diff options
Diffstat (limited to 'source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh')
| -rw-r--r-- | source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh | 558 |
1 files changed, 558 insertions, 0 deletions
diff --git a/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh b/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh new file mode 100644 index 000000000..4378e208a --- /dev/null +++ b/source/a/sysvinit-scripts/scripts/rescan-scsi-bus.sh @@ -0,0 +1,558 @@ +#!/bin/bash +# Skript to rescan SCSI bus, using the +# scsi add-single-device mechanism +# (c) 1998--2008 Kurt Garloff <kurt@garloff.de>, GNU GPL v2 or later +# (c) 2006--2008 Hannes Reinecke, GNU GPL v2 or later +# $Id: rescan-scsi-bus.sh,v 1.29 2008/10/29 10:03:04 garloff Exp $ + +setcolor () +{ + red="\e[0;31m" + green="\e[0;32m" + yellow="\e[0;33m" + bold="\e[0;1m" + norm="\e[0;0m" +} + +unsetcolor () +{ + red=""; green="" + yellow=""; norm="" +} + +# Return hosts. sysfs must be mounted +findhosts_26 () +{ + hosts= + if ! ls /sys/class/scsi_host/host* >/dev/null 2>&1; then + echo "No SCSI host adapters found in sysfs" + exit 1; + fi + for hostdir in /sys/class/scsi_host/host*; do + hostno=${hostdir#/sys/class/scsi_host/host} + if [ -f $hostdir/isp_name ] ; then + hostname="qla2xxx" + elif [ -f $hostdir/lpfc_drvr_version ] ; then + hostname="lpfc" + else + hostname=`cat $hostdir/proc_name` + fi + hosts="$hosts $hostno" + echo "Host adapter $hostno ($hostname) found." + done + hosts=`echo $hosts | sed 's/ /\n/g' | sort -n` +} + +# Return hosts. /proc/scsi/HOSTADAPTER/? must exist +findhosts () +{ + hosts= + for driverdir in /proc/scsi/*; do + driver=${driverdir#/proc/scsi/} + if test $driver = scsi -o $driver = sg -o $driver = dummy -o $driver = device_info; then continue; fi + for hostdir in $driverdir/*; do + name=${hostdir#/proc/scsi/*/} + if test $name = add_map -o $name = map -o $name = mod_parm; then continue; fi + num=$name + driverinfo=$driver + if test -r $hostdir/status; then + num=$(printf '%d\n' `sed -n 's/SCSI host number://p' $hostdir/status`) + driverinfo="$driver:$name" + fi + hosts="$hosts $num" + echo "Host adapter $num ($driverinfo) found." + done + done +} + +# Get /proc/scsi/scsi info for device $host:$channel:$id:$lun +# Optional parameter: Number of lines after first (default = 2), +# result in SCSISTR, return code 1 means empty. +procscsiscsi () +{ + if test -z "$1"; then LN=2; else LN=$1; fi + CHANNEL=`printf "%02i" $channel` + ID=`printf "%02i" $id` + LUN=`printf "%02i" $lun` + if [ -d /sys/class/scsi_device ]; then + SCSIPATH="/sys/class/scsi_device/${host}:${channel}:${id}:${lun}" + if [ -d "$SCSIPATH" ] ; then + SCSISTR="Host: scsi${host} Channel: $CHANNEL Id: $ID Lun: $LUN" + if [ "$LN" -gt 0 ] ; then + IVEND=$(cat ${SCSIPATH}/device/vendor) + IPROD=$(cat ${SCSIPATH}/device/model) + IPREV=$(cat ${SCSIPATH}/device/rev) + SCSIDEV=$(printf ' Vendor: %-08s Model: %-16s Rev: %-4s' "$IVEND" "$IPROD" "$IPREV") + SCSISTR="$SCSISTR +$SCSIDEV" + fi + if [ "$LN" -gt 1 ] ; then + ILVL=$(cat ${SCSIPATH}/device/scsi_level) + type=$(cat ${SCSIPATH}/device/type) + case "$type" in + 0) ITYPE="Direct-Access " ;; + 1) ITYPE="Sequential-Access" ;; + 2) ITYPE="Printer " ;; + 3) ITYPE="Processor " ;; + 4) ITYPE="WORM " ;; + 5) ITYPE="CD-ROM " ;; + 6) ITYPE="Scanner " ;; + 7) ITYPE="Optical Device " ;; + 8) ITYPE="Medium Changer " ;; + 9) ITYPE="Communications " ;; + 10) ITYPE="Unknown " ;; + 11) ITYPE="Unknown " ;; + 12) ITYPE="RAID " ;; + 13) ITYPE="Enclosure " ;; + 14) ITYPE="Direct-Access-RBC" ;; + *) ITYPE="Unknown " ;; + esac + SCSITMP=$(printf ' Type: %-16s ANSI SCSI revision: %02d' "$ITYPE" "$((ILVL - 1))") + SCSISTR="$SCSISTR +$SCSITMP" + fi + + else + return 1 + fi + else + grepstr="scsi$host Channel: $CHANNEL Id: $ID Lun: $LUN" + SCSISTR=`cat /proc/scsi/scsi | grep -A$LN -e"$grepstr"` + fi + if test -z "$SCSISTR"; then return 1; else return 0; fi +} + +# Find sg device with 2.6 sysfs support +sgdevice26 () +{ + if test -e /sys/class/scsi_device/$host\:$channel\:$id\:$lun/device/generic; then + SGDEV=`readlink /sys/class/scsi_device/$host\:$channel\:$id\:$lun/device/generic` + SGDEV=`basename $SGDEV` + else + for SGDEV in /sys/class/scsi_generic/sg*; do + DEV=`readlink $SGDEV/device` + if test "${DEV##*/}" = "$host:$channel:$id:$lun"; then + SGDEV=`basename $SGDEV`; return + fi + done + SGDEV="" + fi +} + +# Find sg device with 2.4 report-devs extensions +sgdevice24 () +{ + if procscsiscsi 3; then + SGDEV=`echo "$SCSISTR" | grep 'Attached drivers:' | sed 's/^ *Attached drivers: \(sg[0-9]*\).*/\1/'` + fi +} + +# Find sg device that belongs to SCSI device $host $channel $id $lun +sgdevice () +{ + SGDEV= + if test -d /sys/class/scsi_device; then + sgdevice26 + else + DRV=`grep 'Attached drivers:' /proc/scsi/scsi 2>/dev/null` + repdevstat=$((1-$?)) + if [ $repdevstat = 0 ]; then + echo "scsi report-devs 1" >/proc/scsi/scsi + DRV=`grep 'Attached drivers:' /proc/scsi/scsi 2>/dev/null` + if [ $? = 1 ]; then return; fi + fi + if ! `echo $DRV | grep 'drivers: sg' >/dev/null`; then + modprobe sg + fi + sgdevice24 + if [ $repdevstat = 0 ]; then + echo "scsi report-devs 0" >/proc/scsi/scsi + fi + fi +} + +# Test if SCSI device is still responding to commands +testonline () +{ + : testonline + if test ! -x /usr/bin/sg_turs; then return 0; fi + sgdevice + if test -z "$SGDEV"; then return 0; fi + sg_turs /dev/$SGDEV >/dev/null 2>&1 + RC=$? + # echo -e "\e[A\e[A\e[A${yellow}Test existence of $SGDEV = $RC ${norm} \n\n\n" + if test $RC = 1; then return $RC; fi + # OK, device online, compare INQUIRY string + INQ=`sg_inq $sg_len_arg /dev/$SGDEV` + IVEND=`echo "$INQ" | grep 'Vendor identification:' | sed 's/^[^:]*: \(.*\)$/\1/'` + IPROD=`echo "$INQ" | grep 'Product identification:' | sed 's/^[^:]*: \(.*\)$/\1/'` + IPREV=`echo "$INQ" | grep 'Product revision level:' | sed 's/^[^:]*: \(.*\)$/\1/'` + STR=`printf " Vendor: %-08s Model: %-16s Rev: %-4s" "$IVEND" "$IPROD" "$IPREV"` + IPTYPE=`echo "$INQ" | sed -n 's/.* Device_type=\([0-9]*\) .*/\1/p'` + IPQUAL=`echo "$INQ" | sed -n 's/ *PQual=\([0-9]*\) Device.