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-rwxr-xr-xscripts/rescan-scsi-bus.sh1436
1 files changed, 1436 insertions, 0 deletions
diff --git a/scripts/rescan-scsi-bus.sh b/scripts/rescan-scsi-bus.sh
new file mode 100755
index 00000000..1ebc0e91
--- /dev/null
+++ b/scripts/rescan-scsi-bus.sh
@@ -0,0 +1,1436 @@
+#!/bin/bash
+# Script to rescan SCSI bus, using the scsi add-single-device mechanism.
+# (c) 1998--2010 Kurt Garloff <kurt@garloff.de>, GNU GPL v2 or v3
+# (c) 2006--2022 Hannes Reinecke, GNU GPL v2 or later
+# $Id: rescan-scsi-bus.sh,v 1.57 2012/03/31 14:08:48 garloff Exp $
+
+VERSION="20220930"
+SCAN_WILD_CARD=4294967295
+
+TMPLUNINFOFILE="/tmp/rescan-scsi-mpath-info.txt"
+
+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=""
+}
+
+echo_debug()
+{
+ if [ "$debug" -eq 1 ] ; then
+ echo "$1"
+ fi
+}
+
+# Output some text and return cursor to previous position
+# (only works for simple strings)
+# Stores length of string in LN and returns it
+print_and_scroll_back ()
+{
+ STRG="$1"
+ LN=${#STRG}
+ BK=""
+ declare -i cntr=0
+ while [ $cntr -lt "$LN" ] ; do BK="$BK\e[D"; let cntr+=1; done
+ echo -en "$STRG$BK"
+ return "$LN"
+}
+
+# Overwrite a text of length $LN with whitespace
+white_out ()
+{
+ BK=""; WH=""
+ declare -i cntr=0
+ while [ $cntr -lt "$LN" ] ; do BK="$BK\e[D"; WH="$WH "; let cntr+=1; done
+ echo -en "$WH$BK"
+}
+
+# Return hosts. sysfs must be mounted
+findhosts_26 ()
+{
+ hosts=
+ for hostdir in /sys/class/scsi_host/host* ; do
+ [ -e "$hostdir" ] || continue
+ hostno=${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_debug "Host adapter $hostno ($hostname) found."
+ done
+ if [ -z "$hosts" ] ; then
+ echo "No SCSI host adapters found in sysfs"
+ exit 1;
+ fi
+ # ensure numeric ordering. No quotes arount $hosts to skip leading space.
+ hosts=$(echo $hosts | tr ' ' '\n' | sort -n)
+}
+
+# Return hosts. /proc/scsi/HOSTADAPTER/? must exist
+findhosts ()
+{
+ hosts=
+ for driverdir in /proc/scsi/*; do
+ driver=${driverdir#/proc/scsi/}
+ if [ "$driver" = scsi ] || [ "$driver" = sg ] || [ "$driver" = dummy ] || [ "$driver" = device_info ] ; then continue; fi
+ for hostdir in $driverdir/*; do
+ name=${hostdir#/proc/scsi/*/}
+ if [ "$name" = add_map ] || [ "$name" = map ] || [ "$name" = mod_parm ] ; then continue; fi
+ num=$name
+ driverinfo=$driver
+ if [ -r "$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
+}
+
+printtype ()
+{
+ local type=$1
+
+ case "$type" in
+ 0) echo "Direct-Access" ;;
+ 1) echo "Sequential-Access" ;;
+ 2) echo "Printer" ;;
+ 3) echo "Processor" ;;
+ 4) echo "WORM" ;;
+ 5) echo "CD-ROM" ;;
+ 6) echo "Scanner" ;;
+ 7) echo "Optical-Device" ;;
+ 8) echo "Medium-Changer" ;;
+ 9) echo "Communications" ;;
+ 10) echo "Unknown" ;;
+ 11) echo "Unknown" ;;
+ 12) echo "RAID" ;;
+ 13) echo "Enclosure" ;;
+ 14) echo "Direct-Access-RBC" ;;
+ *) echo "Unknown" ;;
+ esac
+}
+
+print02i()
+{
+ if [ "$1" = "*" ] ; then
+ echo "00"
+ else
+ printf "%02i" "$1"
+ fi
+}
+
+# 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 [ -z "$1" ] ; then
+ LN=2
+ else
+ LN=$1
+ fi
+ CHANNEL=$(print02i "$channel")
+ ID=$(print02i "$id")
+ LUN=$(print02i "$lun")
+ if [ -d /sys/class/scsi_device ]; then
+ SCSIPATH="/sys/class/scsi_device/${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 "${SCSIPATH}/device/type")
+ ITYPE=$(printtype "$type")
+ SCSITMP=$(printf ' Type: %-17s ANSI SCSI revision: %02d' "$ITYPE" "$((ILVL - 1))")
+ SCSISTR="$SCSISTR
+$SCSITMP"
+ fi
+ else
+ return 1
+ fi
+ else
+ grepstr="scsi$host Channel: $CHANNEL Id: $ID Lun: $LUN"
+ SCSISTR=$(grep -A "$LN" -e "$grepstr" /proc/scsi/scsi)
+ fi
+ if [ -z "$SCSISTR" ] ; then
+ return 1
+ else
+ return 0
+ fi
+}
+
+# Find sg device with 2.6 sysfs support
+sgdevice26 ()
+{
+ local gendev
+
+ # if the scsi device has not been added, then there would not
+ # a related sgdev. So it's pointless to scan all sgs to find
+ # a related sg.
+ scsidev=/sys/class/scsi_device/${host}:${channel}:${id}:${lun}
+ if [ ! -e "$scsidev" ]; then
+ SGDEV=""
+ return
+ fi
+
+ gendev=/sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device/generic
+ if [ -e "$gendev" ] ; then
+ SGDEV=$(basename "$(readlink "$gendev")")
+ return
+ fi
+ SGDEV=""
+}
+
+# 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 $lun
+# and return in SGDEV
+sgdevice ()
+{
+ SGDEV=
+ if [ -d /sys/class/scsi_device ] ; then
+ sgdevice26
+ else
+ DRV=$(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)
+ [ $? -eq 1 ] && return
+ fi
+ if ! echo "$DRV" | grep -q 'drivers: sg'; then
+ modprobe sg
+ fi
+ sgdevice24
+ if [ $repdevstat = 0 ]; then
+ echo "scsi report-devs 0" >/proc/scsi/scsi
+ fi
+ fi
+}
+
+# Whether or not the RMB (removable) bit has been set in the INQUIRY response.
