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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
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9
zdev/dracut/95zdev/module-setup.sh
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@@ -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