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initramfs: Regenerate initrd using host-only mode on file-based trigger #170

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Merged
jslobodzian merged 2 commits into from
Oct 2, 2020
Merged

initramfs: Regenerate initrd using host-only mode on file-based trigger #170

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b828bee
initramfs: Always use host-only mode
christopherco Oct 2, 2020
bfcb8f6
Reword comment block
christopherco Oct 2, 2020
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22 changes: 20 additions & 2 deletions SPECS/initramfs/initramfs.spec
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Original file line number Diff line number Diff line change
@@ -1,7 +1,7 @@
Summary: initramfs
Name: initramfs
Version: 2.0
Release: 5%{?dist}
Release: 6%{?dist}
Source0: fscks.conf
License: Apache License
Group: System Environment/Base
Expand Down Expand Up @@ -66,6 +66,22 @@ mkdir -p %{_localstatedir}/lib/rpm-state/initramfs \
touch %{_localstatedir}/lib/rpm-state/initramfs/regenerate \
echo "initramfs (re)generation" %* >&2

# kdump currently uses the host system's initrd when enrolling a crash kernel
# and initrd. There is a limitation where the kdump initrd must be generated
# with dracut in "host-only" mode.
#
# The -k option forces "host-only" initrd build for the specified kernel version.
# The -q option suppresses verbose output
#
# If mkinitrd is called without <image> and <kernel-version> parameters, it will
# default to invoking dracut in "host-mode" mode on every kernel version it can
# find in /boot.
#
# If mkinitrd is called with <image> and <kernel-version> parameters, it will
# default to invoking dracut in "generic host" mode to create an initrd.
#
# So in order to be compatible with kdump, we need to make sure to add the -k
# option when invoking mkinitrd with an explicit <image> and <kernel version>
%define file_trigger_action() \
cat > /dev/null \
if [ -f %{_localstatedir}/lib/rpm-state/initramfs/regenerate ]; then \
Expand All @@ -74,7 +90,7 @@ if [ -f %{_localstatedir}/lib/rpm-state/initramfs/regenerate ]; then \
elif [ -d %{_localstatedir}/lib/rpm-state/initramfs/pending ]; then \
for k in `ls %{_localstatedir}/lib/rpm-state/initramfs/pending/`; do \
echo "(re)generate initramfs for $k," %* >&2 \
mkinitrd -q /boot/initrd.img-$k $k \
mkinitrd -q /boot/initrd.img-$k $k -k \
done; \
fi \
%removal_action
Expand Down Expand Up @@ -111,6 +127,8 @@ echo "initramfs" %{version}-%{release} "postun" >&2
%dir %{_localstatedir}/lib/initramfs/kernel

%changelog
* Thu Oct 01 2020 Chris Co <chrco@microsoft.com> 2.0-6
- Update file-triggered initrd generation to workaround kdump initrd limitations
* Tue Sep 03 2019 Mateusz Malisz <mamalisz@microsoft.com> 2.0-5
- Initial CBL-Mariner import from Photon (license: Apache2).
* Mon Aug 27 2018 Dheeraj Shetty <dheerajs@vmware.com> 2.0-4
Expand Down