+# Uses ${host}, ${channel}, ${id} and ${lun}. Assumes that sg_device() has
+# already been called. How to test this function: copy/paste this function
+# in a shell and run
+# (cd /sys/class/scsi_device && for d in *; do set ${d//:/ }; echo -n "$d $(</sys/class/scsi_device/${d}/device/block/*/removable) <> "; SGDEV=bsg/$d host=$1 channel=$2 id=$3 lun=$4 is_removable; done)
+is_removable ()
+{
+ local b p
+
+ p=/sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device/inquiry
+ # Extract the second byte of the INQUIRY response and check bit 7 (mask 0x80).
+ b=$(hexdump -n1 -e '/1 "%02X"' "$p" 2>/dev/null)
+ if [ -n "$b" ]; then
+ echo $(((0x$b & 0x80) != 0))
+ else
+ sg_inq /dev/$SGDEV 2>/dev/null | sed -n 's/^.*RMB=\([0-9]*\).*$/\1/p'
+ fi
+}
+
+# Test if SCSI device is still responding to commands
+# Return values:
+# 0 device is present
+# 1 device has changed
+# 2 device has been removed
+testonline ()
+{
+ local ctr RC RMB
+
+ : testonline
+ ctr=0
+ RC=0
+ # Set default values
+ IPTYPE=31
+ IPQUAL=3
+ [ ! -x /usr/bin/sg_turs ] && return 0
+ sgdevice
+ [ -z "$SGDEV" ] && return 0
+ sg_turs /dev/$SGDEV >/dev/null 2>&1
+ RC=$?
+
+ # Handle in progress of becoming ready and unit attention
+ while [ $RC = 2 -o $RC = 6 ] && [ $ctr -lt $timeout ] ; do
+ if [ $RC = 2 ] && [ "$RMB" != "1" ] && sg_inq /dev/$SGDEV | grep -q -i "PQual=0" ; then
+ echo -n "."
+ let LN+=1
+ sleep 1
+ else
+ sleep 0.02
+ fi
+ let ctr+=1
+ sg_turs /dev/$SGDEV >/dev/null 2>&1
+ RC=$?
+ # Check for removable device; TEST UNIT READY obviously will
+ # fail for a removable device with no medium
+ RMB=$(is_removable)
+ print_and_scroll_back "$host:$channel:$id:$lun $SGDEV ($RMB) "
+ [ $RC = 2 ] && [ "$RMB" = "1" ] && break
+ done
+ if [ $ctr != 0 ] ; then
+ white_out
+ fi
+ # echo -e "\e[A\e[A\e[A${yellow}Test existence of $SGDEV = $RC ${norm} \n\n\n"
+ [ $RC = 1 ] && return $RC
+ # Reset RC (might be !=0 for passive paths)
+ RC=0
+ # OK, device online, compare INQUIRY string
+ INQ=$(sg_inq "$sg_len_arg" /dev/$SGDEV 2>/dev/null)
+ if [ -z "$INQ" ] ; then
+ echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}INQUIRY failed${norm} \n\n\n"
+ return 2
+ fi
+ 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')
+ if [ -z "$IPTYPE" ]; then
+ IPTYPE=$(echo "$INQ" | sed -n 's/.* PDT=\([0-9]*\) .*/\1/p')
+ fi
+ IPQUAL=$(echo "$INQ" | sed -n 's/ *PQual=\([0-9]*\) Device.*/\1/p')
+ if [ -z "$IPQUAL" ] ; then
+ IPQUAL=$(echo "$INQ" | sed -n 's/ *PQual=\([0-9]*\) PDT.*/\1/p')
+ fi
+ if [ "$IPQUAL" != 0 ] ; then
+ [ -z "$IPQUAL" ] && IPQUAL=3
+ [ -z "$IPTYPE" ] && IPTYPE=31
+ echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}LU not available (PQual $IPQUAL)${norm} \n\n\n"
+ return 2
+ fi
+
+ TYPE=$(printtype $IPTYPE)
+ if ! procscsiscsi ; then
+ echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV removed. ${norm}\n\n\n"
+ return 2
+ fi
+ TMPSTR=$(echo "$SCSISTR" | grep 'Vendor:')
+ if [ "$ignore_rev" -eq 0 ] ; then
+ if [ "$TMPSTR" != "$STR" ]; then
+ echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}\nfrom:${SCSISTR#* } \nto: $STR ${norm} \n\n\n"
+ return 1
+ fi
+ else
+ # Ignore disk revision change
+ local old_str_no_rev=
+ local new_str_no_rev=
+
+ old_str_no_rev=${TMPSTR%Rev:*}
+ new_str_no_rev=${STR%Rev:*}
+ if [ "$old_str_no_rev" != "$new_str_no_rev" ]; then
+ echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}\nfrom:${SCSISTR#* } \nto: $STR ${norm} \n\n\n"
+ return 1
+ fi
+ fi
+ TMPSTR=$(echo "$SCSISTR" | sed -n 's/.*Type: *\(.*\) *ANSI.*/\1/p' | sed 's/ *$//g')
+ if [ "$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 $channel $id $lun exists
+# Outputs description from /proc/scsi/scsi (unless arg passed)
+# Returns SCSISTR (empty if no dev)
+testexist ()
+{
+ : testexist
+ SCSISTR=
+ if procscsiscsi && [ -z "$1" ] ; then
+ echo "$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
+ [ -d "$dev" ] || continue;
+ hcil=${dev##*/}
+ cil=${hcil#*:}
+ chan=${cil%%:*}
+ for tmpchan in $channelsearch ; do
+ if [ "$chan" -eq "$tmpchan" ] ; then
+ chan=
+ fi
+ done
+ if [ -n "$chan" ] ; then
+ channelsearch="$channelsearch $chan"
+ fi
+ done
+ if [ -z "$channelsearch" ] ; then
+ channelsearch="0"
+ fi
+}
+
+# Returns the list of existing targets per host
+idlist ()
+{
+ local tmpid
+ local newid
+ local oldid
+
+ oldlist=$(find /sys/class/scsi_device -name "${host}:${channel}:*" -printf "%f\n")
+ # Rescan LUN 0 to check if we found new targets
+ echo "${channel} - -" > "/sys/class/scsi_host/host${host}/scan"
+ newlist=$(find /sys/class/scsi_device -name "${host}:${channel}:*" -printf "%f\n")
+ for newid in $newlist ; do
+ oldid=$newid
+ for tmpid in $oldlist ; do
+ if [ "$newid" = "$tmpid" ] ; then
+ oldid=
+ break
+ fi
+ done
+ if [ -n "$oldid" ] ; then
+ if [ -d /sys/class/scsi_device/$oldid ] ; then
+ hcil=${oldid}
+ printf "\r${green}NEW: %s ${norm}"
+ testexist
+ if [ "$SCSISTR" ] ; then
+ incrfound "$hcil"
