s390-tools/dasd_configure.suse

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#! /bin/sh
#
# dasd_configure
#
# Copyright (c) 2017 SUSE LINUX GmbH, Nuernberg, Germany.
#
# Configures a DASD device 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:
# dasd_configure [-f -t <dasd_type> ] <ccwid> <online> [use_diag]
#
# -f Override safety checks
# -t DASD type. Must be provided if -f is used. Only dasd-eckd and
# dasd-fba are supported - Deprecated
# 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
# use_diag = 0 to _not_ use z/VM DIAG250 I/O, which is the default
# 1 to use z/VM DIAG250 I/O
#
# Return values:
# Return codes are determined by the chzdev command, with one exception: If a
# DASD volume is not formatted, we will issue a return code of 8.
#
mesg () {
echo "$@"
}
debug_mesg () {
case "${DEBUG}" in
yes) mesg "$@" ;;
*) ;;
esac
}
usage(){
echo "Usage: ${0} [-f -t <dasd_type> ] <ccwid> <online> [use_diag]"
echo
echo " -f Override safety checks"
echo " -t DASD type. Must be provided if -f is used. Only dasd-eckd and"
echo " dasd-fba are supported - Deprecated"
echo " ccwid = x.y.ssss where"
echo " x is always 0 until IBM creates something that uses that number"
echo " y is the subchannel set ID (SSID). Most often"
echo " this is 0, but it could be non-zero"
echo " ssss is the four digit device address of the subchannel, in"
echo " hexidecimal, with leading zeros."
echo " online = 0 to take the device offline"
echo " 1 to bring the device online"
echo " use_diag = 0 to _not_ use z/VM DIAG250 I/O, which is the default"
echo " 1 to use z/VM DIAG250 I/O"
}
if [ "${DEBUG}" != "yes" ]; then
DEBUG="no"
fi
DATE=$(date)
DASD_FORCE=0
############################################################
# Parse the parameters from the command line
#
ARGS=$(getopt --options ft: -n "dasd_configure" -- "$@")
if [ $? != 0 ] ; then echo "Terminating..." >&2 ; exit 1 ; fi
eval set -- "${ARGS}"
debug_mesg "All the parms passed were ${ARGS}"
while true; do
case "${1}" in
-f) debug_mesg "This used to mean udev rules will always be generated."
debug_mesg "For chzdev, it means safety checks will be overridden."
debug_mesg "Kinda sorta the same thing, really."
PARM_LIST="${PARM_LIST} -f"
DASD_FORCE=1
shift 1
;;
-t) debug_mesg "This used to set the card type to ${2}"
debug_mesg "Now it gets ignored."
shift 2
;;
--) debug_mesg "Found the end of parms indicator: --"
shift 1
break
;;
*) debug_mesg "At the catch-all select entry"
debug_mesg "What was selected was ${1}"
shift 1
;;
esac
done
CCW_CHAN_ID=${1}
ON_OFF=${2}
USE_DIAG=${3}
if [ -z "${CCW_CHAN_ID}" ] || [ -z "${ON_OFF}" ]; then
mesg "You didn't specify all the needed parameters."
usage
exit 1
fi
if [ -n "${USE_DIAG}" ]; then
PARM_LIST="${PARM_LIST} use_diag=${USE_DIAG}"
else PARM_LIST="${PARM_LIST} use_diag=0"
fi
if [ "${ON_OFF}" == 0 ]; then
debug_mesg "chzdev -d dasd --no-root-update ${CCW_CHAN_ID}"
chzdev -d dasd --no-root-update ${CCW_CHAN_ID}
elif [ "${ON_OFF}" == 1 ]; then
debug_mesg "chzdev -e dasd --no-root-update ${CCW_CHAN_ID} ${PARM_LIST}"
chzdev -e dasd --no-root-update ${CCW_CHAN_ID} ${PARM_LIST}
else mesg "You must specify a 0 or a 1 for the online/offline attribute."
usage
exit 1
fi
RC=${?}
if [ ${RC} -ne 0 ]; then
exit ${RC}
elif [ ${ON_OFF} == 1 ]; then
exitcode=0
# Extract the full busid so that we can reference the proper entries in /sys
BUSID=$(/sbin/lszdev dasd ${CCW_CHAN_ID} | /usr/bin/sed -e 1d | /usr/bin/tr -s " " | /usr/bin/cut -f2 -d" " )
# Make sure the DASD volume came online
for ((counter=0; counter<30; counter++)); do
sleep 0.1
read online < /sys/bus/ccw/devices/${BUSID}/online
if [ ${online} -eq 1 ] ; then
break
fi
done
if [ ${online} -ne 1 ]; then
debug_mesg "DASD ${CCW_CHAN_ID} did not come online."
exit 17
fi
# Check to see if the DASD volume is unformatted. If so, let YaST know.
read status < /sys/bus/ccw/devices/${BUSID}/status
if [ "${status}" == "unformatted" ]; then
mesg "DASD ${CCW_CHAN_ID} is unformatted."
exitcode=8
fi
fi
exit ${exitcode}