dracut-kdump.sh: make it POSIX compatible
POSIX doesn't support keyword `local`, so this commit reduced variable usage.
Heredoc ("<<<") operation is also not supported, so kdump.conf is now pre-parse
into a temp file. Also fixes many POSIX syntax errors.
Signed-off-by: Kairui Song <kasong@redhat.com>
Acked-by: Philipp Rudo <prudo@redhat.com>
This commit is contained in:
Kairui Song
parent
725027b735
commit
b1339c3b8a
260
dracut-kdump.sh
260
dracut-kdump.sh
@ -8,8 +8,7 @@
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. /lib/kdump-lib-initramfs.sh
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#initiate the kdump logger
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dlog_init
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if [ $? -ne 0 ]; then
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if ! dlog_init; then
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echo "failed to initiate the kdump logger."
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exit 1
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fi
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@ -20,7 +19,7 @@ CORE_COLLECTOR=""
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DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 7 -d 31"
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DMESG_COLLECTOR="/sbin/vmcore-dmesg"
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FAILURE_ACTION="systemctl reboot -f"
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DATEDIR=`date +%Y-%m-%d-%T`
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DATEDIR=$(date +%Y-%m-%d-%T)
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HOST_IP='127.0.0.1'
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DUMP_INSTRUCTION=""
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SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa"
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@ -30,6 +29,7 @@ KDUMP_PRE=""
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KDUMP_POST=""
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NEWROOT="/sysroot"
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OPALCORE="/sys/firmware/opal/mpipl/core"
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KDUMP_CONF_PARSED="/tmp/kdump.conf.$$"
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# POSIX doesn't have pipefail, only apply when using bash
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# shellcheck disable=SC3040
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@ -37,10 +37,11 @@ OPALCORE="/sys/firmware/opal/mpipl/core"
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DUMP_RETVAL=0
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kdump_read_conf > $KDUMP_CONF_PARSED
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get_kdump_confs()
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{
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while read -r config_opt config_val;
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do
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while read -r config_opt config_val; do
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# remove inline comments after the end of a directive.
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case "$config_opt" in
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path)
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@ -99,7 +100,7 @@ get_kdump_confs()
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esac
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;;
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esac
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done <<< "$(kdump_read_conf)"
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done < "$KDUMP_CONF_PARSED"
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if [ -z "$CORE_COLLECTOR" ]; then
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CORE_COLLECTOR="$DEFAULT_CORE_COLLECTOR"
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@ -120,56 +121,58 @@ save_log()
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chmod 600 $KDUMP_LOG_FILE
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}
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# dump_fs <mount point>
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# $1: dump path, must be a mount point
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dump_fs()
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{
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local _exitcode
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local _mp=$1
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local _op=$(get_mount_info OPTIONS target $_mp -f)
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ddebug "dump_fs _mp=$_mp _opts=$_op"
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ddebug "dump_fs _mp=$1"
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if ! is_mounted "$_mp"; then
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dinfo "dump path \"$_mp\" is not mounted, trying to mount..."
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mount --target $_mp
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if [ $? -ne 0 ]; then
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derror "failed to dump to \"$_mp\", it's not a mount point!"
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if ! is_mounted "$1"; then
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dinfo "dump path '$1' is not mounted, trying to mount..."
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if ! mount --target "$1"; then
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derror "failed to dump to '$1', it's not a mount point!"
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return 1
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fi
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fi
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# Remove -F in makedumpfile case. We don't want a flat format dump here.
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[[ $CORE_COLLECTOR = *makedumpfile* ]] && CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e "s/-F//g"`
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case $CORE_COLLECTOR in
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*makedumpfile* )
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CORE_COLLECTOR=$(echo "$CORE_COLLECTOR" | sed -e "s/-F//g")
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;;
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esac
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local _dump_path=$(echo "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/" | tr -s /)
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dinfo "saving to $_dump_path"
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_dump_fs_path=$(echo "$1/$KDUMP_PATH/$HOST_IP-$DATEDIR/" | tr -s /)
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dinfo "saving to $_dump_fs_path"
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# Only remount to read-write mode if the dump target is mounted read-only.
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if [[ "$_op" = "ro"* ]]; then
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dinfo "Remounting the dump target in rw mode."
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mount -o remount,rw $_mp || return 1
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fi
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_dump_mnt_op=$(get_mount_info OPTIONS target "$1" -f)
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case $_dump_mnt_op in
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ro* )
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dinfo "Remounting the dump target in rw mode."
