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zdev/dracut: fix to not depend on existing chzdev persistent config

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Dracut knows exactly what dependencies it needs. Do not break it by
accidentally missing parts in the chzdev persistent configuration
(/etc/udev/rules.d/41-*.rules). Depicted as mathematical sets:

+-------------------------------+
| active                        |
|            +---------------------------------+
|            |                  |   persistent |
|   +------------------------------------+     |
|   |      root / kdump dependencies     |     |
|   | was    |                  |        |     |
|   | missing|   zdev so far    |   DR   |     |
|   +------------------------------------+     |
|            |                  |              |
+-------------------------------+              |
             |                                 |
             +---------------------------------+

Github-ID: https://github.com/ibm-s390-linux/s390-tools/pull/158
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
2023-01-23 15:57:08 +01:00
committed by Jan Höppner
parent d96767ee45
commit 7e8126704b
1 changed files with 6 additions and 2 deletions
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8
zdev/dracut/95zdev/module-setup.sh
View File

@@ -30,6 +30,7 @@ check() {
# Ensure that required tools are available
require_binaries chzdev lszdev /lib/s390-tools/zdev_id || return 1
require_binaries sed || return 1
return 0
}
@@ -75,10 +76,13 @@ install() {
cd -P /sys/dev/block/"$_dev" && echo "$PWD"
)
_bdevpath=/dev/${_devsysfs##*/}
chzdev --export - --persistent --by-node "$_bdevpath" --quiet \
--type 2>/dev/null >> "$_tempfile"
chzdev --export - --active --by-node "$_bdevpath" --quiet \
2>/dev/null >> "$_tempfile"
#--type # needs a change in chzdev to not have subsequent
# import bail out on unknown type properties
}
for_each_host_dev_and_slaves_all check_zdev
sed -i -e 's/^\[active /\[persistent /' "$_tempfile"
chzdev --export - --persistent --by-attrib "zdev:early=1" --quiet \
--type 2>/dev/null >> "$_tempfile"