157 lines
4.0 KiB
Bash
157 lines
4.0 KiB
Bash
#!/bin/sh
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#
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# dasd_reload
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# $Id: dasd_reload,v 1.2 2004/05/26 15:17:09 hare Exp $
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#
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# Deconfigures all active DASDs, unloads the modules
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# and activates the configured DASDs again.
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# Needed to establish an identical device mapping
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# in the installation system and in the running system.
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# All DASD access need to be cancelled prior to running
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# this script.
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#
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# Usage:
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# dasd_reload
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#
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# Return values:
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# 1 Cannot read /proc/modules
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# 2 Missing module programs
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# 3 /sys not mounted
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# 4 Failure on deactivate DASDs
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#
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if [ ! -r /proc/modules ]; then
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echo "Cannot read /proc/modules"
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exit 1
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fi
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if [ ! -x /usr/sbin/rmmod -o ! -x /usr/sbin/modprobe ]; then
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echo "Missing module programs"
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exit 2
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fi
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if [ ! -d /sys/bus ]; then
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echo "sysfs not mounted"
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exit 3
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fi
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let anymd=0
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if [ -f /proc/mdstat ]; then
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for mddevice in $(grep active /proc/mdstat | cut -f1 -d:); do
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mdadm -S /dev/${mddevice}
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let anymd=1
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done
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udevadm settle
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fi
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#
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# Setting HyperPAV alias devices offline
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#
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dasd_alias=
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let EXITRC=0
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for dev in /sys/bus/ccw/devices/*; do
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if [ -f ${dev}/use_diag ]; then
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read _online < ${dev}/online
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read _alias < ${dev}/alias
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if [ "$_online" -eq 1 -a "$_alias" -eq 1 ]; then
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echo "setting DASD HyperPAV alias $(basename ${dev}) offline"
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echo "0" > ${dev}/online
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read _online < ${dev}/online
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dasd_alias="${dasd_alias} $(basename ${dev})"
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if [ "$_online" -eq 1 ]; then
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echo "failure on setting DASD HyperPAV alias $(basename ${dev}) offline !"
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let EXITRC=4
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fi
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fi
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fi
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done
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#
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# Setting "normal" DASD and HyperPAV base devices offline
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#
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dasd_base=
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for dev in /sys/bus/ccw/devices/*; do
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if [ -f ${dev}/use_diag ]; then
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read _online < ${dev}/online
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read _alias < ${dev}/alias
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if [ "$_online" -eq 1 -a "$_alias" -eq 0 ]; then
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echo "setting DASD $(basename ${dev}) offline"
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echo "0" > ${dev}/online
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read _online < ${dev}/online
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dasd_base="${dasd_base} $(basename ${dev})"
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if [ "$_online" -eq 1 ]; then
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echo "failure on setting DASD $(basename ${dev}) offline !"
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let EXITRC=4
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fi
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fi
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fi
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done
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udevadm settle
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module_list=
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module_test_list="dasd_diag_mod dasd_eckd_mod dasd_fba_mod dasd_mod"
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for module in ${module_test_list}; do
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if grep -q "${module}" /proc/modules; then
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module_list="${module} ${module_list}"
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: Unloading ${module}
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/usr/sbin/rmmod ${module}
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fi
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done
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udevadm settle
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sleep 2
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if [ -d /etc/udev/rules.d ]; then
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cd /etc/udev/rules.d
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#
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# Re-activating "normal" DASD and HyperPAV base devices
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#
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# We need to move all the DASD udev rules out from /etc/udev/rules.d
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# because if we don't, then when the first DASD volume gets brought
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# back online, they are all brought back online, in a non-deterministic
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# order, not the numeric order we expect.
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#
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mv -i 41-dasd-*.rules 51-dasd-*.rules /tmp
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cd /tmp
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for dasd in ${dasd_base}; do
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for file in 41-dasd-*-${dasd}.rules 51-dasd-${dasd}.rules; do
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[ -f "${file}" ] || continue
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#
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# Special handling is needed for old udev rules that start with 51-
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# since the chzdev command won't look for that name
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#
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prefix="$(echo ${file} | cut -f1 -d-)"
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if [ "${prefix}" == "51" ]; then
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if [ -h /sys/bus/ccw/drivers/dasd-eckd/${dasd} ]; then
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mv -i ${file} 41-dasd-eckd-${dasd}.rules
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elif [ -h /sys/bus/ccw/drivers/dasd-fba/${dasd} ]; then
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mv -i ${file} 41-dasd-fba-${dasd}.rules
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else echo "DASD volume ${dasd} is neither an ECKD or FBA device."
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let EXITRC=4
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fi
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fi
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echo Activating ${dasd}
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mv -i "${file}" /etc/udev/rules.d/
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/usr/sbin/chzdev dasd --apply --configured -q --no-root-update ${dasd}
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lsdasd
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break
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done
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done
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#
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# Re-activating HyperPAV alias devices
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#
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for dasd in ${dasd_alias}; do
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for file in 41-dasd-*-${dasd}.rules 51-dasd-${dasd}.rules; do
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[ -f "${file}" ] || continue
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echo Activating ${dasd}
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mv -i "${file}" /etc/udev/rules.d/
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/usr/sbin/chzdev dasd --apply --configured -q --no-root-update ${dasd}
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break
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done
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done
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fi
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exit ${EXITRC}
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