[PATCH 32/47] kdump-lib-initramfs.sh: move dump raleted functions to kdump.sh

These dump related functions are only used by dracut-kdump.sh. Signed-off-by: Kairui Song <kasong(a)redhat.com&gt; --- dracut-kdump.sh | 288 ++++++++++++++++++++++++++++++++++++++++ kdump-lib-initramfs.sh | 289 ----------------------------------------- 2 files changed, 288 insertions(+), 289 deletions(-) diff --git a/dracut-kdump.sh b/dracut-kdump.sh index 19deaaa4..e9346c29 100755 --- a/dracut-kdump.sh +++ b/dracut-kdump.sh @@ -9,13 +9,301 @@ if [ -f /etc/fadump.initramfs ] && [ ! -f /proc/device-tree/rtas/ibm,kernel-dump fi . /lib/dracut-lib.sh +. /lib/kdump-logger.sh . /lib/kdump-lib-initramfs.sh +#initiate the kdump logger +dlog_init +if [ $? -ne 0 ]; then + echo "failed to initiate the kdump logger." + exit 1 +fi + +KDUMP_PATH="/var/crash" +KDUMP_LOG_FILE="/run/initramfs/kexec-dmesg.log" +CORE_COLLECTOR="" +DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 7 -d 31" +DMESG_COLLECTOR="/sbin/vmcore-dmesg" +FAILURE_ACTION="systemctl reboot -f" +DATEDIR=`date +%Y-%m-%d-%T` +HOST_IP='127.0.0.1' +DUMP_INSTRUCTION="" +SSH_KEY_LOCATION="/root/.ssh/kdump_id_rsa" +KDUMP_SCRIPT_DIR="/kdumpscripts" +DD_BLKSIZE=512 +FINAL_ACTION="systemctl reboot -f" +KDUMP_PRE="" +KDUMP_POST="" +NEWROOT="/sysroot" +OPALCORE="/sys/firmware/opal/mpipl/core" + set -o pipefail DUMP_RETVAL=0 export PATH=$PATH:$KDUMP_SCRIPT_DIR +get_kdump_confs() +{ + local config_opt config_val + + while read config_opt config_val; + do + # remove inline comments after the end of a directive. + case "$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" + ;; + failure_action|default) + case $config_val in + shell) + FAILURE_ACTION="kdump_emergency_shell" + ;; + reboot) + FAILURE_ACTION="systemctl reboot -f && exit" + ;; + halt) + FAILURE_ACTION="halt && exit" + ;; + poweroff) + FAILURE_ACTION="systemctl poweroff -f && exit" + ;; + dump_to_rootfs) + FAILURE_ACTION="dump_to_rootfs" + ;; + esac + ;; + final_action) + case $config_val in + reboot) + FINAL_ACTION="systemctl reboot -f" + ;; + halt) + FINAL_ACTION="halt" + ;; + poweroff) + FINAL_ACTION="systemctl poweroff -f" + ;; + esac + ;; + esac + done <<< "$(kdump_read_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 +} + +# store the kexec kernel log to a file. +save_log() +{ + dmesg -T > $KDUMP_LOG_FILE + + if command -v journalctl > /dev/null; then + journalctl -ab >> $KDUMP_LOG_FILE + fi + chmod 600 $KDUMP_LOG_FILE +} + +# dump_fs <mount point> +dump_fs() +{ + local _exitcode + local _mp=$1 + local _op=$(get_mount_info OPTIONS target $_mp -f) + ddebug "dump_fs _mp=$_mp _opts=$_op" + + if ! is_mounted "$_mp"; then + dinfo "dump path \"$_mp\" is not mounted, trying to mount..." + mount --target $_mp + if [ $? -ne 0 ]; then + derror "failed to dump to \"$_mp\", it's not a mount point!" + return 1 + fi + fi + + # Remove -F in makedumpfile case. We don't want a flat format dump here. + [[ $CORE_COLLECTOR = *makedumpfile* ]] && CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e "s/-F//g"` + + local _dump_path=$(echo "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/" | tr -s /) + + dinfo "saving to $_dump_path" + + # Only remount to read-write mode if the dump target is mounted read-only. + if [[ "$_op" = "ro"* ]]; then + dinfo "Remounting the dump target in rw mode." + mount -o remount,rw $_mp || return 1 + fi + + mkdir -p $_dump_path || return 1 + + save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_dump_path" + save_opalcore_fs "$_dump_path" + + dinfo "saving vmcore" + $CORE_COLLECTOR /proc/vmcore $_dump_path/vmcore-incomplete + _exitcode=$? + if [ $_exitcode -eq 0 ]; then + mv $_dump_path/vmcore-incomplete $_dump_path/vmcore + sync + dinfo "saving vmcore complete" + else + derror "saving vmcore failed, _exitcode:$_exitcode" + fi + + dinfo "saving the $KDUMP_LOG_FILE to $_dump_path/" + save_log + mv $KDUMP_LOG_FILE $_dump_path/ + if [ $_exitcode -ne 0 ]; then + return 1 + fi + + # 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 + + dinfo "saving vmcore-dmesg.txt to ${_path}" + $_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 + chmod 600 ${_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 + dinfo "saving vmcore-dmesg.txt complete" + else + if [ -f ${_path}/vmcore-dmesg-incomplete.txt ]; then + chmod 600 ${_path}/vmcore-dmesg-incomplete.txt + fi + derror "saving vmcore-dmesg.txt failed" + fi +} + +save_opalcore_fs() { + local _path=$1 + + if [ ! -f $OPALCORE ]; then + # Check if we are on an old kernel that uses a different path + if [ -f /sys/firmware/opal/core ]; then + OPALCORE="/sys/firmware/opal/core" + else + return 0 + fi + fi + + dinfo "saving opalcore:$OPALCORE to ${_path}/opalcore" + cp $OPALCORE ${_path}/opalcore + if [ $? -ne 0 ]; then + derror "saving opalcore failed" + return 1 + fi + + sync + dinfo "saving opalcore complete" + return 0 +} + +dump_to_rootfs() +{ + + if [[ $(systemctl status dracut-initqueue | sed -n "s/^\s*Active: \(\S*\)\s.*$/\1/p") == "inactive" ]]; then + dinfo "Trying to bring up initqueue for rootfs mount" + systemctl start dracut-initqueue + fi + + dinfo "Clean up dead systemd services" + systemctl cancel + dinfo "Waiting for rootfs mount, will timeout after 90 seconds" + systemctl start --no-block sysroot.mount + + _loop=0 + while [ $_loop -lt 90 ] && ! is_mounted /sysroot; do + sleep 1 + _loop=$((_loop + 1)) + done + + if ! is_mounted /sysroot; then + derror "Failed to mount rootfs" + return + fi + + ddebug "NEWROOT=$NEWROOT" + dump_fs $NEWROOT +} + +kdump_emergency_shell() +{ + ddebug "Switching to kdump emergency shell..." + + [ -f /etc/profile ] && . /etc/profile + export PS1='kdump:${PWD}# ' + + . /lib/dracut-lib.sh + if [ -f /dracut-state.sh ]; then + . /dracut-state.sh 2>/dev/null + fi + + source_conf /etc/conf.d + + type plymouth >/dev/null 2>&1 && plymouth quit + + source_hook "emergency" + while read _tty rest; do + ( + echo + echo + echo 'Entering kdump emergency mode.' + echo 'Type "journalctl" to view system logs.' + echo 'Type "rdsosreport" to generate a sosreport, you can then' + echo 'save it elsewhere and attach it to a bug report.' + echo + echo + ) > /dev/$_tty + done < /proc/consoles + sh -i -l + /bin/rm -f -- /.console_lock +} + +do_failure_action() +{ + dinfo "Executing failure action $FAILURE_ACTION" + eval $FAILURE_ACTION +} + +do_final_action() +{ + dinfo "Executing final action $FINAL_ACTION" + eval $FINAL_ACTION +} do_dump() { local _ret diff --git a/kdump-lib-initramfs.sh b/kdump-lib-initramfs.sh index 3b6b63bd..62affc1c 100755 --- a/kdump-lib-initramfs.sh +++ b/kdump-lib-initramfs.sh @@ -3,35 +3,9 @@ # Function and variables used in initramfs environment, POSIX compatible # -. /lib/kdump-logger.sh - DEFAULT_PATH="/var/crash/" -KDUMP_PATH="/var/crash" -KDUMP_LOG_FILE="/run/initramfs/kexec-dmesg.log" -CORE_COLLECTOR="" -DEFAULT_CORE_COLLECTOR="makedumpfile -l --message-level 7 -d 31" -DMESG_COLLECTOR="/sbin/vmcore-dmesg" -FAILURE_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_PRE="" -KDUMP_POST="" -NEWROOT="/sysroot" -OPALCORE="/sys/firmware/opal/mpipl/core" KDUMP_CONFIG_FILE="/etc/kdump.conf" -#initiate the kdump logger -dlog_init -if [ $? -ne 0 ]; then - echo "failed to initiate the kdump logger." - exit 1 -fi - # Read kdump config in well formated style kdump_read_conf() { @@ -156,266 +130,3 @@ is_fs_dump_target() { [[ $(kdump_get_conf_val "ext[234]\|xfs\|btrfs\|minix") ]] } - -get_kdump_confs() -{ - local config_opt config_val - - while read config_opt config_val; - do - # remove inline comments after the end of a directive. - case "$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" - ;; - failure_action|default) - case $config_val in - shell) - FAILURE_ACTION="kdump_emergency_shell" - ;; - reboot) - FAILURE_ACTION="systemctl reboot -f && exit" - ;; - halt) - FAILURE_ACTION="halt && exit" - ;; - poweroff) - FAILURE_ACTION="systemctl poweroff -f && exit" - ;; - dump_to_rootfs) - FAILURE_ACTION="dump_to_rootfs" - ;; - esac - ;; - final_action) - case $config_val in - reboot) - FINAL_ACTION="systemctl reboot -f" - ;; - halt) - FINAL_ACTION="halt" - ;; - poweroff) - FINAL_ACTION="systemctl poweroff -f" - ;; - esac - ;; - esac - done <<< "$(kdump_read_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 -} - -# store the kexec kernel log to a file. -save_log() -{ - dmesg -T > $KDUMP_LOG_FILE - - if command -v journalctl > /dev/null; then - journalctl -ab >> $KDUMP_LOG_FILE - fi - chmod 600 $KDUMP_LOG_FILE -} - -# dump_fs <mount point> -dump_fs() -{ - local _exitcode - local _mp=$1 - local _op=$(get_mount_info OPTIONS target $_mp -f) - ddebug "dump_fs _mp=$_mp _opts=$_op" - - if ! is_mounted "$_mp"; then - dinfo "dump path \"$_mp\" is not mounted, trying to mount..." - mount --target $_mp - if [ $? -ne 0 ]; then - derror "failed to dump to \"$_mp\", it's not a mount point!" - return 1 - fi - fi - - # Remove -F in makedumpfile case. We don't want a flat format dump here. - [[ $CORE_COLLECTOR = *makedumpfile* ]] && CORE_COLLECTOR=`echo $CORE_COLLECTOR | sed -e "s/-F//g"` - - local _dump_path=$(echo "$_mp/$KDUMP_PATH/$HOST_IP-$DATEDIR/" | tr -s /) - - dinfo "saving to $_dump_path" - - # Only remount to read-write mode if the dump target is mounted read-only. - if [[ "$_op" = "ro"* ]]; then - dinfo "Remounting the dump target in