| #!/bin/bash |
| |
| ERROR_MSG="KDUMP_ERROR" |
| |
| find /sys/fs/pstore -name 'dmesg-*' -print -exec cat {} \; -exec rm -f {} \; |
| |
| # Dump the core file to the ram |
| dumpdir="/run/log/kdump" |
| mkdir -p ${dumpdir} |
| |
| pmsgs=$(ls /sys/fs/pstore/pmsg-*) || exit 0 |
| |
| # there should always be 1 pmsg file |
| # if not, only process the first one and delete them all at the end |
| pmsg=$(echo "$pmsgs" | head -n 1) |
| |
| # Parsing the pmsg file |
| # First line msg_len is a single number represents the dmesg buffer |
| # Following msg_len bytes of dmesg |
| # Rest of the buffer is the kdump, or error message starting with "KDUMP_ERROR" |
| msg_len=$(head -n 1 $pmsg) |
| msg_len_size=$(echo $msg_len | wc -c) |
| error_msg_len=$(echo -n $ERROR_MSG | wc -c) |
| |
| core_offset=$(( msg_len + msg_len_size )) |
| |
| # print the version info |
| cat /etc/os-release |
| |
| # dump the dmesg to stdout |
| dd if=$pmsg bs=1 skip=$msg_len_size count=$msg_len |
| |
| if [ $(dd if=$pmsg bs=1 skip=$core_offset count=$error_msg_len) == $ERROR_MSG ]; then |
| # dump the error msg to stdout |
| dd if=$pmsg bs=$core_offset skip=1 |
| else |
| # process the core file |
| dd if=$pmsg bs=$core_offset skip=1 | makedumpfile -R ${dumpdir}/kcore-$(/bin/date +%Y_%m_%d_%H_%M_%S) |
| fi |
| |
| echo "removing pmsg file "$pmsgs |
| |
| rm -f $pmsgs |
