File zfcp_san_disc of Package s390-tools.13271
#!/bin/bash
#
# zfcp_san_disc
#
# Outputs a list of zFCP WWPNs or LUNs
#
# Usage:
# zfcp_san_disc [-h | -W | -L -p <WWPN> ] -b <BUS_ID>
#
# Return codes
# 1 zFCP sysfs directory not available
# 2 Invalid command line parameter
# 3 Too many commands used
# 4 Error retrieving HBA list
# 5 Bus ID not found
# 6 Error retrieving Port list
# 7 WWPN not found
# 8 Bus ID sysfs directory not available
# 9 WWPN sysfs directory not available/unable to add port to Bus ID
# 10 Error retrieving LUN list
# 11 HBA API device not available
#
START_DIR=`pwd`
SCRIPT_NAME=`basename $0`
cd `dirname $0`
SCRIPT_DIR=`pwd`
cd "${START_DIR}"
FCP_SYS_DIR='/sys/bus/ccw/drivers/zfcp'
# Commands available
LIST_WWPN='-W'
LIST_LUN='-L'
COMMAND=''
BUSID=''
WWPN=''
echo_err()
{
echo "$SCRIPT_NAME: $1" 1>&2
}
usage()
{
echo "$0 [-h | $LIST_WWPN | $LIST_LUN -p <WWPN>] -b <BUS_ID>" 1>&2
echo 1>&2
echo "Commands:" 1>&2
echo " $LIST_WWPN List WWPNs for the given BUS_ID" 1>&2
echo " $LIST_LUN List LUNs for the given BUS_ID and WWPN" 1>&2
echo " -h This usage information" 1>&2
echo "Options:" 1>&2
echo " -b BUSID Bus ID to use for listing" 1>&2
echo " -p WWPN WWPN to use for listing" 1>&2
}
list_lun()
{
local PRINT_WWPN
local BUSID_DIR
local WWPN_DIR
local ADDED_PORT
}
deactivate()
{
local ccw=$1
echo 0 > /sys/bus/ccw/devices/$ccw/online
}
lun_remove()
{
local syspath=$1
local lun=$2
echo "$lun" > $syspath/unit_remove
}
sg_remove()
{
local sg=$1
local sgnum
sgnum=${sg#/dev/sg}
: deactivate /sys/class/scsi_generic/sg$sgnum/device/delete
echo 1 > /sys/class/scsi_generic/sg$sgnum/device/delete
udevadm settle
}
while [ $# -gt 0 ]
do
case "$1" in
-b* )
if [ "$1" == "-b" ]
then
shift
BUSID="$1"
else
BUSID="${1:2}"
fi
BUSID=`echo $BUSID | tr A-F a-f`
;;
-p* )
if [ "$1" == "-p" ]
then
shift
WWPN="$1"
else
WWPN="${1:2}"
fi
WWPN=`echo $WWPN | tr A-FX a-fx`
;;
"$LIST_WWPN"|"$LIST_LUN" )
if [ -z "$COMMAND" -o "$1" == "$COMMAND" ]
then
COMMAND=$1
else
echo_err "You have already specified the $COMMAND command, and cannot use the $1 command also."
exit 3
fi
;;
-h )
usage
exit 0
;;
* )
usage
echo_err "Unknown command line parameter : $1"
exit 2
;;
esac
shift
done
if [ -z "$BUSID" ] ; then
echo_err "No bus ID given"
exit 2
fi
if [ -z "$COMMAND" ] ; then
echo_err "Please specify either -W or -L"
exit 2
fi
if [ ! -d /sys/bus/ccw/devices/$BUSID ] ; then
echo_err "Unknown bus ID $BUSID"
exit 2
fi
read devtype < /sys/bus/ccw/devices/$BUSID/devtype
read cutype < /sys/bus/ccw/devices/$BUSID/cutype
if [ "$cutype" != "1731/03" ] ; then
echo_err "Bus ID $BUSID is not an zfcp adapter"
exit 2
fi
if [ "$devtype" != "1732/03" -a "$devtype" != "1732/04" ] ; then
echo_err "Bus ID $BUSID is not an zfcp adapter"
exit 2
fi
# Now we're sure we're dealing with zfcp devices
if [ ! -d "$FCP_SYS_DIR" ] ; then
modprobe zfcp
fi
[ "$COMMAND" == "$LIST_LUN" -a -z "$WWPN" ] && usage && exit 2
read online < /sys/bus/ccw/devices/$BUSID/online
if [ "$online" != 1 ] ; then
# Activate adapter
echo 1 > /sys/bus/ccw/devices/$BUSID/online
read online < /sys/bus/ccw/devices/$BUSID/online
if [ "$online" != 1 ] ; then
echo_err "Cannot activate zfcp adapter at $BUSID"
exit 2
fi
trapcmd="deactivate $BUSID"
trap "$trapcmd" EXIT
fi
for loop in 1 2 3 4 5 ; do
read status < /sys/bus/ccw/devices/$BUSID/status
