile}" 2>&1; then
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echo "${SCRIPTNAME}: Warning: Command \"${cmd}\" failed" >> "${logfile}"
|
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echo >> "${logfile}"
|
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return 1
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# log a warning on rc not 0 and define return
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if [ ${rc} ]; then
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echo >> "${logfile}"
|
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return 0
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else
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echo >> "${logfile}"
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return 0
|
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echo "${SCRIPTNAME}: Warning: Command \"${cmd}\" failed" >> "${logfile}"
|
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echo >> "${logfile}"
|
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return 1
|
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fi
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}
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@@ -1285,9 +1310,8 @@ pr_syslog_stdout()
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logger -t "${SCRIPTNAME}" "$@"
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}
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||||
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|
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###############################################################################
|
||||
# Running the script
|
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# Running the script (main)
|
||||
|
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environment_setup
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print_version
|
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@@ -1299,9 +1323,10 @@ exec 8>&1 9>&2 >"${LOGFILE}" 2>&1
|
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trap emergency_exit SIGHUP SIGINT SIGTERM
|
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|
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pr_log_stdout ""
|
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pr_log_stdout "Hardware platform = $(uname -i)"
|
||||
pr_log_stdout "Kernel version = ${KERNEL_VERSION}.${KERNEL_MAJOR_REVISION}.${KERNEL_MINOR_REVISION} ($(uname -r 2>/dev/null))"
|
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pr_log_stdout "Hardware platform = ${HW}"
|
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pr_log_stdout "Kernel version = ${KERNEL_INFO} (${KERNEL_BASE})"
|
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pr_log_stdout "Runtime environment = ${RUNTIME_ENVIRONMENT}"
|
||||
pr_log_stdout "OS version / distro = ${OS_NAME}"
|
||||
pr_log_stdout ""
|
||||
|
||||
logger -t "${SCRIPTNAME}" "Starting data collection"
|
||||
|
||||
@@ -14,8 +14,10 @@ for debugging Linux on IBM Z
|
||||
This script collects runtime, configuration and trace information that can
|
||||
be used to debug a Linux on IBM Z instance.
|
||||
For Linux on z/VM, the script also traces information about the z/VM system.
|
||||
KVM or DOCKER data ist collected on a host serving this.
|
||||
|
||||
The debug information is written to a file
|
||||
/tmp/DBGINFO\-<date>\-<time>\-<hostname>\-<processorid>.tgz
|
||||
/<DIRECTORY>/DBGINFO\-<date>\-<time>\-<hostname>\-<processorid>.tgz
|
||||
where [date] and [time] are the date and time when the debug data was
|
||||
collected. [hostname] indicates the hostname of the system the data was
|
||||
collected from. The [processorid] is taken from the processor 0 and indicates
|
||||
@@ -32,7 +34,12 @@ Print version information, then exit.
|
||||
|
||||
.TP
|
||||
\fB\-d <DIRECTORY>\fP, \fB\-\-directory <DIRECTORY>\fP
|
||||
Specify the DIRECTORY where the data collection stores the temporary data and the final archive. The specified directory must already exist. If this parameter is not specified, /tmp is used by default.
|
||||
Specify the DIRECTORY where the data collection stores the temporary data and the final archive.
|
||||
The specified directory must already exist. If this parameter is not specified, /tmp is used by default.
|
||||
|
||||
.TP
|
||||
\fB\-c\fP, \fB\-\-check\fP
|
||||
Print online quick check (not saving any data) - can be combind with a preceding -d option.
|
||||
|
||||
.SH FILES
|
||||
A .tgz file of the form
|
||||
@@ -56,48 +63,57 @@ Copyright IBM Corp. 2002, 2021
|
||||
.PP
|
||||
Hardware platform = s390x
|
||||
.br
|
||||
Kernel version = 5.4.0 (5.4.0-70-generic)
|
||||
.br
|
||||
Runtime environment = z/VM
|
||||
.br
|
||||
Kernel version = 4.18.0 (4.18.0-305.el8.s390x)
|
||||
.br
|
||||
OS version / distro = Red Hat Enterprise Linux 8.4 (Ootpa)
|
||||
.br
|
||||
Date and time of info = 2021-08-26-15-27-58
|
||||
.PP
|
||||
1 of 16: Collecting command output
|
||||
1 of 18: Collecting command output
|
||||
.PP
|
||||
2 of 16: Collecting z/VM command output
|
||||
2 of 18: Collecting hyptop for z/VM - 5s output
|
||||
.PP
|
||||
3 of 16: Collecting procfs
|
||||
3 of 18: Collecting z/VM output
|
||||
.PP
|
||||
4 of 16: Collecting sysfs
|
||||
4 of 18: Collecting procfs
|
||||
.PP
|
||||
5 of 16: Collecting log files
|
||||
5 of 18: Collecting sysfs
|
||||
.PP
|
||||
6 of 16: Collecting config files
|
||||
6 of 18: Collecting config files
|
||||
.PP
|
||||
7 of 16: Collecting osa oat output
|
||||
7 of 18: Collecting network output
|
||||
.PP
|
||||
8 of 16: Collecting ethtool output
|
||||
8 of 18: Collecting osa oat output
|
||||
.PP
|
||||
9 of 16: Collecting tc output
|
||||
9 of 18: Collecting ethtool output
|
||||
.PP
|
||||
10 of 16: Collecting bridge output
|
||||
10 of 18: Collecting Trafic Control output
|
||||
.PP
|
||||
11 of 16: Collecting OpenVSwitch output
|
||||
11 of 18: Collecting bridge output
|
||||
.PP
|
||||
12a of 16: Collecting docker container
|
||||
12b of 16: Collecting docker network
|
||||
12 of 18: Skip OpenVSwitch: ovs-vsctl not available
|
||||
.PP
|
||||
13 of 16: Collecting nvme output
|
||||
13 of 18: Skip KVM: no virsh command
|
||||
.PP
|
||||
14 of 16: Collecting KVM data
|
||||
14 of 18: Collecting docker output
|
||||
.PP
|
||||
15 of 16: Postprocessing
|
||||
15 of 18: Collecting NVME storage output
|
||||
.PP
|
||||
16 of 16: Finalizing: Creating archive with collected data
|
||||
16 of 18: Collecting log files
|
||||
.PP
|
||||
0 logfiles over 50 MB
|
||||
.PP
|
||||
17 of 18: Postprocessing
|
||||
.PP
|
||||
18 of 18: Finalizing: Creating archive with collected data
|
||||
.PP
|
||||
Collected data was saved to:
|
||||
.br
|
||||
>> /data\-collection/DBGINFO\-2021\-04\-20\-14\-00\-07\-host\-012345.tgz <<
|
||||
>> /data\-collection/DBGINFO\-2021\-08\-26\-15\-27\-58\-host\-012345.tgz <<
|
||||
.br
|
||||
Review the collected data before sending to your service organization.
|
||||
Please review all collected data before sending to your service organization.
|
||||
.SH HINTS
|
||||
Run the script with root authority.
|
||||
.br
|
||||
|
||||
Reference in New Issue
Block a user