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