------- Comment From hbath...@in.ibm.com 2018-08-11 08:48 EDT-------
After upgrading to kdump-tools_1.6.4-1~16.04.0cascardo2_ppc64el.deb package,
dump capture succeeds without any complaints:
The udev rules trigger kdump-tools service reload as can be seen below:
--
root@ubuntu:~# dpkg -l | grep kdump-tools
ii kdump-tools 1:1.6.4-1~16.04.0cascardo2
ppc64el scripts and tools for automating kdump (Linux crash dumps)
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~# systemctl status kdump-tools.service -l
? kdump-tools.service - Kernel crash dump capture service
Loaded: loaded (/lib/systemd/system/kdump-tools.service; enabled; vendor pres
Active: active (exited) since Sat 2018-08-11 08:33:27 EDT; 2min 8s ago
Process: 25166 ExecStop=/etc/init.d/kdump-tools stop (code=exited, status=0/SU
Process: 25200 ExecStart=/etc/init.d/kdump-tools start (code=exited, status=0/
Main PID: 25200 (code=exited, status=0/SUCCESS)
Aug 11 08:33:26 ubuntu systemd[1]: Starting Kernel crash dump capture service...
Aug 11 08:33:26 ubuntu kdump-tools[25200]: Starting kdump-tools: * Creating sym
Aug 11 08:33:26 ubuntu kdump-tools[25200]: * Creating symlink /var/lib/kdump/in
Aug 11 08:33:26 ubuntu kdump-tools[25200]: Modified cmdline:BOOT_IMAGE=/boot/vml
Aug 11 08:33:26 ubuntu kdump-tools[25200]: * loaded kdump kernel
Aug 11 08:33:26 ubuntu kdump-tools[25248]: /sbin/kexec -p --command-line="BOOT_I
Aug 11 08:33:27 ubuntu kdump-tools[25249]: loaded kdump kernel
Aug 11 08:33:27 ubuntu systemd[1]: Started Kernel crash dump capture service.
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~# drmgr -c mem -r -q 1
Validating Memory DLPAR capability...yes.
[1459216.723209] pseries-hotplug-mem: Attempting to hot-remove 1 LMB(s)
[1459216.749014] Offlined Pages 4096
[1459193.925176] kdump-tools[25419]: Stopping kdump-tools: * unloaded kdump
kernel
[1459193.985143] kdump-tools[25453]: Starting kdump-tools: * Creating symlink
/var/lib/kdump/vmlinuz
[1459193.986120] kdump-tools[25453]: * Creating symlink
/var/lib/kdump/initrd.img
[1459194.024961] kdump-tools[25453]: Modified
cmdline:BOOT_IMAGE=/boot/vmlinux-4.15.0-24-generic
root=UUID=1aa9458c-3974-4cb4-9ab3-9ee03c0f4e5e ro xmon=on nr_cpus=1
systemd.unit=kdump-tools.service irqpoll noirqdistrib nousb elfcorehdr=158144K
[1459217.005820] pseries-hotplug-mem: Memory at 40000000 was hot-removed
DR_TOTAL_RESOURCES=1
root@ubuntu:~# [1459194.297073] kdump-tools[25453]: * loaded kdump kernel
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~#
root@ubuntu:~# systemctl status kdump-tools.service -l
? kdump-tools.service - Kernel crash dump capture service
Loaded: loaded (/lib/systemd/system/kdump-tools.service; enabled; vendor pres
Active: active (exited) since Sat 2018-08-11 08:35:47 EDT; 12s ago
Process: 25419 ExecStop=/etc/init.d/kdump-tools stop (code=exited, status=0/SU
Process: 25453 ExecStart=/etc/init.d/kdump-tools start (code=exited, status=0/
Main PID: 25453 (code=exited, status=0/SUCCESS)
Aug 11 08:35:47 ubuntu systemd[1]: Starting Kernel crash dump capture service...
Aug 11 08:35:47 ubuntu kdump-tools[25453]: Starting kdump-tools: * Creating sym
Aug 11 08:35:47 ubuntu kdump-tools[25453]: * Creating symlink /var/lib/kdump/in
Aug 11 08:35:47 ubuntu kdump-tools[25453]: Modified cmdline:BOOT_IMAGE=/boot/vml
Aug 11 08:35:47 ubuntu kdump-tools[25453]: * loaded kdump kernel
Aug 11 08:35:47 ubuntu kdump-tools[25505]: /sbin/kexec -p --command-line="BOOT_I
Aug 11 08:35:47 ubuntu kdump-tools[25506]: loaded kdump kernel
Aug 11 08:35:47 ubuntu systemd[1]: Started Kernel crash dump capture service.
root@ubuntu:~#
--
and dump captured successfully after memory dlpar operation:
--
[ 139.944700] kdump-tools[1278]: Starting kdump-tools: * running makedumpfile
-c -d 31 /proc/vmcore /var/crash/201808110838/dump-incomplete
Copying data : [100.0 %] - eta:
0s
[ 147.858420] kdump-tools[1278]: The kernel version is not supported.