+ fi
+ fi
+ fi
+ done
+ idsearch=$(find /sys/bus/scsi/devices -name "target${host}:${channel}:*" -printf "%f\n" | cut -f 3 -d :)
+}
+
+# Returns the list of existing LUNs from device $host $channel $id $lun
+# and returns list to stdout
+getluns()
+{
+ sgdevice
+ [ -z "$SGDEV" ] && return 1
+ if [ ! -x /usr/bin/sg_luns ] ; then
+ echo 0
+ return 1
+ fi
+ LLUN=$(sg_luns /dev/$SGDEV 2>/dev/null | sed -n 's/ \(.*\)/\1/p')
+ # Added -z $LLUN condition because $? gets the RC from sed, not sg_luns
+ if [ $? -ne 0 ] || [ -z "$LLUN" ] ; then
+ echo 0
+ return 1
+ fi
+ for lun in $LLUN ; do
+ # Swap LUN number
+ l0=0x$lun
+ l1=$(( (l0 >> 48) & 0xffff ))
+ l2=$(( (l0 >> 32) & 0xffff ))
+ l3=$(( (l0 >> 16) & 0xffff ))
+ l4=$(( l0 & 0xffff ))
+ l0=$(( ( ( (l4 * 0xffff) + l3 ) * 0xffff + l2 ) * 0xffff + l1 ))
+ printf "%u\n" $l0
+ done
+ return 0
+}
+
+# Wait for udev to settle (create device nodes etc.)
+udevadm_settle()
+{
+ local tmo=60
+ if [ -x /sbin/udevadm ] ; then
+ print_and_scroll_back " Calling udevadm settle (can take a while) "
+ # Loop for up to 60 seconds if sd devices still are settling..
+ # This allows us to continue if udev events are stuck on multipaths in recovery mode
+ while [ $tmo -gt 0 ] ; do
+ if ! /sbin/udevadm settle --timeout=1 | egrep -q sd[a-z]+ ; then
+ break;
+ fi
+ let tmo=$tmo-1
+ done
+ white_out
+ elif [ -x /sbin/udevsettle ] ; then
+ print_and_scroll_back " Calling udevsettle (can take a while) "
+ /sbin/udevsettle
+ white_out
+ else
+ sleep 0.02
+ fi
+}
+
+# Perform scan on a single lun $host $channel $id $lun
+dolunscan()
+{
+ local remappedlun0=
+ local devpath
+ SCSISTR=
+ devnr="$host $channel $id $lun"
+ echo -e " Scanning for device $devnr ... "
+ printf "${yellow}OLD: %s ${norm}"
+ testexist
+ # Device exists: Test whether it's still online
+ # (testonline returns 2 if it's gone and 1 if it has changed)
+ devpath="/sys/class/scsi_device/${host}:${channel}:${id}:${lun}/device"
+ if [ "$SCSISTR" ] ; then
+ testonline
+ RC=$?
+ # Well known lun transition case. Only for Direct-Access devs (type 0)
+ # If block directory exists && and PQUAL != 0, we unmapped lun0 and just have a well-known lun
+ # If block directory doesn't exist && PQUAL == 0, we mapped a real lun0
+ if [ "$lun" -eq 0 ] && [ $IPTYPE -eq 0 ] ; then
+ if [ $RC = 2 ] ; then
+ if [ -e "$devpath" ] ; then
+ if [ -d "$devpath/block" ] ; then
+ remappedlun0=2 # Transition from real lun 0 to well-known
+ else
+ RC=0 # Set this so the system leaves the existing well known lun alone. This is a lun 0 with no block directory
+ fi
+ fi
+ elif [ $RC = 0 ] && [ $IPTYPE -eq 0 ] ; then
+ if [ -e "$devpath" ] ; then
+ if [ ! -d "$devpath/block" ] ; then
+ remappedlun0=1 # Transition from well-known to real lun 0
+ fi
+ fi
+ fi
+ fi
+ fi
+
+ # Special case: lun 0 just got added (for reportlunscan),
+ # so make sure we correctly treat it as new
+ if [ "$lun" = "0" ] && [ "$1" = "1" ] && [ -z "$remappedlun0" ] ; then
+ SCSISTR=""
+ printf "\r\e[A\e[A\e[A"
+ fi
+
+ : f "$remove" s $SCSISTR
+ if [ "$remove" ] && [ "$SCSISTR" -o "$remappedlun0" = "1" ] ; then
+ if [ $RC != 0 ] || [ ! -z "$forceremove" ] || [ -n "$remappedlun0" ] ; then
+ if [ "$remappedlun0" != "1" ] ; then
+ echo -en "\r\e[A\e[A\e[A${red}REM: "
+ echo "$SCSISTR" | head -n1
+ echo -e "${norm}\e[B\e[B"
+ fi
+ if [ -e "$devpath" ] ; then
+ # have to preemptively do this so we can figure out the mpath device
+ # Don't do this if we're deleting a well known lun to replace it
+ if [ "$remappedlun0" != "1" ] ; then
+ incrrmvd "$host:$channel:$id:$lun"
+ fi
+ echo 1 > "$devpath/delete"
+ sleep 0.02
+ else
+ echo "scsi remove-single-device $devnr" > /proc/scsi/scsi
+ if [ $RC -eq 1 ] || [ "$lun" -eq 0 ] ; then
+ # Try readding, should fail if device is gone
+ echo "scsi add-single-device $devnr" > /proc/scsi/scsi
+ fi
+ fi
+ fi
+ if [ $RC = 0 ] || [ "$forcerescan" ] ; then
+ if [ -e "$devpath" ] ; then
+ echo 1 > "$devpath/rescan"
+ fi
+ fi
+ printf "\r\e[A\e[A\e[A${yellow}OLD: %s ${norm}"
+ testexist
+ if [ -z "$SCSISTR" ] && [ $RC != 1 ] && [ "$remappedlun0" != "1" ] ; then
+ printf "\r${red}DEL: %s\r\n\n ${norm}"
+ # In the event we're replacing with a well known node, we need to let it continue, to create the replacement node
+ [ "$remappedlun0" != "2" ] && return 2
+ fi
+ fi
+ if [ -z "$SCSISTR" ] || [ -n "$remappedlun0" ] ; then
+ if [ "$remappedlun0" != "2" ] ; then
+ # Device does not exist, try to add
+ printf "\r${green}NEW: %s ${norm}"
+ fi
+ if [ -e "/sys/class/scsi_host/host${host}/scan" ] ; then
+ echo "$channel $id $lun" > "/sys/class/scsi_host/host${host}/scan" 2> /dev/null
+ else
+ echo "scsi add-single-device $devnr" > /proc/scsi/scsi
+ fi
+ testexist
+ if [ -z "$SCSISTR" ] ; then
+ # Device not present
+ printf "\r\e[A";
+ # Optimization: if lun==0, stop here (only if in non-remove mode)
+ if [ "$lun" = 0 ] && [ -z "$remove" ] && [ "$optscan" = 1 ] ; then