(( $status & 0x10000000 )) && break;
done
read wwpn_status < /sys/bus/ccw/devices/$BUSID/status
if !(( $wwpn_status & 0x10000000 )) ; then
echo_err "Adapter activation failed, status $wwpn_status"
exit 3
fi
for host in /sys/bus/ccw/devices/$BUSID/host* ; do
if [ -d $host ] ; then
hba_num=${host##*host}
fi
done
if [ -z "$hba_num" ] ; then
echo_err "No SCSI host allocated"
exit 3
fi
if [ "$COMMAND" == "$LIST_WWPN" ]
then
for PRINT_WWPN in /sys/bus/ccw/devices/$BUSID/0x*
do
test -d $PRINT_WWPN && echo ${PRINT_WWPN##*/}
done
exit 0
elif [ "$COMMAND" != "$LIST_LUN" ]
then
exit 1
fi
ERR=0
read allow_lun_scan < /sys/module/zfcp/parameters/allow_lun_scan
if [ "$allow_lun_scan" = "Y" ] ; then
read port_type < /sys/class/fc_host/host${hba_num}/port_type
if [ "$port_type" = "NPIV VPORT" ] ; then
skip_activation=1
fi
fi
if [ -z "$skip_activation" ] ; then
WWPN_DIR=/sys/bus/ccw/devices/$BUSID/$WWPN
if [ ! -d "${WWPN_DIR}" ]
then
echo_err "port $WWPN not found on zfcp $BUSID"
exit 9
fi
# Activate WLUN
if [ ! -d $WWPN_DIR/0xc101000000000000 ] ; then
echo 0xc101000000000000 > $WWPN_DIR/unit_add
orig_trapcmd="$trapcmd"
trapcmd="lun_remove $WWPN_DIR 0xc101000000000000; $trapcmd"
trap "$trapcmd" EXIT
activated=1
# Wait for udev to catch up
udevadm settle
sleep 1
fi
# Find corresponding sg device
sgdev=$(lsscsi -t -g $hba_num:-:-:49409 | sed -n "s/.* fc:$WWPN.* \(\/dev\/sg[0-9]*\)[[:blank:]]*$/\1/p")
if [ -c "$sgdev" ] ; then
if sg_luns $sgdev > /dev/null 2>&1 ; then
LUN_LIST=`sg_luns $sgdev | sed -n 's/^ \(.*\)/\1/p'`
trapcmd="sg_remove $sgdev; $trapcmd"
trap "$trapcmd" EXIT
wlun=1
else
wlun=
fi
fi
if [ -z "$wlun" ] ; then
if [ -n "$activated" ] ; then
trapcmd=$orig_trapcmd
trap "$trapcmd" EXIT
lun_remove $WWPN_DIR 0xc101000000000000
activated=
fi
# Activate LUN 0
if [ ! -d $WWPN_DIR/0x0000000000000000 ] ; then
echo 0 > $WWPN_DIR/unit_add
orig_trapcmd=$trapcmd
trapcmd="lun_remove $WWPN_DIR 0x0000000000000000; $trapcmd"
trap "$trapcmd" EXIT
activated=1
# Wait for udev to catch up
udevadm settle
sleep 1
fi
# Find corresponding sg device
sgdev=$(lsscsi -t -g $hba_num:-:-:0 | sed -n "s/.* fc:$WWPN.* \(\/dev\/sg[^[:blank:]]*\)[[:blank:]]*$/\1/p")
if [ -c "$sgdev" ] ; then
if sg_luns $sgdev > /dev/null 2>&1 ; then
LUN_LIST=`sg_luns $sgdev | sed -n 's/^ \(.*\)/\1/p'`
fi
if [ -n "$activated" ] ; then
trapcmd="sg_remove $sgdev; $trapcmd"
trap "$trapcmd" EXIT
fi
else
echo_err "Unable to activate LUN 0"
trap "$trapcmd" EXIT
lun_remove $WWPN_DIR 0x0000000000000000
activated=
sgdev=
ERR=10
fi
fi
for LUN in $LUN_LIST ; do
echo 0x$LUN
done
exit $ERR
else
for loop in 1 2 3 4 5 ; do
if [ -n "$(ls -d /sys/class/fc_remote_ports/rport-${hba_num}:* 2>/dev/null)" ] ; then
break
else
sleep 1
fi
done
if [ -z "$(ls -d /sys/class/fc_remote_ports/rport-${hba_num}:* 2>/dev/null)" ]; then
echo "The remote Fiber Channel port has not become available. Exiting"
exit 1
fi
for rport in /sys/class/fc_remote_ports/rport-${hba_num}:* ; do
[ -f ${rport}/port_name ] || continue
read port_name < ${rport}/port_name
if [ "$port_name" = "$WWPN" ] ; then
for t in ${rport}/device/target* ; do
[ -f ${t}/uevent ] || continue
targetid=${t#*target}
targetid=${targetid##*:}
break
done
fi
done
lsscsi -xx ${hba_num}:0:${targetid}:- | sed -n "s/\[${hba_num}:0:${targetid}:\(0x[0-9a-f]*\)\].*/\1/p"
fi
