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