+ return 1;
+ fi
+ else
+ if [ "$remappedlun0" != "2" ] ; then
+ incrfound "$host:$channel:$id:$lun"
+ fi
+ fi
+ fi
+ return 0;
+}
+
+# Perform report lun scan on $host $channel $id using REPORT_LUNS
+doreportlun()
+{
+ lun=0
+ SCSISTR=
+ devnr="$host $channel $id $lun"
+ echo -en " Scanning for device $devnr ...\r"
+ lun0added=
+ #printf "${yellow}OLD: %s ${norm}"
+ # Phase one: If LUN0 does not exist, try to add
+ testexist -q
+ if [ -z "$SCSISTR" ] ; then
+ # Device does not exist, try to add
+ #printf "\r${green}NEW: %s ${norm}"
+ if [ -e "/sys/class/scsi_host/host${host}/scan" ] ; then
+ echo "$channel $id $lun" > "/sys/class/scsi_host/host${host}/scan" 2> /dev/null
+ udevadm_settle
+ else
+ echo "scsi add-single-device $devnr" > /proc/scsi/scsi
+ fi
+ testexist -q
+ if [ -n "$SCSISTR" ] ; then
+ lun0added=1
+ #testonline
+ else
+ # Device not present
+ # return
+ # Find alternative LUN to send getluns to
+ for dev in /sys/class/scsi_device/${host}:${channel}:${id}:*; do
+ [ -d "$dev" ] || continue
+ lun=${dev##*:}
+ break
+ done
+ fi
+ fi
+ targetluns=$(getluns)
+ REPLUNSTAT=$?
+ lunremove=
+ #echo "getluns reports " $targetluns
+ olddev=$(find /sys/class/scsi_device/ -name "$host:$channel:$id:*" 2>/dev/null | sort -t: -k4 -n)
+ oldtargets="$targetluns"
+ # OK -- if we don't have a LUN to send a REPORT_LUNS to, we could
+ # fall back to wildcard scanning. Same thing if the device does not
+ # support REPORT_LUNS
+ # TODO: We might be better off to ALWAYS use wildcard scanning if
+ # it works
+ if [ "$REPLUNSTAT" = "1" ] ; then
+ if [ -e "/sys/class/scsi_host/host${host}/scan" ] ; then
+ echo "$channel $id -" > "/sys/class/scsi_host/host${host}/scan" 2> /dev/null
+ udevadm_settle
+ else
+ echo "scsi add-single-device $host $channel $id $SCAN_WILD_CARD" > /proc/scsi/scsi
+ fi
+ targetluns=$(find /sys/class/scsi_device/ -name "$host:$channel:$id:*" -printf "%f\n" | cut -d : -f 4)
+ let found+=$(echo "$targetluns" | wc -l)
+ let found-=$(echo "$olddev" | wc -l)
+ fi
+ [ -z "$targetluns" ] && targetluns="$oldtargets"
+ # Check existing luns
+ for dev in $olddev; do
+ [ -d "$dev" ] || continue
+ lun=${dev##*:}
+ newsearch=
+ inlist=
+ # OK, is existing $lun (still) in reported list
+ for tmplun in $targetluns; do
+ if [ "$tmplun" = "$lun" ] ; then
+ inlist=1
+ dolunscan $lun0added
+ [ $? -eq 1 ] && break
+ else
+ newsearch="$newsearch $tmplun"
+ fi
+ done
+ # OK, we have now done a lunscan on $lun and
+ # $newsearch is the old $targetluns without $lun
+ if [ -z "$inlist" ]; then
+ # Stale lun
+ lunremove="$lunremove $lun"
+ fi
+ # $lun removed from $lunsearch
+ targetluns=${newsearch# }
+ done
+ # Add new ones and check stale ones
+ for lun in $targetluns $lunremove; do
+ dolunscan $lun0added
+ [ $? -eq 1 ] && break
+ done
+}
+
+# Perform search (scan $host)
+dosearch ()
+{
+ if [ -z "$channelsearch" ] ; then
+ chanlist
+ fi
+ for channel in $channelsearch; do
+ if [ -z "$idsearch" ] ; then
+ if [ -z "$lunsearch" ] ; then
+ idlist
+ else
+ idsearch=$(find /sys/bus/scsi/devices -name "target${host}:${channel}:*" -printf "%f\n" | cut -f 3 -d :)
+ fi
+ fi
+ for id in $idsearch; do
+ if [ -z "$lunsearch" ] ; then
+ doreportlun
+ else
+ for lun in $lunsearch; do
+ dolunscan
+ [ $? -eq 1 ] && break
+ done
+ fi
+ done
+ done
+}
+
+expandlist ()
+{
+ list=$1
+ result=""
+ first=${list%%,*}
+ rest=${list#*,}
+ while [ ! -z "$first" ] ; do
+ beg=${first%%-*};
+ if [ "$beg" = "$first" ] ; then
+ result="$result $beg";
+ else
+ end=${first#*-}
+ result="$result $(seq -s ' ' $beg $end)"
+ fi
+ [ "$rest" = "$first" ] && rest=""
+ first=${rest%%,*}
+ rest=${rest#*,}
+ done
+ echo "$result"
+}
+
+searchexisting()
+{
+ local tmpch;
+ local tmpid
+ local match=0
+ local targets=
+
+ targets=$(find /sys/bus/scsi/devices -name "target${host}:*" -printf "%f\n" | cut -d : -f 2-3)
+ # Nothing came back on this host, so we should skip it
+ [ -z "$targets" ] && return
+
+ local target=;
+ for target in $targets ; do
+ channel=${target%:*}
+ id=${target#*:}
+ if [ -n "$channelsearch" ] ; then
+ for tmpch in $channelsearch ; do
+ [ $tmpch -eq "$channel" ] && match=1
+ done
+ else
+ match=1
+ fi
+
+ [ $match -eq 0 ] && continue
+ match=0
+
+ if [ "$filter_ids" -eq 1 ] ; then
+ for tmpid in $idsearch ; do
+ if [ "$tmpid" = "$id" ] ; then
+ match=1
+ fi
+ done
+ else
+ match=1
+ fi
+
+ [ $match -eq 0 ] && continue
+
+ if [ -z "$lunsearch" ] ; then
+ doreportlun
+ else
+ for lun in $lunsearch ; do
+ dolunscan
+ [ $? -eq 1 ] && break
+ done
+ fi
+ done
+}
+
+getallmultipathinfo()
+{
+ local mp=
+ local uuid=
+ local dmtmp=
+ local maj_min=
+ local tmpfile=
+
+ truncate -s 0 $TMPLUNINFOFILE
+ for mp in $($DMSETUP ls --target=multipath | cut -f 1) ; do
+ [ "$mp" = "No" ] && break;
+ maj_min=$($DMSETUP status "$mp" | cut -d " " -f14)
+ if [ ! -L /dev/mapper/${mp} ]; then
+ echo "softlink /dev/mapper/${mp} not available."
