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zdev/dracut: add field debugging capabilities with logging

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Additional debugging output can be generated with e.g. dracut option
"--stdlog 5" (or short -L5). It shows the chzdev export result, the output
of chzdev imports, and an overview of the resulting persistent config
within the initrd.
On systems, which default to using dracut option "--quiet", you might need
an additional "--verbose" to counter "--quiet" so -L5 has effect.
Typically combined with "--debug" to get a shell trace from building an
initrd (Note: --debug does not increase the log levels).

Github-ID: https://github.com/ibm-s390-linux/s390-tools/pull/158
Reviewed-by: Alexander Egorenkov <egorenar@linux.ibm.com>
Reviewed-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Acked-by: Vineeth Vijayan <vneethv@linux.ibm.com>
Acked-by: Peter Oberparleiter <oberpar@linux.ibm.com>
Signed-off-by: Steffen Maier <maier@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Steffen Maier
2023-09-04 18:27:51 +02:00
committed by Jan Höppner
parent 7ecfe2353f
commit 63f31bf73e
2 changed files with 16 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

13
zdev/dracut/95zdev-kdump/module-setup.sh
View File

@@ -25,7 +25,7 @@ check() {
zdev_is_kdump || return 1
# Ensure that required tools are available
require_binaries chzdev || return 1
require_binaries chzdev lszdev || return 1
return 0
}
@@ -61,8 +61,8 @@ install() {
# many zFCP LUNs
inst_dir /etc/modprobe.d
chzdev zfcp --type "allow_lun_scan=0" --persistent \
--base "/etc=${initdir:?}/etc" --yes --quiet --no-root-update \
--force >/dev/null
--base "/etc=${initdir:?}/etc" --yes --no-root-update \
--force 2>&1 | ddebug
# drop /etc/zfcp.conf from dracut module 95zfcp
echo "rd.zfcp.conf=0" > "$initdir/etc/cmdline.d/00-no-zfcp-conf.conf"
# => only activate individual zfcp paths found as required below
@@ -81,9 +81,14 @@ install() {
for_each_host_dev_and_slaves_all check_zdev
sed -i -e 's/^\[active /\[persistent /' "$_tempfile"
ddebug < "$_tempfile"
# Apply via --import to prevent other devices from being configured
chzdev --import "$_tempfile" --persistent --base "/etc=$initdir/etc" \
--yes --quiet --no-root-update --force >/dev/null
--yes --no-root-update --force 2>&1 | ddebug
lszdev --configured --persistent --info \
--base "/etc=$initdir/etc" 2>&1 | ddebug
rm -f "$_tempfile"

9
zdev/dracut/95zdev/module-setup.sh
View File

@@ -90,16 +90,21 @@ install() {
--quiet 2>/dev/null >> "$_tempfile"
done
ddebug < "$_tempfile"
# Apply via --import to prevent other devices from being configured
chzdev --import "$_tempfile" --persistent --base "/etc=${initdir:?}/etc" \
--yes --quiet --no-root-update --force >/dev/null
--yes --no-root-update --force 2>&1 | ddebug
# Apply site-specific configurations via --import
for (( site=0; site<10; site++ ))
do
chzdev --import "$_tempfile" --persistent --base "/etc=$initdir/etc" \
--site $site --yes --quiet --no-root-update --force >/dev/null
--site $site --yes --no-root-update --force 2>&1 | ddebug
done
lszdev --configured --persistent --info \
--base "/etc=$initdir/etc" 2>&1 | ddebug
rm -f "$_tempfile"
return 0