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|
#!/bin/sh
set -eu
version="${1-}"
kdumpdir="/var/lib/kdump"
[ -x /usr/sbin/mkinitramfs ] || exit 0
# passing the kernel version is required
if [ -z "${version}" ]; then
echo >&2 "W: kdump-tools: ${DPKG_MAINTSCRIPT_PACKAGE:-kdump-tools package} did not pass a version number"
exit 2
fi
if ! linux-version list | grep "${version}" > /dev/null ; then
exit 0
fi
# exit if kernel does not need an initramfs
if [ "${INITRD-}" = 'No' ]; then
exit 0
fi
# initramfs generation may fail, or include an inappropriate set of kernel
# modules in a chroot. Leave it to the target system to handle on reboot
if [ -x "$(command -v ischroot)" ] && ischroot; then
echo "W: kdump-tools: Executing in a chroot, skipping initramfs generation." >&2
exit 0;
fi
# avoid running multiple times
if [ -n "${DEB_MAINT_PARAMS-}" ]; then
eval set -- "$DEB_MAINT_PARAMS"
if [ -z "$1" ] || [ "$1" != "configure" ]; then
exit 0
fi
fi
if test ! -e /etc/initramfs-tools/initramfs.conf; then
echo "W: kdump-tools: /etc/initramfs-tools/initramfs.conf is missing." >&2
exit 2
fi
. /etc/initramfs-tools/initramfs.conf
for conf_file in /etc/initramfs-tools/conf.d/*; do
if test -f "$conf_file" && basename "$conf_file" | grep '^[[:alnum:]][[:alnum:]\._-]*$' | grep -qv '\.dpkg-.*$'; then
. "$conf_file"
fi
done
if test "${MODULES-most}" = most; then
# Switch from "most" to "dep" to reduce the size of the initramfs.
# "netboot" and "list" are expected to be already small enough.
KDUMP_MODULES=dep
fi
# We need a modified copy of initramfs-tools directory
# with MODULES=dep in initramfs.conf
if [ ! -d "$kdumpdir" ];then
mkdir -p "$kdumpdir"
fi
# Force re-creation of $kdumpdir/initramfs-tools
# in case the source has changed since last time
# we ran
if [ -d "$kdumpdir/initramfs-tools" ];then
rm -Rf $kdumpdir/initramfs-tools
fi
cp -pr /etc/initramfs-tools "$kdumpdir"
initramfsdir="$kdumpdir/initramfs-tools"
if test -n "${KDUMP_MODULES-}" -a "${KDUMP_MODULES-}" != "${MODULES}"; then
mkdir -p "$initramfsdir/conf.d"
echo "MODULES=${KDUMP_MODULES}" > "$initramfsdir/conf.d/zzz-kdump"
fi
# Add scsi_dh_* modules if in use otherwise
# kexec reboot on multipath will fail
# (LP: #1635597)
for I in $(lsmod | grep scsi_dh | cut -d" " -f1);do
echo "${I}" >> $initramfsdir/modules
done
# Mark our custom initramfs.conf to indicate that kdump-tools
# hooks/scripts should run/get included in our minimal initrd.
#
# Unfortunately, this is not true for Debian. OPTION=VAR is a
# control provided only by Ubuntu initramfs-tools, so this is
# innocuous /harmless on Debian - kept here for better code
# sync between Debian and Ubuntu. We needed special checks on
# hook/script in Debian to prevent them on regular initrd.
echo "KDUMP=y" >> $initramfsdir/initramfs.conf
# Cleaning up existing initramfs with same version
# as mkinitramfs do not have a force option
if [ -e "$kdumpdir/initrd.img-${version}" ];then
rm -f "$kdumpdir/initrd.img-${version}"
fi
# we're good - create initramfs.
echo "kdump-tools: Generating $kdumpdir/initrd.img-${version}"
INITRD_TMPDIR="$(mktemp -d)"
INITRD_FNAME="initrd.img-${version}"
INITRD_CMDLINE=" -k -d ${initramfsdir} -o ${kdumpdir}/${INITRD_FNAME}.new ${version}"
# NB: we *want* to split on spaces in INITRD_CMDLINE, so disable this check here
# shellcheck disable=SC2086
if TMPDIR=${INITRD_TMPDIR} mkinitramfs ${INITRD_CMDLINE} 1>/dev/null; then
mv "${kdumpdir}/${INITRD_FNAME}.new" "${kdumpdir}/${INITRD_FNAME}"
# Retain the initrd decompressed size in order potential users (like
# kdump memory estimator) are able to use that in calculations.
INITRD_DECOMPRESSED=$(find "${INITRD_TMPDIR}" -maxdepth 1 ! -path "${INITRD_TMPDIR}" -type d)
if [ -d "${INITRD_DECOMPRESSED}" ]; then
du -sm "${INITRD_DECOMPRESSED}" | awk '{print $1}' > "${kdumpdir}/size_${INITRD_FNAME}"
sync "${kdumpdir}/size_${INITRD_FNAME}"
fi
rm -rf "${INITRD_TMPDIR}"
else
mkinitramfs_return="$?"
rm -f "$kdumpdir/initrd.img-${version}.new"
echo "update-initramfs: failed for $kdumpdir/initrd.img-${version} with $mkinitramfs_return." >&2
rm -rf "${INITRD_TMPDIR}"
exit $mkinitramfs_return
fi
|