+ continue
+ fi
+ local ret=$(readlink /dev/mapper/$mp 2>/dev/null)
+ if [[ $? -ne 0 || -z "$ret" ]]; then
+ echo "readlink /dev/mapper/$mp failed. check multipath status."
+ continue
+ fi
+ dmtmp=$(basename $ret)
+ uuid=$(cut -f2 -d- "/sys/block/$dmtmp/dm/uuid")
+ echo "$mp $maj_min $dmtmp $uuid" >> $TMPLUNINFOFILE
+ done
+}
+
+# Go through all of the existing devices and figure out any that have been remapped
+findremapped()
+{
+ local hctl=;
+ local devs=
+ local sddev=
+ local id_serial=
+ local id_serial_old=
+ local remapped=
+ mpaths=""
+ local tmpfile=
+
+ tmpfile=$(mktemp /tmp/rescan-scsi-bus.XXXXXXXX 2> /dev/null)
+ if [ -z "$tmpfile" ] ; then
+ tmpfile="/tmp/rescan-scsi-bus.$$"
+ rm -f $tmpfile
+ fi
+
+ # Get all of the ID_SERIAL attributes, after finding their sd node
+ devs=$(ls /sys/class/scsi_device/)
+ for hctl in $devs ; do
+ if [ -d "/sys/class/scsi_device/$hctl/device/block" ] ; then
+ sddev=$(ls "/sys/class/scsi_device/$hctl/device/block")
+ id_serial_old=$(udevadm info -q all -n "$sddev" | grep "ID_SERIAL=" | cut -d"=" -f2)
+ [ -z "$id_serial_old" ] && id_serial_old="none"
+ echo "$hctl $sddev $id_serial_old" >> $tmpfile
+ fi
+ done
+
+ # Trigger udev to update the info
+ echo -n "Triggering udev to update device information... "
+ /sbin/udevadm trigger
+ udevadm_settle 2>&1 /dev/null
+ echo "Done"
+
+ getallmultipathinfo
+
+ # See what changed and reload the respective multipath device if applicable
+ while read -r hctl sddev id_serial_old ; do
+ remapped=0
+ id_serial=$(udevadm info -q all -n "$sddev" | grep "ID_SERIAL=" | cut -d"=" -f2)
+ [ -z "$id_serial" ] && id_serial="none"
+ if [ "$id_serial_old" != "$id_serial" ] ; then
+ remapped=1
+ fi
+ # If udev events updated the disks already, but the multipath device isn't update
+ # check for old devices to make sure we found remapped luns
+ if [ -n "$mp_enable" ] && [ $remapped -eq 0 ]; then
+ findmultipath "$sddev" $id_serial
+ if [ $? -eq 1 ] ; then
+ remapped=1
+ fi
+ fi
+
+ # if uuid is 1, it's unmapped, so we don't want to treat it as a remap
+ # if remapped flag is 0, just skip the rest of the logic
+ if [ "$id_serial" = "1" ] || [ $remapped -eq 0 ] ; then
+ continue
+ fi
+ printf "${yellow}REMAPPED: %s ${norm}"
+ host=$(echo "$hctl" | cut -d":" -f1)
+ channel=$(echo "$hctl" | cut -d":" -f2)
+ id=$(echo "$hctl" | cut -d":" -f3)
+ lun=$(echo "$hctl" | cut -d":" -f4)
+ procscsiscsi
+ echo "$SCSISTR"
+ incrchgd "$hctl"
+ done < $tmpfile
+ rm -f $tmpfile
+
+ if [ -n "$mp_enable" ] && [ -n "$mpaths" ] ; then
+ echo "Updating multipath device mappings"
+ flushmpaths
+ $MULTIPATH | grep "create:" 2> /dev/null
+ fi
+}
+
+incrfound()
+{
+ local hctl="$1"
+ if [ -n "$hctl" ] ; then
+ let found+=1
+ FOUNDDEVS="$FOUNDDEVS\t[$hctl]\n"
+ else
+ return
+ fi
+}
+
+incrchgd()
+{
+ local hctl="$1"
+ if [ -n "$hctl" ] ; then
+ if ! echo "$CHGDEVS" | grep -q "\[$hctl\]"; then
+ let updated+=1
+ CHGDEVS="$CHGDEVS\t[$hctl]\n"
+ fi
+ else
+ return
+ fi
+
+ if [ -n "$mp_enable" ] ; then
+ local sdev
+
+ sdev=$(findsddev "$hctl")
+ if [ -n "$sdev" ] ; then
+ findmultipath "$sdev"
+ fi
+ fi
+}
+
+incrrmvd()
+{
+ local hctl="$1"
+ if [ -n "$hctl" ] ; then
+ let rmvd+=1;
+ RMVDDEVS="$RMVDDEVS\t[$hctl]\n"
+ else
+ return
+ fi
+
+ if [ -n "$mp_enable" ] ; then
+ local sdev
+
+ sdev=$(findsddev "$hctl")
+ if [ -n "$sdev" ] ; then
+ findmultipath "$sdev"
+ fi
+ fi
+}
+
+findsddev()
+{
+ local hctl="$1"
+ local sddev=
+ local blkpath
+
+ blkpath="/sys/class/scsi_device/$hctl/device/block"
+ if [ -e "$blkpath" ] ; then
+ sddev=$(ls "$blkpath")
+ echo "$sddev"
+ fi
+}
+
+addmpathtolist()
+{
+ local mp="$1"
+ local mp2=
+
+ for mp2 in $mpaths ; do
+ # The multipath device is already in the list
+ if [ "$mp2" = "$mp" ] ; then
+ return
+ fi
+ done
+ mpaths="$mpaths $mp"
+}
+
+findmultipath()
+{
+ local dev="$1"
+ local find_mismatch="$2"
