551 lines
15 KiB
Bash
551 lines
15 KiB
Bash
#!/bin/bash
|
|
# Skript to rescan SCSI bus, using the
|
|
# scsi add-single-device mechanism
|
|
# (w) 1998-03-19 Kurt Garloff <kurt@garloff.de> (c) GNU GPL
|
|
# (w) 2003-07-16 Kurt Garloff <garloff@suse.de> (c) GNU GPL
|
|
# $Id: rescan-scsi-bus.sh,v 1.24 2006/07/29 12:34:11 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
|
|
}
|
|
|
|
# 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
|
|
}
|
|
|
|
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
|
|
}
|
|
# 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 ${SCSIPATH}/device/type)
|
|
ITYPE=$(printtype $type)
|
|
SCSITMP=$(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 $RC; fi
|
|
# OK, device online, compare INQUIRY string
|
|
INQ=`sg_inq -36 /dev/$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
|
|
|
|
TYPE=$(printtype $IPTYPE)
|
|
procscsiscsi
|
|
TMPSTR=`echo "$SCSISTR" | grep 'Vendor:'`
|
|
if [ "$TMPSTR" != "$STR" ]; then
|
|
echo -e "\e[A\e[A\e[A\e[A${red}$SGDEV changed: ${bold}\nfrom:${SCSISTR#* } \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}:${lun}/device/delete
|
|
# Try readding, should fail if device is gone
|
|
echo "$channel $id $lun" > /sys/class/scsi_host/host${host}/scan
|
|
else
|
|
echo "scsi remove-single-device $devnr" > /proc/scsi/scsi
|
|
# Try readding, should fail if device is gone
|
|
echo "scsi add-single-device $devnr" > /proc/scsi/scsi
|
|
fi
|
|
fi
|
|
printf "\r\x1b[A\x1b[A\x1b[A${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 /proc/scsi/; then
|
|
echo "Error: SCSI subsystem not active"
|
|
exit 1
|
|
fi
|
|
|
|
# Make sure sg is there
|
|
modprobe sg >/dev/null 2>&1
|
|
|
|
# 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. "
|
|
|