On 4/1/2021 12:04, Bruce Mitchell wrote:
Hello David, Pratyush, Vivek, and Maneesh,
This did not seem to send properly from IBM Notes; trying an alternative
plain text style.
And I am also referencing:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/tree/Documentation/admin-guide/kdump/kdump.rst
I am Senior System Software / Firmware / Embedded Engineer do Linux
Kernel Developer for OpenBMC Firmware at @IBM, @ibm-openbmc, and @openbmc.
I am having troubles getting kdump functioning (fully implemented) on
our SoC is the ASPEED AST2600 which is an ARM Cortex A7 core.
I need a crash dump on a kernel panic. I need to get kdump working on
this platform.
Our system has 512MB of RAM and somewhere between 8GB and 32GB of eMMC
for mass storage; kernel panic mounts haven't always gone right,
but that seem build dependent.
My Ubuntu 18.04 LTS Server it just worked first time, no issues.
My kernel is:
Bruce.Mitchell@fstone05p1:~/tmp/openbmc/build/rainier/tmp/work-shared/rainier/kernel-source$ git log | head
commit a3e4860badca60a766b53d169c1c9822cd65b344
Author: Zev Weiss <zev@xxxxxxxxxxxxxxxxx>
Date: Mon Mar 29 19:23:38 2021 -0500
I have kexec -l functioning about like I would expect.
I can get kexec -p to boot the "crash" kernel (my primary kernel and my
crash kernel are the same).
My kexec command line; I have tried with out
--initrd=/home/kexec_files/initrd as well.
kexec -d -p /home/kexec_files/kernel.zImage \
--initrd=/home/kexec_files/initrd \
--dtb=/home/kexec_files/dtb \
--append="earlycon crashkernel=24M console=ttyS4,115200n8
rootwait root=PARTLABEL=rofs-a 1 reset_devices"
I have no core files in /proc
sh-5.1# ls -l /proc/ | grep core
sh-5.1#
So what or where should I copy from for kdump?
OpenBMC builds on OpenEmbedded and Yocto all part of The Linux
Foundation Projects.
I feel like I am just missing some simple clue or two.
Any suggestions, pointers, critique would be highly appreciated!
Thank you!
--
Bruce Mitchell
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