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---Problem Description---
After a memory DLPAR removal, kdump doesn't work:
Starting Kernel crash dump capture service...
[ 67.714593] kdump-tools[3850]: Starting kdump-tools: * running makedumpfile
-c -d 31 /proc/vmcore /var/crash/201702230005/dump-incomplete
Copying data : [ 2.1 %] -/usr/sbin/kdump-config: line
639: 3897 Bus error makedumpfile $MAKEDUMP_ARGS $vmcore_file
$KDUMP_CORETEMP
[ 72.314140] kdump-tools[3850]: * kdump-tools: makedumpfile failed, falling
back to 'cp'
[ 73.693881] kdump-tools[3850]: cp: error reading '/proc/vmcore': Bad address
[ 73.704152] kdump-tools[3850]: * kdump-tools: failed to save vmcore in
/var/crash/201702230005
[ 73.823643] kdump-tools[3850]: * running makedumpfile --dump-dmesg
/proc/vmcore /var/crash/201702230005/dmesg.201702230005
[ 73.973813] kdump-tools[3850]: The kernel version is not supported.
[ 73.974078] kdump-tools[3850]: The makedumpfile operation may be incomplete.
[ 73.983506] kdump-tools[3850]: The dmesg log is saved to
/var/crash/201702230005/dmesg.201702230005.
[ 73.983752] kdump-tools[3850]: makedumpfile Completed.
[ 73.983998] kdump-tools[3850]: * kdump-tools: saved dmesg content in
/var/crash/201702230005
[ 74.104555] kdump-tools[3850]: Thu, 23 Feb 2017 00:05:15 -0600
[ 74.233502] kdump-tools[3850]: Failed to read reboot parameter file: No such
file or directory
[ 74.233782] kdump-tools[3850]: Rebooting.
[ 86.629777] reboot: Restarting system
The kdump service should be restarted after the memory DLPAR operation.
C
---uname output---
Linux roselp4 4.10.0-8-generic #10-Ubuntu SMP Mon Feb 13 14:00:06 UTC 2017
ppc64le ppc64le ppc64le GNU/Linux
Machine Type = lpar
---Debugger---
A debugger is not configured
---Steps to Reproduce---
1. config kdump on roselp4
2. do a memory DLPAR removal operation
3. trigger kdump
** Affects: linux (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-151960 severity-high
targetmilestone-inin---
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ISST-LTE:pVM:roselp4:ubuntu 17.04: kdump failed after memory DLPAR
https://bugs.launchpad.net/bugs/1667245
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