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mount -o remount,rw "$1" || return 1
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;;
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esac
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mkdir -p $_dump_path || return 1
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mkdir -p "$_dump_fs_path" || return 1
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save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_dump_path"
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save_opalcore_fs "$_dump_path"
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save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_dump_fs_path"
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save_opalcore_fs "$_dump_fs_path"
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dinfo "saving vmcore"
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$CORE_COLLECTOR /proc/vmcore $_dump_path/vmcore-incomplete
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_exitcode=$?
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if [ $_exitcode -eq 0 ]; then
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mv $_dump_path/vmcore-incomplete $_dump_path/vmcore
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$CORE_COLLECTOR /proc/vmcore "$_dump_fs_path/vmcore-incomplete"
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_dump_exitcode=$?
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if [ $_dump_exitcode -eq 0 ]; then
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mv "$_dump_fs_path/vmcore-incomplete" "$_dump_fs_path/vmcore"
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sync
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dinfo "saving vmcore complete"
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else
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derror "saving vmcore failed, _exitcode:$_exitcode"
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derror "saving vmcore failed, exitcode:$_dump_exitcode"
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fi
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dinfo "saving the $KDUMP_LOG_FILE to $_dump_path/"
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dinfo "saving the $KDUMP_LOG_FILE to $_dump_fs_path/"
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save_log
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mv $KDUMP_LOG_FILE $_dump_path/
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if [ $_exitcode -ne 0 ]; then
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mv "$KDUMP_LOG_FILE" "$_dump_fs_path/"
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if [ $_dump_exitcode -ne 0 ]; then
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return 1
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fi
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@ -177,16 +180,13 @@ dump_fs()
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return 0
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}
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# $1: dmesg collector
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# $2: dump path
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save_vmcore_dmesg_fs() {
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local _dmesg_collector=$1
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local _path=$2
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dinfo "saving vmcore-dmesg.txt to ${_path}"
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$_dmesg_collector /proc/vmcore > ${_path}/vmcore-dmesg-incomplete.txt
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_exitcode=$?
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if [ $_exitcode -eq 0 ]; then
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mv ${_path}/vmcore-dmesg-incomplete.txt ${_path}/vmcore-dmesg.txt
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chmod 600 ${_path}/vmcore-dmesg.txt
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dinfo "saving vmcore-dmesg.txt to $2"
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if $1 /proc/vmcore > "$2/vmcore-dmesg-incomplete.txt"; then
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mv "$2/vmcore-dmesg-incomplete.txt" "$2/vmcore-dmesg.txt"
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chmod 600 "$2/vmcore-dmesg.txt"
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# Make sure file is on disk. There have been instances where later
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# saving vmcore failed and system rebooted without sync and there
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@ -194,16 +194,15 @@ save_vmcore_dmesg_fs() {
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sync
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dinfo "saving vmcore-dmesg.txt complete"
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else
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if [ -f ${_path}/vmcore-dmesg-incomplete.txt ]; then
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chmod 600 ${_path}/vmcore-dmesg-incomplete.txt
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if [ -f "$2/vmcore-dmesg-incomplete.txt" ]; then
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chmod 600 "$2/vmcore-dmesg-incomplete.txt"
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fi
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derror "saving vmcore-dmesg.txt failed"
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fi
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}
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# $1: dump path
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save_opalcore_fs() {
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local _path=$1
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if [ ! -f $OPALCORE ]; then
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# Check if we are on an old kernel that uses a different path
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if [ -f /sys/firmware/opal/core ]; then
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@ -213,9 +212,8 @@ save_opalcore_fs() {
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fi
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fi
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dinfo "saving opalcore:$OPALCORE to ${_path}/opalcore"
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cp $OPALCORE ${_path}/opalcore
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if [ $? -ne 0 ]; then
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dinfo "saving opalcore:$OPALCORE to $1/opalcore"
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if ! cp $OPALCORE "$1/opalcore"; then
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derror "saving opalcore failed"
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return 1
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fi
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@ -228,7 +226,7 @@ save_opalcore_fs() {
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dump_to_rootfs()
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{
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if [[ $(systemctl status dracut-initqueue | sed -n "s/^\s*Active: \(\S*\)\s.*$/\1/p") == "inactive" ]]; then
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if [ "$(systemctl status dracut-initqueue | sed -n "s/^\s*Active: \(\S*\)\s.*$/\1/p")" = "inactive" ]; then
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dinfo "Trying to bring up initqueue for rootfs mount"
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systemctl start dracut-initqueue
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fi
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@ -270,7 +268,7 @@ kdump_emergency_shell()
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type plymouth >/dev/null 2>&1 && plymouth quit
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source_hook "emergency"
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while read _tty rest; do
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while read -r _tty rest; do
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(
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echo
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echo
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@ -280,7 +278,7 @@ kdump_emergency_shell()
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echo 'save it elsewhere and attach it to a bug report.'
