32692de010
Being extra cautious to prevent hangs. Signed-off-by: Guilherme G. Piccoli <gpiccoli@igalia.com>
67 lines
2.1 KiB
Bash
67 lines
2.1 KiB
Bash
#!/bin/sh
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#
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# SPDX-License-Identifier: LGPL-2.1+
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#
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# Copyright (c) 2022 Valve.
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# Maintainer: Guilherme G. Piccoli <gpiccoli@igalia.com>
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#
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# Script for effectively collecting the core dump/dmesg from
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# within a minimal initrd - part of the kdump/pstore tooling.
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# The most fail-prone operations are guarded with conditionals to
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# bail in case we indeed fail - worst thing here would be to have
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# a bad condition and get stuck in this minimal initrd with no
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# output for the user. Notice that the script is used in both
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# dracut and initcpio cases.
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#
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#ENTRY POINT
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# Bail out in case we don't have a vmcore, i.e. either we're not kdumping
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# or something is pretty wrong and we wouldn't be able to progress.
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VMCORE="/proc/vmcore"
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if [ ! -f "$VMCORE" ]; then
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reboot -f
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fi
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# We have a more controlled situation with regards the config
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# files here, since we manually added them in the initrd and
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# the validation also happened there, during such addition,
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# hence not requiring checks here.
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for cfg in "/usr/share/kdump.d"/*; do
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. "$cfg"
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done
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KDUMP_TIMESTAMP=$(date -u +"%Y%m%d%H%M")
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MOUNT_POINT="$(cat /usr/lib/kdump/kdump.mnt)"
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BASE_FOLDER="$(cat /usr/lib/kdump/kdump.dir)"
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KDUMP_FOLDER="/kdump_path/${BASE_FOLDER}/crash/${KDUMP_TIMESTAMP}"
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# Check if the device node exists - or else, just bails-out.
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if [ ! -e "${MOUNT_POINT}" ]; then
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reboot -f
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fi
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mkdir -p "/kdump_path"
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if ! mount "${MOUNT_POINT}" /kdump_path; then
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reboot -f
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fi
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mkdir -p "${KDUMP_FOLDER}"
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# we want to split on spaces, it's a set of parameters!
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# shellcheck disable=SC2086
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/usr/bin/makedumpfile ${MAKEDUMPFILE_DMESG_CMD} $VMCORE "${KDUMP_FOLDER}/dmesg.txt"
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sync "${KDUMP_FOLDER}/dmesg.txt"
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if [ "${FULL_COREDUMP}" -ne 0 ]; then
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# shellcheck disable=SC2086
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/usr/bin/makedumpfile ${MAKEDUMPFILE_COREDUMP_CMD} $VMCORE "${KDUMP_FOLDER}/vmcore.compressed"
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sync "${KDUMP_FOLDER}/vmcore.compressed"
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fi
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umount "${MOUNT_POINT}"
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sync
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reboot -f
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#END
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