*/\1/p'` + if [ "$IPQUAL" != 0 ] ; then + echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}\nLU not available (PQual $IPQUAL)${norm}\n\n\n" + return 1 + fi + + procscsiscsi + TMPSTR=`echo "$SCSISTR" | grep 'Vendor:'` + if [ "$TMPSTR" != "$STR" ]; then + echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}\nfrom:${TMPSTR#* } \nto: $STR ${norm}\n\n\n" + return 1 + fi + TMPSTR=`echo "$SCSISTR" | sed -n 's/.*Type: *\(.*\) *ANSI.*/\1/p'` + if [ $TMPSTR != $TYPE ] ; then + echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}\nfrom:${TMPSTR} \nto: $TYPE ${norm}\n\n\n" + return 1 + fi + return $RC +} + +# Test if SCSI device $host $channen $id $lun exists +# Outputs description from /proc/scsi/scsi, returns SCSISTR +testexist () +{ + : testexist + SCSISTR= + if procscsiscsi; then + echo "$SCSISTR" | head -n1 + echo "$SCSISTR" | tail -n2 | pr -o4 -l1 + fi +} + +# Returns the list of existing channels per host +chanlist () +{ + local hcil + local cil + local chan + local tmpchan + + for dev in /sys/class/scsi_device/${host}:* ; do + hcil=${dev##*/} + cil=${hcil#*:} + chan=${cil%%:*} + for tmpchan in $channelsearch ; do + if test "$chan" -eq $tmpchan ; then + chan= + fi + done + if test -n "$chan" ; then + channelsearch="$channelsearch $chan" + fi + done +} + +# Returns the list of existing targets per host +idlist () +{ + local hcil + local cil + local il + local target + local tmpid + + for dev in /sys/class/scsi_device/${host}:${channel}:* ; do + hcil=${dev##*/} + cil=${hcil#*:} + il=${cil#*:} + target=${il%%:*} + for tmpid in $idsearch ; do + if test "$target" -eq $tmpid ; then + target= + fi + done + if test -n "$target" ; then + idsearch="$idsearch $target" + fi + done +} + +# Returns the list of existing LUNs +getluns () +{ + if test ! -x /usr/bin/sg_luns; then return; fi + sgdevice + if test -z "$SGDEV"; then return; fi + sg_luns -d /dev/$SGDEV | sed -n 's/.*lun=\(.*\)/\1/p' +} + +# Perform scan on a single lun +dolunscan() +{ + SCSISTR= + devnr="$host $channel $id $lun" + echo "Scanning for device $devnr ..." + printf "${yellow}OLD: $norm" + testexist + : f $remove s $SCSISTR + if test "$remove" -a "$SCSISTR"; then + # Device exists: Test whether it's still online + # (testonline returns 1 if it's gone or has changed) + testonline + if test $? = 1 -o ! -z "$forceremove"; then + echo -en "\r\e[A\e[A\e[A${red}REM: " + echo "$SCSISTR" | head -n1 + echo -e "${norm}\e[B\e[B" + if test -e /sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device; then + echo 1 > /sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device/delete + # Try reading, should fail if device is gone + echo "$channel $id $lun" > /sys/class/scsi_host/host${host}/scan + else + echo "scsi remove-single-device $devnr" > /proc/scsi/scsi + # Try reading, should fail if device is gone + echo "scsi add-single-device $devnr" > /proc/scsi/scsi + fi + fi + if test $RC = 0 ; then + if test -e /sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device; then + echo 1 > /sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device/rescan + fi + fi + + printf "\r\x1b[A\x1b[A\x1b[A${yellow}OLD: $norm" + testexist + if test -z "$SCSISTR"; then + printf "\r${red}DEL: $norm\r\n\n" + let rmvd+=1; + fi + fi + if test -z "$SCSISTR"; then + # Device does not exist, try to add + printf "\r${green}NEW: $norm" + if test -e /sys/class/scsi_host/host${host}/scan; then + echo "$channel $id $lun" > /sys/class/scsi_host/host${host}/scan 2> /dev/null + else + echo "scsi add-single-device $devnr" > /proc/scsi/scsi + fi + testexist + if test -z "$SCSISTR"; then + # Device not present + printf "\r\x1b[A"; + # Optimization: if lun==0, stop here (only if in non-remove mode) + if test $lun = 0 -a -z "$remove" -a $optscan = 1; then + break; + fi + else + let found+=1; + fi + fi +} + +# Perform report lun scan +doreportlun() +{ + lun=0 + SCSISTR= + devnr="$host $channel $id $lun" + echo "Scanning for device $devnr ..." + printf "${yellow}OLD: $norm" + testexist + if test -z "$SCSISTR"; then + # Device does not exist, try to add + printf "\r${green}NEW: $norm" + if test -e /sys/class/scsi_host/host${host}/scan; then + echo "$channel $id $lun" > /sys/class/scsi_host/host${host}/scan 2> /dev/null + else + echo "scsi add-single-device $devnr" > /proc/scsi/scsi + fi + testexist + if test -z "$SCSISTR"; then + # Device not present + printf "\r\x1b[A"; + lunsearch= + return + fi + fi + lunsearch=`getluns` + lunremove= + # Check existing luns + for dev in /sys/class/scsi_device/$host\:$channel\:$id\:*; do + lun=${dev##*:} + newsearch= + oldsearch="$lunsearch" + for tmplun in $lunsearch; do + if test $tmplun -eq $lun ; then + # Optimization: don't scan lun 0 again + if [ $lun -ne 0 ]; then + dolunscan + fi + else + newsearch="$newsearch $tmplun" + fi + done + if [ "${#oldsearch}" = "${#newsearch}" ] ; then + # Stale lun + lunremove="$lunremove $lun" + fi + lunsearch="$newsearch" + done + # Add new ones and check stale ones + for lun in $lunsearch $lunremove; do + dolunscan + done +} + +# Perform search (scan $host) +dosearch () +{ + if test -z "$channelsearch" ; then + chanlist + fi + for channel in $channelsearch; do + if test -z "$idsearch" ; then + idlist + fi + for id in $idsearch; do + if test -z "$lunsearch"; then + doreportlun + else + for lun in $lunsearch; do + dolunscan + done + fi + done + done +} + +# main +if test @$1 = @--help -o @$1 = @-h -o @$1 = @-?; then + echo "Usage: rescan-scsi-bus.sh [options] [host [host ...]]" + echo "Options:" + echo " -l activates scanning for LUNs 0-7 [default: 0]" + echo " -L NUM activates scanning for LUNs 0--NUM [default: 0]" + echo " -w scan for target device IDs 0 .. 