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echo
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echo
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) > /dev/$_tty
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) > "/dev/$_tty"
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done < /proc/consoles
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sh -i -l
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/bin/rm -f -- /.console_lock
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@ -297,10 +295,9 @@ do_final_action()
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dinfo "Executing final action $FINAL_ACTION"
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eval $FINAL_ACTION
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}
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do_dump()
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{
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local _ret
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eval $DUMP_INSTRUCTION
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_ret=$?
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@ -313,8 +310,6 @@ do_dump()
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do_kdump_pre()
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{
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local _ret
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if [ -n "$KDUMP_PRE" ]; then
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"$KDUMP_PRE"
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_ret=$?
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@ -339,8 +334,6 @@ do_kdump_pre()
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do_kdump_post()
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{
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local _ret
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if [ -d /etc/kdump/post.d ]; then
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for file in /etc/kdump/post.d/*; do
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"$file" "$1"
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@ -360,97 +353,86 @@ do_kdump_post()
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fi
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}
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# $1: block target, eg. /dev/sda
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dump_raw()
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{
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local _raw=$1
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[ -b "$1" ] || return 1
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[ -b "$_raw" ] || return 1
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dinfo "saving to raw disk $1"
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dinfo "saving to raw disk $_raw"
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if ! $(echo -n $CORE_COLLECTOR|grep -q makedumpfile); then
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if ! echo "$CORE_COLLECTOR" | grep -q makedumpfile; then
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_src_size=$(stat --format %s /proc/vmcore)
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_src_size_mb=$(($_src_size / 1048576))
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_src_size_mb=$((_src_size / 1048576))
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/kdumpscripts/monitor_dd_progress $_src_size_mb &
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fi
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dinfo "saving vmcore"
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$CORE_COLLECTOR /proc/vmcore | dd of=$_raw bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1
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$CORE_COLLECTOR /proc/vmcore | dd of="$1" bs=$DD_BLKSIZE >> /tmp/dd_progress_file 2>&1 || return 1
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sync
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dinfo "saving vmcore complete"
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return 0
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}
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# $1: ssh key file
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# $2: ssh address in <user>@<host> format
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dump_ssh()
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{
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local _ret=0
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local _exitcode=0 _exitcode2=0
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local _opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes"
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local _dir="$KDUMP_PATH/$HOST_IP-$DATEDIR"
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local _host=$2
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local _vmcore="vmcore"
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if is_ipv6_address "$_host"; then
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_scp_address=${_host%@*}@"[${_host#*@}]"
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_ret=0
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_ssh_opt="-i $1 -o BatchMode=yes -o StrictHostKeyChecking=yes"
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_ssh_dir="$KDUMP_PATH/$HOST_IP-$DATEDIR"
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if is_ipv6_address "$2"; then
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_scp_address=${2%@*}@"[${2#*@}]"
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else
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_scp_address=$_host
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_scp_address=$2
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fi
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dinfo "saving to $_host:$_dir"
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dinfo "saving to $2:$_ssh_dir"
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cat /var/lib/random-seed > /dev/urandom
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ssh -q $_opt $_host mkdir -p $_dir || return 1
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ssh -q $_ssh_opt "$2" mkdir -p "$_ssh_dir" || return 1
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save_vmcore_dmesg_ssh ${DMESG_COLLECTOR} ${_dir} "${_opt}" "$_host"
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save_vmcore_dmesg_ssh "$DMESG_COLLECTOR" "$_ssh_dir" "$_ssh_opt" "$2"
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dinfo "saving vmcore"
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save_opalcore_ssh ${_dir} "${_opt}" "$_host" "$_scp_address"
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save_opalcore_ssh "$_ssh_dir" "$_ssh_opt" "$2" "$_scp_address"
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if [ "${CORE_COLLECTOR%%[[:blank:]]*}" = "scp" ]; then
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scp -q $_opt /proc/vmcore "$_scp_address:$_dir/vmcore-incomplete"
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_exitcode=$?
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scp -q $_ssh_opt /proc/vmcore "$_scp_address:$_ssh_dir/vmcore-incomplete"
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_ret=$?