rw mode." - mount -o remount,rw $_mp || return 1 - fi - - mkdir -p $_dump_path || return 1 - - save_vmcore_dmesg_fs ${DMESG_COLLECTOR} "$_dump_path" - save_opalcore_fs "$_dump_path" - - dinfo "saving vmcore" - $CORE_COLLECTOR /proc/vmcore $_dump_path/vmcore-incomplete - _exitcode=$? - if [ $_exitcode -eq 0 ]; then - mv $_dump_path/vmcore-incomplete $_dump_path/vmcore - sync - dinfo "saving vmcore complete" - else - derror "saving vmcore failed, _exitcode:$_exitcode" - fi - - dinfo "saving the $KDUMP_LOG_FILE to $_dump_path/" - save_log - mv $KDUMP_LOG_FILE $_dump_path/ - if [ $_exitcode -ne 0 ]; then - return 1 - fi - - # 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 - - dinfo "saving vmcore-dmesg.txt to ${_path}" - $_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 - chmod 600 ${_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 - dinfo "saving vmcore-dmesg.txt complete" - else - if [ -f ${_path}/vmcore-dmesg-incomplete.txt ]; then - chmod 600 ${_path}/vmcore-dmesg-incomplete.txt - fi - derror "saving vmcore-dmesg.txt failed" - fi -} - -save_opalcore_fs() { - local _path=$1 - - if [ ! -f $OPALCORE ]; then - # Check if we are on an old kernel that uses a different path - if [ -f /sys/firmware/opal/core ]; then - OPALCORE="/sys/firmware/opal/core" - else - return 0 - fi - fi - - dinfo "saving opalcore:$OPALCORE to ${_path}/opalcore" - cp $OPALCORE ${_path}/opalcore - if [ $? -ne 0 ]; then - derror "saving opalcore failed" - return 1 - fi - - sync - dinfo "saving opalcore complete" - return 0 -} - -dump_to_rootfs() -{ - - if [[ $(systemctl status dracut-initqueue | sed -n "s/^\s*Active: \(\S*\)\s.*$/\1/p") == "inactive" ]]; then - dinfo "Trying to bring up initqueue for rootfs mount" - systemctl start dracut-initqueue - fi - - dinfo "Clean up dead systemd services" - systemctl cancel - dinfo "Waiting for rootfs mount, will timeout after 90 seconds" - systemctl start --no-block sysroot.mount - - _loop=0 - while [ $_loop -lt 90 ] && ! is_mounted /sysroot; do - sleep 1 - _loop=$((_loop + 1)) - done - - if ! is_mounted /sysroot; then - derror "Failed to mount rootfs" - return - fi - - ddebug "NEWROOT=$NEWROOT" - dump_fs $NEWROOT -} - -kdump_emergency_shell() -{ - ddebug "Switching to kdump emergency shell..." - - [ -f /etc/profile ] && . /etc/profile - export PS1='kdump:${PWD}# ' - - . /lib/dracut-lib.sh - if [ -f /dracut-state.sh ]; then - . /dracut-state.sh 2>/dev/null - fi - - source_conf /etc/conf.d - - type plymouth >/dev/null 2>&1 && plymouth quit - - source_hook "emergency" - while read _tty rest; do - ( - echo - echo - echo 'Entering kdump emergency mode.' - echo 'Type "journalctl" to view system logs.' - echo 'Type "rdsosreport" to generate a sosreport, you can then' - echo 'save it elsewhere and attach it to a bug report.' - echo - echo - ) > /dev/$_tty - done < /proc/consoles - sh -i -l - /bin/rm -f -- /.console_lock -} - -do_failure_action() -{ - dinfo "Executing failure action $FAILURE_ACTION" - eval $FAILURE_ACTION -} - -do_final_action() -{ - dinfo "Executing final action $FINAL_ACTION" - eval $FINAL_ACTION -} -- 2.31.1