s390-tools/detach_disks.sh.opensuse

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#!/bin/sh
DASDFILE=/tmp/dasd.list.$(mcookie)
DETFILE=/tmp/detach.disks.$(mcookie)
KEEPFILE=/tmp/keep.disks.$(mcookie)
NICFILE=/tmp/nic.list.$(mcookie)
FAILFILE=/tmp/error.$(mcookie)
function expand_RANGE(){
local RANGE=${1}
local RANGE_SAVE=${RANGE}
local DEVNO
local BEGIN=0
local END=0
RANGE=$(IFS=":-"; echo ${RANGE} | cut -f1-2 -d" " )
set -- ${RANGE}
let BEGIN=0x$1 2>/dev/null
let END=0x$2 2>/dev/null
if [ ${BEGIN} -eq 0 ] || [ ${END} -eq 0 ]; then
${msg} "An invalid device number range was specified: ${RANGE_SAVE}" >&2
touch ${FAILFILE}
return
fi
for DEVNO in $(eval echo {${BEGIN}..${END}})
do printf "%d\n" ${DEVNO}
done
}
function usage(){
echo "Usage: ${0} [ -F ] [ -q ] [ -h ]"
echo " -F Exit with failure if any invalid parms are detected."
echo " -q Don't generate any output."
echo " -h Display this help message."
}
msg="echo"
let FORCE_FAIL=0
############################################################
# Parse the parameters from the command line
#
ARGS=$(getopt -a --options Fhq -n "detach_devices" -- "$@")
if [ $? -ne 0 ]; then
usage
exit 3
fi
eval set -- "${ARGS}"
for ARG; do
case "${ARG}" in
-F) let FORCE_FAIL=1
shift 1
;;
-h) usage;
exit 0
;;
-q) msg="/bin/true"
shift 1
;;
--) shift 1
;;
*) ${msg} "Extraneous input detected: ${1}"
shift 1
;;
esac
done
if [ -r /etc/sysconfig/virtsetup ]; then
. /etc/sysconfig/virtsetup
else ${msg} "No /etc/sysconfig/virtsetup file was found."
exit 1
fi
# First, get a list of all the DASD devices we have for this guest, in decimal.
# (Trying to handle things in hex gets complicated.)
/usr/sbin/vmcp -b1048576 q v dasd | cut -f2 -d" " |\
while read HEXNO
do let DECNO=0x${HEXNO}
echo ${DECNO}
done > ${DASDFILE} 2>/dev/null
# If the system administrator specified certain devices to be detached
# let's put those device numbers in a file, one per line.
touch ${DETFILE}
for ADDR in $(IFS=", " ; echo ${ZVM_DISKS_TO_DETACH})
do if $(echo ${ADDR} | grep -iqE ":|-" 2>/dev/null)
then expand_RANGE ${ADDR} >> ${DETFILE}
else let DEVNO=0
let DEVNO=0x${ADDR} 2>/dev/null
if [ ${DEVNO} -eq 0 ]; then
${msg} "An invalid device number was specified: ${ADDR}" >&2
touch ${FAILFILE}
else printf "%d\n" ${DEVNO}
fi
fi
done > ${DETFILE}
# If the system administrator specified certain devices that should _not_
# be detached, let's put those in another file, one per line.
touch ${KEEPFILE}
for ADDR in $(IFS=", " ; echo ${ZVM_DISKS_TO_NOT_DETACH})
do if $(echo ${ADDR} | grep -iqE ":|-" 2>/dev/null)
then expand_RANGE ${ADDR} >> ${KEEPFILE}
else let DEVNO=0
let DEVNO=0x${ADDR} 2>/dev/null
if [ ${DEVNO} -eq 0 ]; then
${msg} "An invalid device number was specified: ${ADDR}" >&2
touch ${FAILFILE}
else printf "%d\n" ${DEVNO}
fi
fi
done > ${KEEPFILE}
if [ ${FORCE_FAIL} -eq 1 ] && [ -e ${FAILFILE} ]; then
let RETURN_CODE=1
${msg} "Terminating detach_disk because of input errors."
else
# If the system administrator specified that all "unused" disks should be
# detached, compare the disks lsdasd show as activated to the complete
# list of disks we have currently, and add the inactive ones to the
# file containing devices to be detached
if [ "${ZVM_DETACH_ALL_UNUSED}" == "yes" ]; then
lsdasd -s | sed -e 1,2d | cut -f1 -d" " | \
while read ADDR
do let DEVNO=0x${ADDR}
sed -i -e "/^${DEVNO}$/d" ${DASDFILE}
done
cat ${DASDFILE} >> ${DETFILE}
fi
# Now remove any "to be kept" disks from the detach file
while read DEVNO
do sed -i -e "/^${DEVNO}/d" ${DETFILE}
done < ${KEEPFILE}
# Get a list of all the virtual NICs since they require an
# extra keyword to detach. Contrary to what we've done before
# these will be hex values
/usr/sbin/vmcp -b1048576 q nic | grep Adapter | cut -f2 -d" " | cut -f1 -d. > ${NICFILE}
# Now we sort the device numbers and detach them.
sort -un ${DETFILE} | \
while read DEVNO
do HEXNO=$(printf %04X ${DEVNO})
if grep -q ^${HEXNO}$ ${NICFILE} 2>/dev/null ; then
vmcp detach nic ${HEXNO} 2>/dev/null
else vmcp detach ${HEXNO} 2>/dev/null
fi
done
let RETURN_CODE=0
fi
rm -f ${DASDFILE} ${DETFILE} ${KEEPFILE} ${NICFILE} ${FAILFILE}
exit ${RETURN_CODE}