[ 147.858718] kdump-tools[1278]: The makedumpfile operation may be incomplete.
[ 147.859002] kdump-tools[1278]: The dumpfile is saved to
/var/crash/201808110838/dump-incomplete.
[ 147.859260] kdump-tools[1278]: makedumpfile Completed.
[ 147.899799] kdump-tools[1278]: * kdump-tools: saved vmcore in
/var/crash/201808110838
[ 147.998442] kdump-tools[1278]: * running makedumpfile --dump-dmesg
/proc/vmcore /var/crash/201808110838/dmesg.201808110838
[ 148.008063] kdump-tools[1278]: The kernel version is not supported.
[ 148.008436] kdump-tools[1278]: The makedumpfile operation may be incomplete.
[ 148.008672] kdump-tools[1278]: The dmesg log is saved to
/var/crash/201808110838/dmesg.201808110838.
[ 148.008913] kdump-tools[1278]: makedumpfile Completed.
[ 148.009135] kdump-tools[1278]: * kdump-tools: saved dmesg content in
/var/crash/201808110838
[ 148.033105] kdump-tools[1278]: Sat, 11 Aug 2018 08:38:51 -0400
[ 148.069165] kdump-tools[1278]: Rebooting.
[ 148.276176] reboot: Restarting system
--
Thanks
Hari
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Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1655280
Title:
ISST-LTE:pVM:roselp4:ubuntu 16.04: cp: error reading '/proc/vmcore':
Bad address when trying to dump vmcore
Status in The Ubuntu-power-systems project:
Incomplete
Status in linux package in Ubuntu:
In Progress
Bug description:
== Comment: #0 - Ping Tian Han <pt...@cn.ibm.com> - 2017-01-09 02:51:00 ==
---Problem Description---
Vmcore cannot be saved when triggering bug 150353 on roselp4:
Copying data : [ 2.0 %] \/usr/sbin/kdump-config: line
591: 5502 Bus error makedumpfile $MAKEDUMP_ARGS $vmcore_file
$KDUMP_CORETEMP
[ 512.833872] kdump-tools[5450]: * kdump-tools: makedumpfile failed,
falling back to 'cp'
[ 573.595449] kdump-tools[5450]: cp: error reading '/proc/vmcore': Bad
address
[ 573.605717] kdump-tools[5450]: * kdump-tools: failed to save vmcore in
/var/crash/201701090223
[ 573.765417] kdump-tools[5450]: * running makedumpfile --dump-dmesg
/proc/vmcore /var/crash/201701090223/dmesg.201701090223
[ 574.285506] kdump-tools[5450]: The kernel version is not supported.
[ 574.285672] kdump-tools[5450]: The makedumpfile operation may be
incomplete.
[ 574.285767] kdump-tools[5450]: The dmesg log is saved to
/var/crash/201701090223/dmesg.201701090223.
[ 574.305422] kdump-tools[5450]: makedumpfile Completed.
[ 574.315363] kdump-tools[5450]: * kdump-tools: saved dmesg content in
/var/crash/201701090223
[ 574.615688] kdump-tools[5450]: Mon, 09 Jan 2017 02:24:26 -0600
[ 574.705384] kdump-tools[5450]: Rebooting.
Stopping ifup for ib0...
[ OK ] Stopped ifup for ib0.
[ 1008.579897] reboot: Restarting system
Contact Information = Ping Tian Han/pt...@cn.ibm.com Carrie
Mitsuyoshi/carri...@us.ibm.com
---uname output---
Linux roselp4 4.8.0-34-generic #36~16.04.1-Ubuntu SMP Wed Dec 21 18:53:20 UTC
2016 ppc64le ppc64le ppc64le GNU/Linux
Machine Type = lpar
---Debugger---
A debugger is not configured
---Steps to Reproduce---
1. config kdump on roselp4
2. try to trigger bug 150353
*Additional Instructions for Ping Tian Han/pt...@cn.ibm.com Carrie
Mitsuyoshi/carri...@us.ibm.com:
-Post a private note with access information to the machine that the bug is
occuring on.
== Comment: #3 - Brahadambal Srinivasan <brsri...@in.ibm.com> -
2017-01-10 02:42:25 ==
root@roselp4:~# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinux-4.8.0-34-generic
root=UUID=0bcf3431-df8b-499c-9a13-33070f242e0c ro splash quiet
crashkernel=384M-:512M
root@roselp4:~# dmesg | grep Reser
[ 0.000000] Reserving 512MB of memory at 128MB for crashkernel (System
RAM: 21760MB)
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