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https://github.com/ibm-s390-linux/s390-tools.git
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54b3c9ef24
Bail out if the ngdump meta file could not be updated. Save the boot log also for normal exit. Signed-off-by: Mikhail Zaslonko <zaslonko@linux.ibm.com> Acked-by: Alexander Egorenkov <egorenar@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
111 lines
1.9 KiB
Bash
Executable File
111 lines
1.9 KiB
Bash
Executable File
#!/bin/sh
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#
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# Copyright IBM Corp. 2021
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#
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# s390-tools is free software; you can redistribute it and/or modify
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# it under the terms of the MIT license. See LICENSE for details.
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#
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OPTION=NGDUMP
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PREREQ="udev"
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prereqs()
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{
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echo "${PREREQ}"
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}
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case "${1}" in
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prereqs)
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prereqs
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exit 0
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;;
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esac
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. /scripts/functions
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. /conf/conf.d/ngdump
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MNTDIR="/ngdump"
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DUMP="dump.elf"
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META="ngdump.meta"
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VMCORE="/proc/vmcore"
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is_dump_part_ok()
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{
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findmnt "$MNTDIR" >/dev/null 2>&1 && [ -e "$MNTDIR/$META" ]
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}
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save_logs()
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{
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is_dump_part_ok || return
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[ -e "$VMCORE" ] && makedumpfile -f --dump-dmesg "$VMCORE" "$MNTDIR/crash.log"
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dmesg >"$MNTDIR/boot.log"
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}
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#
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# The following steps make the firmware IPL the production system again.
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# Otherwise, the firmware will boot the dumper again.
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#
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reipl()
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{
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dir=$(findmnt -n -o TARGET debugfs)
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if [ -z "$dir" ]; then
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dir=/sys/kernel/debug
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mount -t debugfs none "$dir"
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fi
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echo 1 > "$dir/zcore/reipl"
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sleep 5 # To give console enough time to display last messages
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halt
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}
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quit()
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{
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log_end_msg
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sync
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umount "$MNTDIR"
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reipl
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}
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bail_out()
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{
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log_failure_msg "$1"
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save_logs
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quit
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}
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save_meta()
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{
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local hash=$(sha256sum "$MNTDIR/$DUMP" | cut -f1 -d ' ')
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cat >"$MNTDIR/$META" <<EOF
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version=1
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file=$DUMP
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sha256sum=$hash
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EOF
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}
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log_begin_msg "NGDump"
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[ -e "$NGDUMP_DEVICE" ] ||
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{ bail_out "Dump partition device '$NGDUMP_DEVICE' not found"; }
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mkdir "$MNTDIR" && mount -t ext4 "$NGDUMP_DEVICE" "$MNTDIR"
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is_dump_part_ok || { bail_out "Dump partition not found"; }
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#
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# We must save the dump as ELF format, because
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# kdump compressed format is not supported by zgetdump yet
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#
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logsave "$MNTDIR/makedumpfile.log" makedumpfile -f -E --message-level 7 -d 31 "$VMCORE" "$MNTDIR/$DUMP"
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[ $? -eq 0 ] || { bail_out "makedumpfile failed"; }
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#
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# Create a file containing meta information for zgetdump
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#
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save_meta
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[ $? -eq 0 ] || { bail_out "Could not update $META"; }
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save_logs
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quit
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