+ local mp=
+ local found_dup=0
+ local maj_min=
+
+ # Need a sdev, and executable multipath and dmsetup command here
+ if [ -z "$dev" ] || [ ! -x "$DMSETUP" ] || [ ! -x "$MULTIPATH" ] ; then
+ return 1
+ fi
+
+ maj_min=$(cat "/sys/block/$dev/dev")
+ mp=$(cat $TMPLUNINFOFILE | grep -w "$maj_min" | cut -d " " -f1)
+ if [ -n "$mp" ]; then
+ if [ -n "$find_mismatch" ] ; then
+ uuid=$(cat $TMPLUNINFOFILE | grep -w "$maj_min" | cut -d " " -f4)
+ if [ "$find_mismatch" != "$uuid" ] ; then
+ addmpathtolist "$mp"
+ found_dup=1
+ fi
+ else
+ # Normal mode: Find the first multipath with the sdev
+ # and add it to the list
+ addmpathtolist "$mp"
+ return
+ fi
+ fi
+
+ # Return 1 to signal that a duplicate was found to the calling function
+ if [ $found_dup -eq 1 ] ; then
+ return 1
+ else
+ return 0
+ fi
+}
+
+reloadmpaths()
+{
+ local mpath
+ if [ ! -x "$MULTIPATH" ] ; then
+ echo "no -x multipath"
+ return
+ fi
+
+ # Pass 1 as the argument to reload all mpaths
+ if [ "$1" = "1" ] ; then
+ echo "Reloading all multipath devices"
+ $MULTIPATH -r > /dev/null 2>&1
+ return
+ fi
+
+ # Reload the multipath devices
+ for mpath in $mpaths ; do
+ echo -n "Reloading multipath device $mpath... "
+ if $MULTIPATH -r "$mpath" > /dev/null 2>&1 ; then
+ echo "Done"
+ else
+ echo "Fail"
+ fi
+ done
+}
+
+resizempaths()
+{
+ local mpath
+
+ for mpath in $mpaths ; do
+ echo -n "Resizing multipath map $mpath ..."
+ multipathd -k"resize map $mpath"
+ let updated+=1
+ done
+}
+
+flushmpaths()
+{
+ local mpath
+ local remove=""
+ local i
+ local flush_retries=5
+
+ if [ -n "$1" ] ; then
+ for mpath in $($DMSETUP ls --target=multipath | cut -f 1) ; do
+ [ "$mpath" = "No" ] && break
+ num=$($DMSETUP status "$mpath" | awk 'BEGIN{RS=" ";active=0}/[0-9]+:[0-9]+/{dev=1}/A/{if (dev == 1) active++; dev=0} END{ print active }')
+ if [ "$num" -eq 0 ] ; then
+ remove="$remove $mpath"
+ fi
+ done
+ else
+ remove="$mpaths"
+ fi
+
+ for mpath in $remove ; do
+ i=0
+ echo -n "Flushing multipath device $mpath... "
+ while [ $i -lt $flush_retries ] ; do
+ $DMSETUP message "$mpath" 0 fail_if_no_path > /dev/null 2>&1
+ if $MULTIPATH -f "$mpath" > /dev/null 2>&1 ; then
+ echo "Done ($i retries)"
+ break
+ elif [ $i -eq $flush_retries ] ; then
+ echo "Fail"
+ fi
+ sleep 0.02
+ let i=$i+1
+ done
+ done
+}
+
+
+# Find resized luns
+findresized()
+{
+ local devs=
+ local size=
+ local new_size=
+ local sysfs_path=
+ local sddev=
+ local i=
+ local m=
+ local mpathsize=
+ declare -a mpathsizes
+
+ if [ -z "$lunsearch" ] ; then
+ devs=$(ls /sys/class/scsi_device/)
+ else
+ for lun in $lunsearch ; do
+ devs="$devs $(cd /sys/class/scsi_device/ && ls -d *:${lun})"
+ done
+ fi
+
+ for hctl in $devs ; do
+ sysfs_path="/sys/class/scsi_device/$hctl/device"
+ if [ -d "$sysfs_path/block" ] ; then
+ sddev=$(ls "$sysfs_path/block")
+ size=$(cat "$sysfs_path/block/$sddev/size")
+
+ echo 1 > "$sysfs_path/rescan"
+ new_size=$(cat "$sysfs_path/block/$sddev/size")
+
+ if [ "$size" != "$new_size" ] && [ "$size" != "0" ] && [ "$new_size" != "0" ] ; then
+ printf "${yellow}RESIZED: %s ${norm}"
+ host=$(echo "$hctl" | cut -d":" -f1)
+ channel=$(echo "$hctl" | cut -d":" -f2)
+ id=$(echo "$hctl" | cut -d":" -f3)
+ lun=$(echo "$hctl" | cut -d":" -f4)
+
+ procscsiscsi
+ echo "$SCSISTR"
+ incrchgd "$hctl"
+ fi
+ fi
+ done
+
+ if [ -n "$mp_enable" ] && [ -n "$mpaths" ] ; then
+ i=0
+ for m in $mpaths ; do
+ mpathsizes[$i]="$($MULTIPATH -l "$m" | egrep -o [0-9]+.[0-9]+[KMGT])"
+ let i=$i+1
+ done
+ resizempaths
+ i=0
+ for m in $mpaths ; do
+ mpathsize="$($MULTIPATH -l "$m" | egrep -o [0-9\.]+[KMGT])"
+ echo "$m ${mpathsizes[$i]} => $mpathsize"
+ let i=$i+1
+ done
+ fi
+}
+
+FOUNDDEVS=""
+CHGDEVS=""
+RMVDDEVS=""
+
+# main
+if [ "@$1" = @--help ] || [ "@$1" = @-h ] || [ "@$1" = "@-?" ] ; then
+ echo "Usage: rescan-scsi-bus.sh [options] [host [host ...]]"
