integ/tools/kexec-tools/files/kdump-lib-initramfs.sh
M. Vefa Bicakci 7e10236038 Update kexec-tools/makedumpfile to support v5.10 kernel
This patch updates kexec-tools from 2.0.15 to 2.0.21 (and its supporting
software package makedumpfile from 1.6.2 to 1.6.9) for compatibility
with the newer v5.10 kernel.

This commit clones the kexec-tools package's supporting files from
commit 26a7a543427eac59ed39728466f3d95d320f735a in the CentOS RPM
packaging git repository. Links for reference:

- 26a7a54342
- 26a7a54342

Please note that this patch causes the build system to pull in and
extract an SRPM file to acquire:
  kdump-anaconda-addon-003-29-g4c517c5.tar.gz

This is done for security, because the only public reference to commit
4c517c5 is on a Red Hat developer's personal Github account:
  https://github.com/ryncsn/kdump-anaconda-addon/commits/rhel-7

kexec-tools package's supporting files cloned by this commit trigger a
large number of shell script linting errors. Given that the shell
scripts in question are inherited from upstream (i.e., CentOS 7), the
"files" directory of this package is excluded from automated linting via
the changes in tox.ini.

Verification: A kexec-tools RPM package built with this commit was
installed onto an existing StarlingX system. A vmcore file was
succesfully collected from a kernel crash triggered with
/proc/sysrq-trigger. A recent version of the crash utility was found to
succesfully parse the collected vmcore file.

Credits: Thanks to Jiping Ma for helping with cleaning up and publishing
an earlier version of this patch.

Story: 2008921
Task: 43040

Depends-On: https://review.opendev.org/c/starlingx/tools/+/805127

Signed-off-by: Jiping Ma <jiping.ma2@windriver.com>
Signed-off-by: M. Vefa Bicakci <vefa.bicakci@windriver.com>
Change-Id: Idc4e523610e4c09259300c8b67ea5e0fbe59c611
2021-10-19 14:29:42 -04:00

166 lines
4.5 KiB
Bash
Executable File

# These variables and functions are useful in 2nd kernel
. /lib/kdump-lib.sh
KDUMP_PATH="/var/crash"
CORE_COLLECTOR=""
DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 1 -d 31"
DMESG_COLLECTOR="/sbin/vmcore-dmesg"
DEFAULT_ACTION="systemctl reboot -f"
DATEDIR=`date +%Y-%m-%d-%T`
HOST_IP='127.0.0.1'
DUMP_INSTRUCTION=""
SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
KDUMP_SCRIPT_DIR="/kdumpscripts"
DD_BLKSIZE=512
FINAL_ACTION="systemctl reboot -f"
KDUMP_CONF="/etc/kdump.conf"
KDUMP_PRE=""
KDUMP_POST=""
NEWROOT="/sysroot"
get_kdump_confs()
{
local config_opt config_val
while read config_opt config_val;
do
# remove inline comments after the end of a directive.
config_val=$(strip_comments $config_val)
case "$config_opt" in
path)
KDUMP_PATH="$config_val"
;;
core_collector)
[ -n "$config_val" ] && CORE_COLLECTOR="$config_val"
;;
sshkey)
if [ -f "$config_val" ]; then
SSH_KEY_LOCATION=$config_val
fi
;;
kdump_pre)
KDUMP_PRE="$config_val"
;;
kdump_post)
KDUMP_POST="$config_val"
;;
fence_kdump_args)
FENCE_KDUMP_ARGS="$config_val"
;;
fence_kdump_nodes)
FENCE_KDUMP_NODES="$config_val"
;;
default)
case $config_val in
shell)
DEFAULT_ACTION="kdump_emergency_shell"
;;
reboot)
DEFAULT_ACTION="systemctl reboot -f"
;;
halt)
DEFAULT_ACTION="halt"
;;
poweroff)
DEFAULT_ACTION="poweroff"
;;
dump_to_rootfs)
DEFAULT_ACTION="dump_to_rootfs"
;;
esac
;;
esac
done < $KDUMP_CONF
if [ -z "$CORE_COLLECTOR" ]; then
CORE_COLLECTOR="$DEFAULT_CORE_COLLECTOR"
if is_ssh_dump_target || is_raw_dump_target; then
CORE_COLLECTOR="$CORE_COLLECTOR -F"
fi
fi
}
# dump_fs <mount point| device>
dump_fs()
{
local _dev=$(findmnt -k -f -n -r -o SOURCE $1)
local _mp=$(findmnt -k -f -n -r -o TARGET $1)
echo "kdump: dump target is $_dev"
if [ -z "$_mp" ]; then
echo "kdump: error: Dump target $_dev is not mounted."
return 1
fi
# Remove -F in makedumpfile case. We don't want a flat format dump here.
[[ $CORE_COLLECTOR = *makedumpfile* ]] && CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e "s/-F//g"`
echo "kdump: saving to $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/"
mount -o remount,rw $_mp || return 1
mkdir -p $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR || return 1
save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/"
echo "kdump: saving vmcore"
$CORE_COLLECTOR /proc/vmcore $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete || return 1
mv $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore-incomplete $_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/vmcore
sync
echo "kdump: saving vmcore complete"
# improper kernel cmdline can cause the failure of echo, we can ignore this kind of failure
return 0
}
save_vmcore_dmesg_fs() {
local _dmesg_collector=$1
local _path=$2
echo "kdump: saving vmcore-dmesg.txt"
$_dmesg_collector /proc/vmcore > ${_path}/vmcore-dmesg-incomplete.txt
_exitcode=$?
if [ $_exitcode -eq 0 ]; then
mv ${_path}/vmcore-dmesg-incomplete.txt ${_path}/vmcore-dmesg.txt
# Make sure file is on disk. There have been instances where later
# saving vmcore failed and system rebooted without sync and there
# was no vmcore-dmesg.txt available.
sync
echo "kdump: saving vmcore-dmesg.txt complete"
else
echo "kdump: saving vmcore-dmesg.txt failed"
fi
}
dump_to_rootfs()
{
echo "Kdump: trying to bring up rootfs device"
systemctl start dracut-initqueue
echo "Kdump: waiting for rootfs mount, will timeout after 90 seconds"
systemctl start sysroot.mount
dump_fs $NEWROOT
}
kdump_emergency_shell()
{
echo "PS1=\"kdump:\\\${PWD}# \"" >/etc/profile
/bin/dracut-emergency
rm -f /etc/profile
}
do_default_action()
{
echo "Kdump: Executing default action $DEFAULT_ACTION"
eval $DEFAULT_ACTION
}
do_final_action()
{
eval $FINAL_ACTION
}