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_vmcore="vmcore"
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else
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$CORE_COLLECTOR /proc/vmcore | ssh $_opt $_host "umask 0077 && dd bs=512 of=$_dir/vmcore-incomplete"
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_exitcode=$?
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$CORE_COLLECTOR /proc/vmcore | ssh $_ssh_opt "$2" "umask 0077 && dd bs=512 of='$_ssh_dir/vmcore-incomplete'"
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_ret=$?
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_vmcore="vmcore.flat"
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fi
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if [ $_exitcode -eq 0 ]; then
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ssh $_opt $_host "mv $_dir/vmcore-incomplete $_dir/$_vmcore"
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_exitcode2=$?
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if [ $_exitcode2 -ne 0 ]; then
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derror "moving vmcore failed, _exitcode:$_exitcode2"
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if [ $_ret -eq 0 ]; then
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ssh $_ssh_opt "$2" "mv '$_ssh_dir/vmcore-incomplete' '$_ssh_dir/$_vmcore'"
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_ret=$?
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if [ $_ret -ne 0 ]; then
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derror "moving vmcore failed, exitcode:$_ret"
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else
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dinfo "saving vmcore complete"
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fi
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else
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derror "saving vmcore failed, _exitcode:$_exitcode"
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derror "saving vmcore failed, exitcode:$_ret"
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fi
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dinfo "saving the $KDUMP_LOG_FILE to $_host:$_dir/"
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dinfo "saving the $KDUMP_LOG_FILE to $2:$_ssh_dir/"
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save_log
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scp -q $_opt $KDUMP_LOG_FILE "$_scp_address:$_dir/"
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_ret=$?
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if [ $_ret -ne 0 ]; then
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if ! scp -q $_ssh_opt $KDUMP_LOG_FILE "$_scp_address:$_ssh_dir/"; then
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derror "saving log file failed, _exitcode:$_ret"
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fi
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if [ $_exitcode -ne 0 ] || [ $_exitcode2 -ne 0 ];then
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return 1
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fi
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return 0
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return $_ret
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}
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# $1: dump path
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# $2: ssh opts
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# $3: ssh address in <user>@<host> format
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# $4: scp address, similar with ssh address but IPv6 addresses are quoted
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save_opalcore_ssh() {
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local _path=$1
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local _opts="$2"
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local _location=$3
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local _scp_address=$4
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ddebug "_path=$_path _opts=$_opts _location=$_location"
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if [ ! -f $OPALCORE ]; then
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# Check if we are on an old kernel that uses a different path
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if [ -f /sys/firmware/opal/core ]; then
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@ -460,31 +442,26 @@ save_opalcore_ssh() {
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fi
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fi
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dinfo "saving opalcore:$OPALCORE to $_location:$_path"
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dinfo "saving opalcore:$OPALCORE to $3:$1"
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scp $_opts $OPALCORE $_scp_address:$_path/opalcore-incomplete
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if [ $? -ne 0 ]; then
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if ! scp $2 $OPALCORE "$4:$1/opalcore-incomplete"; then
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derror "saving opalcore failed"
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return 1
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return 1
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fi
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ssh $_opts $_location mv $_path/opalcore-incomplete $_path/opalcore
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ssh $2 "$3" mv "$1/opalcore-incomplete" "$1/opalcore"
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dinfo "saving opalcore complete"
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return 0
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}
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# $1: dmesg collector
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# $2: dump path
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# $3: ssh opts
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# $4: ssh address in <user>@<host> format
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save_vmcore_dmesg_ssh() {
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local _dmesg_collector=$1
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local _path=$2
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local _opts="$3"
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local _location=$4
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dinfo "saving vmcore-dmesg.txt to $_location:$_path"
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$_dmesg_collector /proc/vmcore | ssh $_opts $_location "umask 0077 && dd of=$_path/vmcore-dmesg-incomplete.txt"
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_exitcode=$?
