This is a batch update done with:
shfmt -s -w mkfadumprd mkdumprd kdumpctl *-module-setup.sh
Clean up code style and reduce code base size, no behaviour change.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
Declare and assign separately to avoid masking return values:
https://github.com/koalaman/shellcheck/wiki/SC2155
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
kdumpctl, mkdumprd, *-module-setup.sh only target bash, since they
only run in first kernel and depend on dracut, and dracut depends
on bash. So use '[[ ]]' to replace '[ ]'.
This is a batch update done with following command:
`sed -i -e 's/\(\s\)\[\s\([^]]*\)\s\]/\1\[\[\ \2 \]\]/g' kdumpctl, mkdumprd, *-module-setup.sh`
and replaced [ ... -a ... ] with [[ ... ]] && [[ ... ]] manually.
See https://tldp.org/LDP/abs/html/testconstructs.html for more details
on '[[ ]]', it's more versatile, safer, and slightly faster than '[ ]'.
This will also help shfmt to clean up the code in later commits.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
To make arguments list work as expected, array is preferred.
Check following link for details:
https://github.com/koalaman/shellcheck/wiki/SC2089
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
After fadump embedded the fadump initramfs in the normal initramfs,
kdumpctl will mistakenly rebuild the initramfs everytime.
kdumpctl checks the hostonly-kernel-modules.txt file in initramfs
to check if required drivers are included, but the normal initramfs
is built in non-hostonly mode, so it doesn't have a
hostonly-kernel-modules.txt file. The check will always fail.
So let mkfadumprd make a copy of the hostonly-kernel-modules.txt in the
fadump initramfs and let kdumpctl check that file instead.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Hari Bathini <hbathini@linux.ibm.com>
In case of fadump, the initramfs image has to be built to boot into
the production environment as well as to offload the active crash dump
to the specified dump target (for boot after crash). As the same image
would be used for both boot scenarios, it could not be built optimally
while accommodating both cases.
Use --include to include the initramfs image built for offloading
active crash dump to the specified dump target. Also, introduce a new
out-of-tree dracut module (99zz-fadumpinit) that installs a customized
init program while moving the default /init to /init.dracut. This
customized init program is leveraged to isolate fadump image within
the default initramfs image by kicking off default boot process
(exec /init.dracut) for regular boot scenario and activating fadump
initramfs image, if the system is booting after a crash.
If squash is available, ensure default initramfs image is also built
with squash module to reduce memory consumption in capture kernel.
Signed-off-by: Hari Bathini <hbathini@linux.ibm.com>
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Kairui Song <kasong@redhat.com>
Kairui Song
Hari Bathini