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Edit: scsi_logging_level
#!/usr/bin/bash ############################################################################### # Conveniently create and set scsi logging level, show SCSI_LOG fields in human # readable form. # # (C) Copyright IBM Corp. 2006 # # Modified by D. Gilbert to replace the use of sysctl [20080218] # Lat change: D. Gilbert 20150219 ############################################################################### REVISION="1.0" SCRIPTNAME="scsi_logging_level" declare -i LOG_ERROR=0 declare -i LOG_TIMEOUT=0 declare -i LOG_SCAN=0 declare -i LOG_MLQUEUE=0 declare -i LOG_MLCOMPLETE=0 declare -i LOG_LLQUEUE=0 declare -i LOG_LLCOMPLETE=0 declare -i LOG_HLQUEUE=0 declare -i LOG_HLCOMPLETE=0 declare -i LOG_IOCTL=0 declare -i LEVEL=0 SET=0 GET=0 CREATE=0 OPTS=$(getopt -o hvcgsa:E:T:S:I:M:L:H: --long \ help,version,create,get,set,all:,error:,timeout:,scan:,ioctl:,\ midlevel:,mlqueue:,mlcomplete:,lowlevel:,llqueue:,llcomplete:,\ highlevel:,hlqueue:,hlcomplete: -n \'$SCRIPTNAME\' -- "$@") eval set -- "$OPTS" # print version info printversion() { cat <<EOF %S390_TOOLS_VERSION% ($SCRIPTNAME $REVISION) (C) Copyright IBM Corp. 2006 EOF } # print usage and help printhelp() { cat <<EOF Usage: $SCRIPTNAME [OPTIONS] Create, get or set scsi logging level. Options: -h, --help print this help -v, --version print version information -s, --set create and set logging level as specified on command line -g, --get get current logging level and display it -c, --create create logging level as specified on command line -a, --all specify value for all SCSI_LOG fields -E, --error specify SCSI_LOG_ERROR -T, --timeout specify SCSI_LOG_TIMEOUT -S, --scan specify SCSI_LOG_SCAN -M, --midlevel specify SCSI_LOG_MLQUEUE and SCSI_LOG_MLCOMPLETE --mlqueue specify SCSI_LOG_MLQUEUE --mlcomplete specify SCSI_LOG_MLCOMPLETE -L, --lowlevel specify SCSI_LOG_LLQUEUE and SCSI_LOG_LLCOMPLETE --llqueue specify SCSI_LOG_LLQUEUE --llcomplete specify SCSI_LOG_LLCOMPLETE -H, --highlevel specify SCSI_LOG_HLQUEUE and SCSI_LOG_HLCOMPLETE --hlqueue specify SCSI_LOG_HLQUEUE --hlcomplete specify SCSI_LOG_HLCOMPLETE -I, --ioctl specify SCSI_LOG_IOCTL Exactly one of the options "-c", "-g" and "-s" has to be specified. Valid values for SCSI_LOG fields are integers from 0 to 7. Note: Several SCSI_LOG fields can be specified using several options. When multiple options specify same SCSI_LOG field the most specific option has precedence. Example: "scsi_logging_level --hlqueue 3 --highlevel 2 --all 1 -s" sets SCSI_LOG_HLQUEUE=3, SCSI_LOG_HLCOMPLETE=2 and assigns all other SCSI_LOG fields the value 1. EOF } check_level() { num=$(($1)) if [ $num != "$1" ] ; then invalid_cmdline "log level '$1' not a number" elif [ $num -lt 0 ] || [ $num -gt 7 ] ; then invalid_cmdline "log level '$1' out of range, expect '0' to '7'" fi } # check cmd line arguments check_cmdline() { while true ; do case "$1" in -a|--all) _ALL="$2"; check_level "$2" shift 2;; -c|--create) CREATE=1; shift 1;; -g|--get) GET=1 shift 1;; -h|--help) printhelp exit 0;; -s|--set) SET=1 shift 1;; -v|--version) printversion exit 0;; -E|--error) _ERROR="$2"; check_level "$2" shift 2;; -T|--timeout) _TIMEOUT="$2"; check_level "$2" shift 2;; -S|--scan) _SCAN="$2"; check_level "$2" shift 2;; -M|--midlevel) _ML="$2"; check_level "$2" shift 2;; --mlqueue) _MLQUEUE="$2"; check_level "$2" shift 2;; --mlcomplete) _MLCOMPLETE="$2"; check_level "$2" shift 2;; -L|--lowlevel) _LL="$2"; check_level "$2" shift 2;; --llqueue) _LLQUEUE="$2"; check_level "$2" shift 2;; --llcomplete) _LLCOMPLETE="$2"; check_level "$2" shift 2;; -H|--highlevel) _HL="$2"; check_level "$2" shift 