Since we automatically load device drivers in linuxrc.s390 by means of
udev, loader can no longer explicitly load the DASD device driver module
and pass the module option DASD=... in order to activate DASDs
based on the user specification in parm/conf file or interactively in
linuxrc.s390.
This patch does the necessary work in linuxrc.s390 including full
support for usability features such as restarting configuration
without reboot.
In a next step we could remove the DASD module stuff from loader.
It is recommended to use /dev/disk/by-* instead of /dev/dasdXY.
---
loader/linuxrc.s390 | 139 ++++++++++++++++++++++++++++++++++++++++----------
1 files changed, 111 insertions(+), 28 deletions(-)
diff --git a/loader/linuxrc.s390 b/loader/linuxrc.s390
index d32ee9b..6c26483 100644
--- a/loader/linuxrc.s390
+++ b/loader/linuxrc.s390
@@ -162,6 +162,17 @@ function startinetd()
fi
}
+# prints a canonocalized device bus ID for a given devno of any format
+function canonicalize_devno()
+{
+ case ${#1} in
+ 3) echo "0.0.0${1}" ;;
+ 4) echo "0.0.${1}" ;;
+ *) echo "${1}" ;;
+ esac
+ return 0
+}
+
# read file from CMS and write it to /tmp
function readcmsfile() # $1=dasdport $2=filename
{
@@ -182,11 +193,7 @@ function readcmsfile() # $1=dasdport $2=filename
sleep 1
# precondition: dasd_eckd_mod driver incl. dependencies loaded,
# dasd_mod must be loaded without setting any DASD online
- if [ ${#1} == 3 ]; then
- dev="0.0.0${1}"
- elif [ ${#1} == 4 ]; then
- dev="0.0.${1}"
- fi
+ dev=$(canonicalize_devno $1)
if ! sysecho /sys/bus/ccw/devices/$dev/online 1; then
echo $"DASD $dev could not be set online"
return 1
@@ -200,8 +207,8 @@ function readcmsfile() # $1=dasdport $2=filename
return 1
fi
udevadm settle
- # consequences of no more module unload: loader/anaconda can no longer
- # use DASD option to online DASDs and set other DASD parameters!
+ # consequences of no more module unload: loader can no longer
+ # use DASD module option to online DASDs and set other DASD parameters!
}
# adaption of the same function in init.c (udevd gets started later)
@@ -796,6 +803,13 @@ function rollback_config() {
[ -z "$vswitch_was_set" ] && unset VSWITCH
# prevent possible reuse of an old DEVICE on restarting dialog
unset DEVICE
+ # set activated DASDs offline again
+ local dasd
+ while read dasd < /proc/dasd/devices; do
+ dasd=${dasd%%(*}
+ sysecho /sys/bus/ccw/devices/$dasd/online 0
+ done
+ udevadm settle
}
### workflow helper functions
@@ -2445,10 +2459,31 @@ function parse_dasd() {
local dasditem
local allgood="yes"
while read dasditem; do
+ unset range features range lo hi rangegood \
+ attrs devno lodevno hidevno devbusid sys
case $dasditem in
- autodetect|probeonly|nopav) continue ;;
+ autodetect)
+ [ -z "$handle" ] && continue
+ local cio_wc=$(wc -c /proc/cio_ignore)
+ read cio_wc_bytes cio_wc_filename cio_wc_foo <<< "$cio_wc"
+ if [ "$cio_wc_bytes" != "0" ]; then
+ echo $"Note: There is a device blacklist active! Only activating visible DASDs."