15 [default: 0-7]" + echo " -c enables scanning of channels 0 1 [default: 0]" + echo " -r enables removing of devices [default: disabled]" + echo " -i issue a FibreChannel LIP reset [default: disabled]" + echo "--remove: same as -r" + echo "--issue-lip: same as -i" + echo "--forceremove: Remove and readd every device (DANGEROUS)" + echo "--nooptscan: don't stop looking for LUNs is 0 is not found" + echo "--color: use coloured prefixes OLD/NEW/DEL" + echo "--hosts=LIST: Scan only host(s) in LIST" + echo "--channels=LIST: Scan only channel(s) in LIST" + echo "--ids=LIST: Scan only target ID(s) in LIST" + echo "--luns=LIST: Scan only lun(s) in LIST" + echo " Host numbers may thus be specified either directly on cmd line (deprecated) or" + echo " or with the --hosts=LIST parameter (recommended)." + echo "LIST: A[-B][,C[-D]]... is a comma separated list of single values and ranges" + echo " (No spaces allowed.)" + exit 0 +fi + +expandlist () +{ + list=$1 + result="" + first=${list%%,*} + rest=${list#*,} + while test ! -z "$first"; do + beg=${first%%-*}; + if test "$beg" = "$first"; then + result="$result $beg"; + else + end=${first#*-} + result="$result `seq $beg $end`" + fi + test "$rest" = "$first" && rest="" + first=${rest%%,*} + rest=${rest#*,} + done + echo $result +} + +if test ! -d /sys/class/scsi_host/ -a ! -d /proc/scsi/; then + echo "Error: SCSI subsystem not active" + exit 1 +fi + +# Make sure sg is there +modprobe sg >/dev/null 2>&1 + +sg_version=$(sg_inq -V 2>&1 | cut -d " " -f 3) +sg_version=${sg_version##0.} +if [ "$sg_version" -lt 70 ] ; then + sg_len_arg="-36" +else + sg_len_arg="--len=36" +fi + +# defaults +unsetcolor +lunsearch="" +idsearch=`seq 0 7` +channelsearch="0" +remove= +forceremove= +optscan=1 +if test -d /sys/class/scsi_host; then + findhosts_26 +else + findhosts +fi + +# Scan options +opt="$1" +while test ! -z "$opt" -a -z "${opt##-*}"; do + opt=${opt#-} + case "$opt" in + l) lunsearch=`seq 0 7` ;; + L) lunsearch=`seq 0 $2`; shift ;; + w) idsearch=`seq 0 15` ;; + c) channelsearch="0 1" ;; + r) remove=1 ;; + i) lipreset=1 ;; + -remove) remove=1 ;; + -forceremove) remove=1; forceremove=1 ;; + -hosts=*) arg=${opt#-hosts=}; hosts=`expandlist $arg` ;; + -channels=*) arg=${opt#-channels=};channelsearch=`expandlist $arg` ;; + -ids=*) arg=${opt#-ids=}; idsearch=`expandlist $arg` ;; + -luns=*) arg=${opt#-luns=}; lunsearch=`expandlist $arg` ;; + -color) setcolor ;; + -nooptscan) optscan=0 ;; + -issue-lip) lipreset=1 ;; + *) echo "Unknown option -$opt !" ;; + esac + shift + opt="$1" +done + +# Hosts given ? +if test "@$1" != "@"; then + hosts=$*; +fi + +echo "Scanning SCSI subsystem for new devices" +test -z "$remove" || echo " and remove devices that have disappeared" +declare -i found=0 +declare -i rmvd=0 +for host in $hosts; do + echo -n "Scanning host $host " + if test -e /sys/class/fc_host/host$host ; then + # It's pointless to do a target scan on FC + if test -n "$lipreset" ; then + echo 1 > /sys/class/fc_host/host$host/issue_lip 2> /dev/null; + echo "- - -" > /sys/class/scsi_host/host$host/scan 2> /dev/null; + fi + channelsearch="" + idsearch="" + fi + [ -n "$channelsearch" ] && echo -n "channels $channelsearch " + echo -n "for " + if [ -n "$idsearch" ] ; then + echo -n " SCSI target IDs " $idsearch + else + echo -n " all SCSI target IDs" + fi + if [ -n "$lunsearch" ] ; then + echo ", LUNs " $lunsearch + else + echo ", all LUNs" + fi + dosearch; +done +echo "$found new device(s) found. " +echo "$rmvd device(s) removed. " + |