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if [ $_exitcode -eq 0 ]; then
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ssh -q $_opts $_location mv $_path/vmcore-dmesg-incomplete.txt $_path/vmcore-dmesg.txt
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dinfo "saving vmcore-dmesg.txt to $4:$2"
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if $1 /proc/vmcore | ssh $3 "$4" "umask 0077 && dd of='$2/vmcore-dmesg-incomplete.txt'"; then
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ssh -q $3 "$4" mv "$2/vmcore-dmesg-incomplete.txt" "$2/vmcore-dmesg.txt"
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dinfo "saving vmcore-dmesg.txt complete"
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else
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derror "saving vmcore-dmesg.txt failed"
|
||||
@ -493,17 +470,24 @@ save_vmcore_dmesg_ssh() {
|
||||
|
||||
get_host_ip()
|
||||
{
|
||||
local _host
|
||||
if is_nfs_dump_target || is_ssh_dump_target
|
||||
then
|
||||
kdumpnic=$(getarg kdumpnic=)
|
||||
[ -z "$kdumpnic" ] && derror "failed to get kdumpnic!" && return 1
|
||||
_host=`ip addr show dev $kdumpnic|grep '[ ]*inet'`
|
||||
[ $? -ne 0 ] && derror "wrong kdumpnic: $kdumpnic" && return 1
|
||||
_host=`echo $_host | head -n 1 | cut -d' ' -f2`
|
||||
_host="${_host%%/*}"
|
||||
[ -z "$_host" ] && derror "wrong kdumpnic: $kdumpnic" && return 1
|
||||
HOST_IP=$_host
|
||||
if [ -z "$kdumpnic" ]; then
|
||||
derror "failed to get kdumpnic!"
|
||||
return 1
|
||||
fi
|
||||
if ! kdumphost=$(ip addr show dev "$kdumpnic" | grep '[ ]*inet'); then
|
||||
derror "wrong kdumpnic: $kdumpnic"
|
||||
return 1
|
||||
fi
|
||||
kdumphost=$(echo "$kdumphost" | head -n 1 | awk '{print $2}')
|
||||
kdumphost="${kdumphost%%/*}"
|
||||
if [ -z "$kdumphost" ]; then
|
||||
derror "wrong kdumpnic: $kdumpnic"
|
||||
return 1
|
||||
fi
|
||||
HOST_IP=$kdumphost
|
||||
fi
|
||||
return 0
|
||||
}
|
||||
@ -518,7 +502,7 @@ read_kdump_confs()
|
||||
get_kdump_confs
|
||||
|
||||
# rescan for add code for dump target
|
||||
while read config_opt config_val;
|
||||
while read -r config_opt config_val;
|
||||
do
|
||||
# remove inline comments after the end of a directive.
|
||||
case "$config_opt" in
|
||||
@ -540,12 +524,13 @@ read_kdump_confs()
|
||||
DUMP_INSTRUCTION="dump_ssh $SSH_KEY_LOCATION $config_val"
|
||||
;;
|
||||
esac
|
||||
done <<< "$(kdump_read_conf)"
|
||||
done < "$KDUMP_CONF_PARSED"
|
||||
}
|
||||
|
||||
fence_kdump_notify()
|
||||
{
|
||||
if [ -n "$FENCE_KDUMP_NODES" ]; then
|
||||
# shellcheck disable=SC2086
|
||||
$FENCE_KDUMP_SEND $FENCE_KDUMP_ARGS $FENCE_KDUMP_NODES &
|
||||
fi
|
||||
}
|
||||
@ -566,8 +551,7 @@ fi
|
||||
read_kdump_confs
|
||||
fence_kdump_notify
|
||||
|
||||
get_host_ip
|
||||
if [ $? -ne 0 ]; then
|
||||
if ! get_host_ip; then
|
||||
derror "get_host_ip exited with non-zero status!"
|
||||
exit 1
|
||||
fi
|
||||
@ -576,8 +560,7 @@ if [ -z "$DUMP_INSTRUCTION" ]; then
|
||||
DUMP_INSTRUCTION="dump_fs $NEWROOT"
|
||||
fi
|
||||
|
||||
do_kdump_pre
|
||||
if [ $? -ne 0 ]; then
|
||||
if ! do_kdump_pre; then
|
||||
derror "kdump_pre script exited with non-zero status!"
|
||||
do_final_action
|
||||
# During systemd service to reboot the machine, stop this shell script running
|
||||
@ -587,8 +570,7 @@ make_trace_mem "kdump saving vmcore" '1:shortmem' '2+:mem' '3+:slab'
|
||||
do_dump
|
||||
DUMP_RETVAL=$?
|
||||
|
||||
do_kdump_post $DUMP_RETVAL
|
||||
if [ $? -ne 0 ]; then
|
||||
if ! do_kdump_post $DUMP_RETVAL; then
|
||||
derror "kdump_post script exited with non-zero status!"
|
||||
fi
|
||||
|
||||
|
||||
Loading…
Reference in New Issue
Block a user