2;; --hlqueue) _HLQUEUE="$2"; check_level "$2" shift 2;; --hlcomplete) _HLCOMPLETE="$2"; check_level "$2" shift 2;; -I|--ioctl) _IOCTL="$2"; check_level "$2" shift 2;; --) shift; break;; *) echo "Internal error!" ; exit 1;; esac done if [ -n "$*" ] then invalid_cmdline invalid parameter "$@" fi if [ $GET = "1" -a $SET = "1" ] then invalid_cmdline options \'-c\', \'-g\' and \'-s\' are mutual exclusive elif [ $GET = "1" -a $CREATE = "1" ] then invalid_cmdline options \'-c\', \'-g\' and \'-s\' are mutual exclusive elif [ $SET = "1" -a $CREATE = "1" ] then invalid_cmdline options \'-c\', \'-g\' and \'-s\' are mutual exclusive fi LOG_ERROR=${_ERROR:-${_ALL:-0}} LOG_TIMEOUT=${_TIMEOUT:-${_ALL:-0}} LOG_SCAN=${_SCAN:-${_ALL:-0}} LOG_MLQUEUE=${_MLQUEUE:-${_ML:-${_ALL:-0}}} LOG_MLCOMPLETE=${_MLCOMPLETE:-${_ML:-${_ALL:-0}}} LOG_LLQUEUE=${_LLQUEUE:-${_LL:-${_ALL:-0}}} LOG_LLCOMPLETE=${_LLCOMPLETE:-${_LL:-${_ALL:-0}}} LOG_HLQUEUE=${_HLQUEUE:-${_HL:-${_ALL:-0}}} LOG_HLCOMPLETE=${_HLCOMPLETE:-${_HL:-${_ALL:-0}}} LOG_IOCTL=${_IOCTL:-${_ALL:-0}} } invalid_cmdline() { echo "$SCRIPTNAME: $*" echo "$SCRIPTNAME: Try '$SCRIPTNAME --help' for more information." exit 1 } get_logging_level() { echo "Current scsi logging level:" # LEVEL=$(sysctl -n dev.scsi.logging_level) LEVEL=$(cat /proc/sys/dev/scsi/logging_level) if [ $? != 0 ] then echo "$SCRIPTNAME: could not read scsi logging level" \ "(kernel probably without SCSI_LOGGING support)" exit 1 fi } show_logging_level() { echo "/proc/sys/dev/scsi/logging_level = $LEVEL" LOG_ERROR=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_TIMEOUT=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_SCAN=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_MLQUEUE=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_MLCOMPLETE=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_LLQUEUE=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_LLCOMPLETE=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)) LOG_HLQUEUE=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)); LOG_HLCOMPLETE=$((LEVEL & 7)); LEVEL=$((LEVEL>>3)); LOG_IOCTL=$((LEVEL & 7)) echo "SCSI_LOG_ERROR=$LOG_ERROR" echo "SCSI_LOG_TIMEOUT=$LOG_TIMEOUT" echo "SCSI_LOG_SCAN=$LOG_SCAN" echo "SCSI_LOG_MLQUEUE=$LOG_MLQUEUE" echo "SCSI_LOG_MLCOMPLETE=$LOG_MLCOMPLETE" echo "SCSI_LOG_LLQUEUE=$LOG_LLQUEUE" echo "SCSI_LOG_LLCOMPLETE=$LOG_LLCOMPLETE" echo "SCSI_LOG_HLQUEUE=$LOG_HLQUEUE" echo "SCSI_LOG_HLCOMPLETE=$LOG_HLCOMPLETE" echo "SCSI_LOG_IOCTL=$LOG_IOCTL" } set_logging_level() { echo "New scsi logging level:" # sysctl -q -w dev.scsi.logging_level=$LEVEL echo $LEVEL > /proc/sys/dev/scsi/logging_level if [ $? != 0 ] then echo "$SCRIPTNAME: could not write scsi logging level $LEVEL" echo " kernel does not have SCSI_LOGGING support or needs superuser" exit 1 fi } create_logging_level() { LEVEL=$((LOG_IOCTL & 7)); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_HLCOMPLETE & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_HLQUEUE & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_LLCOMPLETE & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_LLQUEUE & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_MLCOMPLETE & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_MLQUEUE & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_SCAN & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_TIMEOUT & 7))); LEVEL=$((LEVEL<<3)) LEVEL=$((LEVEL|(LOG_ERROR & 7))) } check_cmdline "$@" if [ $SET = "1" ] then create_logging_level set_logging_level show_logging_level elif [ $GET = "1" ] then get_logging_level show_logging_level elif [ $CREATE = "1" ] then create_logging_level show_logging_level else invalid_cmdline missing option \'-g\', \'-s\' or \'-c\' fi