+ echo "Options:"
+ echo " -a scan all targets, not just currently existing [default: disabled]"
+ echo " -c enables scanning of channels 0 1 [default: 0 / all detected ones]"
+ echo " -d enable debug [default: 0]"
+ echo " -f flush failed multipath devices [default: disabled]"
+ echo " -h help: print this usage message then exit"
+ echo " -i issue a FibreChannel LIP reset [default: disabled]"
+ echo " -I SECS issue a FibreChannel LIP reset and wait for SECS seconds [default: disabled]"
+ echo " -l activates scanning for LUNs 0--7 [default: 0]"
+ echo " -L NUM activates scanning for LUNs 0--NUM [default: 0]"
+ echo " -m update multipath devices [default: disabled]"
+ echo " -r enables removing of devices [default: disabled]"
+ echo " -s look for resized disks and reload associated multipath devices, if applicable"
+ echo " -t SECS timeout for testing if device is online. Test is skipped if 0 [default: 30]"
+ echo " -u look for existing disks that have been remapped"
+ echo " -V print version date then exit"
+ echo " -w scan for target device IDs 0--15 [default: 0--7]"
+ echo "--alltargets: same as -a"
+ echo "--attachpq3: Tell kernel to attach sg to LUN 0 that reports PQ=3"
+ echo "--channels=LIST: Scan only channel(s) in LIST"
+ echo "--color: use coloured prefixes OLD/NEW/DEL"
+ echo "--flush: same as -f"
+ echo "--forceremove: Remove stale devices (DANGEROUS)"
+ echo "--forcerescan: Remove and readd existing devices (DANGEROUS)"
+ echo "--help: print this usage message then exit"
+ echo "--hosts=LIST: Scan only host(s) in LIST"
+ echo "--ids=LIST: Scan only target ID(s) in LIST"
+ echo "--ignore-rev: Ignore the revision change"
+ echo "--issue-lip: same as -i"
+ echo "--issue-lip-wait=SECS: same as -I"
+ echo "--largelun: Tell kernel to support LUNs > 7 even on SCSI2 devs"
+ echo "--luns=LIST: Scan only lun(s) in LIST"
+ echo "--multipath: same as -m"
+ echo "--no-lip-scan: don't scan FC Host with issue-lip"
+ echo "--nooptscan: don't stop looking for LUNs if 0 is not found"
+ echo "--remove: same as -r"
+ echo "--reportlun2: Tell kernel to try REPORT_LUN even on SCSI2 devices"
+ echo "--resize: same as -s"
+ echo "--sparselun: Tell kernel to support sparse LUN numbering"
+ echo "--sync/nosync: Issue a sync / no sync [default: sync if remove]"
+ echo "--timeout=SECS: same as -t"
+ echo "--update: same as -u"
+ echo "--version: same as -V"
+ echo "--wide: same as -w"
+ echo ""
+ echo "Host numbers may thus be specified either directly on cmd line (deprecated)"
+ 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
+
+if [ "@$1" = @--version ] || [ "@$1" = @-V ] ; then
+ echo ${VERSION}
+ exit 0
+fi
+
+if [ ! -d /sys/class/scsi_host/ ] && [ ! -d /proc/scsi/ ] ; then
+ echo "Error: SCSI subsystem not active"
+ exit 1
+fi
+
+# Make sure sg is there
+modprobe sg >/dev/null 2>&1
+
+if [ -x /usr/bin/sg_inq ] ; then
+ sg_version=$(sg_inq -V 2>&1 | cut -d " " -f 3)
+ if [ -n "$sg_version" ] ; then
+ sg_ver_maj=${sg_version:0:1}
+ sg_version=${sg_version##?.}
+ let sg_version+=$((100 * sg_ver_maj))
+ fi
+ sg_version=${sg_version##0.}
+ #echo "\"$sg_version\""
+ if [ -z "$sg_version" ] || [ "$sg_version" -lt 70 ] ; then
+ sg_len_arg="-36"
+ else
+ sg_len_arg="--len=36"
+ fi
+else
+ echo "WARN: /usr/bin/sg_inq not present -- please install sg3_utils"
+ echo " or rescan-scsi-bus.sh might not fully work."