+ fi
+ local sys
+ while read sys; do
+ if ! sysecho $sys/online 1; then
+ echo $"Could not set DASD ${sys##*/} online"
+ fi
+ done < <(find /sys/bus/ccw/drivers/dasd-eckd/ -name "*.?.????" 2>/dev/null;\
+ find /sys/bus/ccw/drivers/dasd-fba/ -name "*.?.????" 2>/dev/null)
+ ;;
+ probeonly|nopav|nofcx)
+ if [ -z "$handle" ]; then
+ echo $"DASD option $dasditem not supported by installer"
+ fi
+ ;;
"") continue ;; # empty range
- *) local range features
+ *) local range features rangegood="yes"
IFS='('
read range features <<< "$dasditem"
unset IFS
@@ -2456,8 +2491,10 @@ function parse_dasd() {
local lo=${range%%-*}
[[ "$lo" =~ (^[[:xdigit:]]+\\.[0-3]\\.[[:xdigit:]]{4}$)|(^[[:xdigit:]]{3,4}$) ]]
case $? in
- 0) ;; # string matched the pattern
+ 0) # string matched the pattern
+ lo=$(canonicalize_devno $lo) ;;
1) # string did not match the pattern
+ rangegood="no"
if [ -z "$handle" ]; then
echo $"Incorrect format for lower bound of DASD range $range: $lo"
allgood="no"
@@ -2470,8 +2507,16 @@ function parse_dasd() {
local hi=${range##*-}
[[ "$hi" =~ (^[[:xdigit:]]+\\.[0-3]\\.[[:xdigit:]]{4}$)|(^[[:xdigit:]]{3,4}$) ]]
case $? in
- 0) ;; # string matched the pattern
+ 0) # string matched the pattern
+ hi=$(canonicalize_devno $hi)
+ if [ "${lo%.*}" != "${hi%.*}" ]; then
+ echo $"Prefixes of DASD range $range do not match: ${lo%.*} != ${hi%.*}"
+ rangegood="no"
+ allgood="no"
+ fi
+ ;;
1) # string did not match the pattern
+ rangegood="no"
if [ -z "$handle" ]; then
echo $"Incorrect format for upper bound of DASD range $range: $hi"
allgood="no"
@@ -2481,10 +2526,12 @@ function parse_dasd() {
*) echo "l.$LINENO: unexpected return code of regex match operator =~, code needs to be fixed" 1>&2 ;;
esac
fi
- if [ "$handle" = "yes" ]; then
+ if [ "$rangegood" = "yes" -a "$handle" = "yes" ]; then
if ! sysecho /proc/cio_ignore "free $range"; then
echo $"Could not free DASD device $range from device blacklist"
allgood="no"
+ else
+ udevadm settle
fi
fi
if [ "${features//*)/}" != "" ]; then
@@ -2493,26 +2540,58 @@ function parse_dasd() {
allgood="no"
fi
fi
- [ -z "$features" ] && continue
- features="${features%)}"
- while read feature; do
- case $feature in
- ro|diag|erplog) continue ;;
- *) if [ -z "$handle" ]; then
- echo $"Unknown DASD feature for device range $range: $feature"
- allgood="no"
- fi
- ;;
- esac
- done < <(echo $features | sed 's/:/\n/g')
+ local attrs=""
+ if [ -n "$features" ]; then
+ features="${features%)}"
+ while read feature; do
+ case $feature in
+ ro) attrs=$attrs" readonly" ;;
+ diag) attrs=$attrs" use_diag" ;;
+ erplog|failfast) attrs=$attrs" "$feature ;;
+ *) if [ -z "$handle" ]; then
+ echo $"Unknown DASD feature for device range $range: $feature"
+ allgood="no"
+ fi
+ ;;
+ esac
+ done < <(echo $features | sed 's/:/\n/g')
+ fi
+ [ "$rangegood" = "yes" ] || continue
+ [ "$handle" = "yes" ] || continue
+ # now apply $attrs and set DASDs $lo to $hi online
+ [ -z "$hi" ] && hi=$lo
+ local devno lodevno=$((0x${lo##*.})) hidevno=$((0x${hi##*.}))
+ for ((devno=$lodevno; $devno <= $hidevno; ++devno)); do
+ local devbusid=$(printf "%s.%04x" ${lo%.*} $devno)
+ local sys="/sys/bus/ccw/devices/"$devbusid
+ for attr in $attrs; do
+ if [ "$attr" = "use_diag" ]; then
+ # diag discipline cannot be auto-loaded
+ modprobe dasd_diag_mod
+ fi
+ if [ ! -f $sys/$attr ]; then
+ echo $"DASD $devbusid does not provide attribute $attr"
+ continue
+ fi
+ if ! sysecho $sys/$attr 1; then
+ echo $"Could not set attribute $attr for DASD $devbusid"
+ fi
+ done
+ if [ ! -f $sys/online ]; then
+ echo $"DASD $devbusid not found"
+ continue
+ fi
+ if ! sysecho $sys/online 1; then
+ echo $"Could not set DASD $devbusid online"
+ fi
+ done
;;
esac
done < <(echo $DASD | sed 's/,/\n/g')
if [ "$handle" = "yes" ]; then
udevadm settle
- # even though the device might now be online, some of its
- # sysfs attributes might not yet be available
- sleep 1
+ echo $"Activated DASDs:"
+ cat /proc/dasd/devices | sed -e 's/ at ([^)]*) is//' -e 's/ at/,/'
fi
if [ "$allgood" = "yes" ]; then
return 0
@@ -2547,7 +2626,7 @@ function helptext_dasd() {
}
function exception_dasd() {
- [ -z "$DASD" ] && break
+ [ -z "$DASD" ] && DASD="autodetect"
}
function do_dasd() {
@@ -2704,6 +2783,10 @@ function final_check() {
route -n
fi
;;
+ d) # show active DASDs with some useful details
+ echo $"Activated DASDs:"
+ cat /proc/dasd/devices|sed -e 's/ at ([^)]*) is//' -e 's/ at/,/'
+ ;;
r) break ;;
s) echo $"Enter 'exit' at the shell prompt to get back to the installation dialog."
/bin/bash
--
1.6.4
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