s390-tools/zfcp_disk_configure

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#!/bin/sh
#
# zfcp_disk_configure
#
# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
#
# Configures a zfcp-attached Logical Unit by calling the IBM-provided chzdev command.
# Whereas this script used to validate the parameters provided to it,
# we now rely on chzdev to do that instead. The script is intended only
# as a "translation layer" to provide backward compatability for older
# scripts and tools that invoke it.
#
# Usage:
# zfcp_disk_configure <ccwid> <wwpn> <lun> <online>
#
# ccwid = x.y.ssss where
# x is always 0 until IBM creates something that uses that number
# y is the subchannel set ID (SSID). Most often
# this is 0, but it could be non-zero
# ssss is the four digit device address of the subchannel, in
# hexidecimal, with leading zeros.
# online = 0 to take the device offline
# 1 to bring the device online
#
# Return values:
# Return codes are determined by the chzdev command.
#
mesg () {
echo "$@"
}
debug_mesg () {
case "${DEBUG}" in
yes) mesg "$@" ;;
*) ;;
esac
}
usage(){
echo "Usage: ${0} <ccwid> <wwpn> <lun> <online>"
echo " ccwid = x.y.ssss where"
echo " x is always 0 until IBM creates something that uses that number"
echo " y is the subchannel set ID (SSID). Most often"
echo " this is 0, but it could be non-zero"
echo " ssss is the four digit device address of the subchannel, in"
echo " hexidecimal, with leading zeros."
echo " online = 0 to take the device offline"
echo " 1 to bring the device online"
}
if [ "${DEBUG}" != "yes" ]; then
DEBUG="no"
fi
CCW_CHAN_ID=${1}
FCP_WWPN="${2}"
FCP_LUN="${3}"
ON_OFF=${4}
# normalise to lower case
FCP_WWPN=$(echo ${FCP_WWPN} | tr "A-Z" "a-z")
FCP_LUN=$(echo ${FCP_LUN} | tr "A-Z" "a-z")
if [ "${ON_OFF}" == 0 ]; then
debug_mesg "chzdev -d zfcp-lun --no-root-update ${CCW_CHAN_ID}:${FCP_WWPN}:${FCP_LUN}"
chzdev -d zfcp-lun --no-root-update ${CCW_CHAN_ID}:${FCP_WWPN}:${FCP_LUN}
elif [ "${ON_OFF}" == 1 ]; then
debug_mesg "chzdev -e zfcp-lun --no-root-update ${CCW_CHAN_ID}:${FCP_WWPN}:${FCP_LUN}"
chzdev -e zfcp-lun --no-root-update ${CCW_CHAN_ID}:${FCP_WWPN}:${FCP_LUN}
else mesg "You must specify a 0 or a 1 for the online/offline attribute."
usage
exit 1
fi