+fi
+
+# defaults
+unsetcolor
+debug=0
+lunsearch=
+opt_idsearch=$(seq -s ' ' 0 7)
+filter_ids=0
+opt_channelsearch=
+remove=
+updated=0
+update=0
+resize=0
+forceremove=
+optscan=1
+sync=1
+existing_targets=1
+mp_enable=
+lipreset=-1
+timeout=30
+declare -i scan_flags=0
+ignore_rev=0
+no_lip_scan=0
+
+# Scan options
+opt="$1"
+while [ ! -z "$opt" ] && [ -z "${opt##-*}" ] ; do
+ opt=${opt#-}
+ case "$opt" in
+ a) existing_targets=;; #Scan ALL targets when specified
+ c) opt_channelsearch="0 1" ;;
+ d) debug=1 ;;
+ f) flush=1 ;;
+ i) lipreset=0 ;;
+ I) shift; lipreset=$1 ;;
+ l) lunsearch=$(seq -s ' ' 0 7) ;;
+ L) lunsearch=$(seq -s ' ' 0 "$2"); shift ;;
+ m) mp_enable=1 ;;
+ r) remove=1 ;;
+ s) resize=1; mp_enable=1 ;;
+ t) timeout=$2; shift ;;
+ u) update=1 ;;
+ w) opt_idsearch=$(seq -s ' ' 0 15) ;;
+ -alltargets) existing_targets=;;
+ -attachpq3) scan_flags=$((scan_flags|0x1000000)) ;;
+ -channels=*) arg=${opt#-channels=};opt_channelsearch=$(expandlist "$arg") ;;
+ -color) setcolor ;;
+ -flush) flush=1 ;;
+ -forceremove) remove=1; forceremove=1 ;;
+ -forcerescan) remove=1; forcerescan=1 ;;
+ -hosts=*) arg=${opt#-hosts=}; hosts=$(expandlist "$arg") ;;
+ -ids=*) arg=${opt#-ids=}; opt_idsearch=$(expandlist "$arg") ; filter_ids=1;;
+ -ignore-rev) ignore_rev=1;;
+ -issue-lip) lipreset=0 ;;
+ -issue-lip-wait=*) lipreset=${opt#-issue-lip-wait=};;
+ -largelun) scan_flags=$((scan_flags|0x200)) ;;
+ -luns=*) arg=${opt#-luns=}; lunsearch=$(expandlist "$arg") ;;
+ -multipath) mp_enable=1 ;;
+ -no-lip-scan) no_lip_scan=1 ;;
+ -nooptscan) optscan=0 ;;
+ -nosync) sync=0 ;;
+ -remove) remove=1 ;;
+ -reportlun2) scan_flags=$((scan_flags|0x20000)) ;;
+ -resize) resize=1;;
+ -timeout=*) timeout=${opt#-timeout=};;
+ -sparselun) scan_flags=$((scan_flags|0x40)) ;;
+ -sync) sync=2 ;;
+ -update) update=1;;
+ -wide) opt_idsearch=$(seq -s ' ' 0 15) ;;
+ *) echo "Unknown option -$opt !" ;;
+ esac
+ shift
+ opt="$1"
+done
+
+if [ -z "$hosts" ] ; then
+ if [ -d /sys/class/scsi_host ] ; then
+ findhosts_26
+ else
+ findhosts
+ fi
+fi
+
+if [ -d /sys/class/scsi_host ] && [ ! -w /sys/class/scsi_host ]; then
+ echo "You need to run scsi-rescan-bus.sh as root"
+ exit 2
+fi
+[ "$sync" = 1 ] && [ "$remove" = 1 ] && sync=2
+if [ "$sync" = 2 ] ; then
+ echo "Syncing file systems"
+ sync
+fi
+if [ -w /sys/module/scsi_mod/parameters/default_dev_flags ] && [ $scan_flags != 0 ] ; then
+ OLD_SCANFLAGS=$(cat /sys/module/scsi_mod/parameters/default_dev_flags)
+ NEW_SCANFLAGS=$((OLD_SCANFLAGS|scan_flags))
+ if [ "$OLD_SCANFLAGS" != "$NEW_SCANFLAGS" ] ; then
+ echo -n "Temporarily setting kernel scanning flags from "
+ printf "0x%08x to 0x%08x\n" "$OLD_SCANFLAGS" "$NEW_SCANFLAGS"
+ echo $NEW_SCANFLAGS > /sys/module/scsi_mod/parameters/default_dev_flags
+ else
+ unset OLD_SCANFLAGS
+ fi
+fi
+DMSETUP=$(which dmsetup)
+[ -z "$DMSETUP" ] && flush= && mp_enable=
+MULTIPATH=$(which multipath)
+[ -z "$MULTIPATH" ] && flush= && mp_enable=
+
+echo -n "Scanning SCSI subsystem for new devices"
+[ -z "$flush" ] || echo -n ", flush failed multipath devices,"
+[ -z "$remove" ] || echo -n " and remove devices that have disappeared"
+echo
+declare -i found=0
+declare -i updated=0
+declare -i rmvd=0
+
+if [ -n "$flush" ] ; then
+ if [ -x "$MULTIPATH" ] ; then
+ flushmpaths 1
+ fi
+fi
+
+# Update existing mappings
+if [ $update -eq 1 ] ; then
+ echo "Searching for remapped LUNs"
+ findremapped
+ # If you've changed the mapping, there's a chance it's a different size
+ mpaths=""
+ findresized
+# Search for resized LUNs
+elif [ $resize -eq 1 ] ; then
+ echo "Searching for resized LUNs"
+ findresized
+# Normal rescan mode
+else
+ for host in $hosts; do
+ echo -n "Scanning host $host "
+ if [ $no_lip_scan -eq 0 ] && [ -e "/sys/class/fc_host/host$host" ] ; then
+ # It's pointless to do a target scan on FC
+ issue_lip=/sys/class/fc_host/host$host/issue_lip
+ if [ -e "$issue_lip" ] && [ "$lipreset" -ge 0 ] ; then
+ echo 1 > "$issue_lip" 2> /dev/null;
+ udevadm_settle
+ [ "$lipreset" -gt 0 ] && sleep "$lipreset"
+ fi
+ channelsearch=
+ idsearch=
+ else
+ channelsearch=$opt_channelsearch
+ idsearch=$opt_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 $lunsearch"
+ else
+ echo ", all LUNs"
+ fi
+
+ if [ -n "$existing_targets" ] ; then
+ searchexisting
+ else
+ dosearch
+ fi
+ done
+ if [ -n "$OLD_SCANFLAGS" ] ; then
+ echo "$OLD_SCANFLAGS" > /sys/module/scsi_mod/parameters/default_dev_flags
+ fi
+fi
+
+let rmvd_found=$rmvd+$found
+if [ -n "$mp_enable" ] && [ $rmvd_found -gt 0 ] ; then
+ echo "Attempting to update multipath devices..."
+ if [ $rmvd -gt 0 ] ; then
+ udevadm_settle
+ echo "Removing multipath mappings for removed devices if all paths are now failed... "
+ flushmpaths 1
+ fi
+ if [ $found -gt 0 ] ; then
+ /sbin/udevadm trigger --sysname-match=sd*
+ udevadm_settle
+ if [ -x "$MULTIPATH" ] ; then
+ echo "Trying to discover new multipath mappings for newly discovered devices... "
+ $MULTIPATH | grep "create:" 2> /dev/null
+ fi
+ fi
+fi
+
+echo "$found new or changed device(s) found. "
+if [ ! -z "$FOUNDDEVS" ] ; then
+ echo -e "$FOUNDDEVS"
+fi
+echo "$updated remapped or resized device(s) found."
+if [ ! -z "$CHGDEVS" ] ; then
+ echo -e "$CHGDEVS"
+fi
+echo "$rmvd device(s) removed. "
+if [ ! -z "$RMVDDEVS" ] ; then
+ echo -e "$RMVDDEVS"
+fi
+
+# Local Variables:
+# sh-basic-offset: 2
+# End:
+
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-12 11:10:18 +0000