Initiating an NVMe disk dump

To initiate the dump, IPL the NVMe dump tool with the NVMe dump load type. To IPL the dump tool, specify the function ID and name space ID of the NVMe disk on which the dump tool is installed.

About this task

The dump process can take several minutes depending on the device type you are using and the amount of system memory. The dump progress and any error messages are reported on the operating system messages console.

Procedure

IPL the NVMe dump tool.

After the dump tool is IPLed, messages that indicate the progress of the dump are written to the console:

Starting NGDump...
[    8.932343] ngdump.sh[327]: NGDump started
[    8.934739] ngdump.sh[336]: Checking for memory holes                        : [  0.0 %] /
[    8.967536] ngdump.sh[336]: Checking for memory holes                        : [100.0 %] |
[    9.076976] ngdump.sh[336]: Excluding unnecessary pages                      : [100.0 %] \
[   11.721157] ngdump.sh[336]: Copying data                                     : [  0.0 %] -
[   12.317319] ngdump.sh[336]: Copying data                                     : [ 22.5 %] /        eta: 2s
[   13.273000] ngdump.sh[336]: Copying data                                     : [100.0 %] |        eta: 0s
[   13.273244] ngdump.sh[336]: The kernel version is not supported.
[   13.273263] ngdump.sh[336]: The makedumpfile operation may be incomplete.
[   13.273281] ngdump.sh[336]: The dumpfile is saved to /ngdump/dump.elf.
[   13.273299] ngdump.sh[336]: makedumpfile Completed.

Results

The dump process copies the dump to the dump partition. After the dump completes successfully, you can IPL Linux® again. You can then extract the dump from the dump partition into a file.