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Problem Description:
===================
makedumpfile Fails during kdump reboot
Steps to re-create:
==================
- Install abakvm with 4.8.0-26
- Edit /etc/default/grub.cfg file with crashkernel as in the following:
Logs:
====
root@abakvm:~# cat /proc/cmdline
root=UUID=0ed530b3-0f14-45b8-93a8-7502ee36d45f ro splash quiet
crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M
root@abakvm:~# uname -r
4.8.0-26-generic
root@abakvm:~# ls -lh /var/lib/kdump
total 31M
drwxr-xr-x 5 root root 4.0K Oct 17 03:10 initramfs-tools
lrwxrwxrwx 1 root root 42 Oct 24 05:07 initrd.img ->
/var/lib/kdump/initrd.img-4.8.0-26-generic
-rw-r--r-- 1 root root 16M Oct 17 05:09 initrd.img-4.8.0-22-generic
-rw-r--r-- 1 root root 16M Oct 24 04:56 initrd.img-4.8.0-26-generic
lrwxrwxrwx 1 root root 30 Oct 24 05:07 vmlinuz ->
/boot/vmlinux-4.8.0-26-generic
root@abakvm:~# kdump-config show
DUMP_MODE: kdump
USE_KDUMP: 1
KDUMP_SYSCTL: kernel.panic_on_oops=1
KDUMP_COREDIR: /var/crash
crashkernel addr:
/var/lib/kdump/vmlinuz: symbolic link to /boot/vmlinux-4.8.0-26-generic
kdump initrd:
/var/lib/kdump/initrd.img: symbolic link to
/var/lib/kdump/initrd.img-4.8.0-26-generic
current state: ready to kdump
kexec command:
/sbin/kexec -p --command-line="root=UUID=0ed530b3-0f14-45b8-93a8-7502ee36d45f
ro splash quiet irqpoll nr_cpus=1 nousb systemd.unit=kdump-tools.service"
--initrd=/var/lib/kdump/initrd.img /var/lib/kdump/vmlinuz
root@abakvm:~# dmesg | grep Reser
[ 0.000000] Reserving 4096MB of memory at 128MB for crashkernel (System RAM:
131072MB)
[ 0.000000] cma: Reserved 6560 MiB at 0x0000001e56000000
root@abakvm:~#
- Initiate crash, and when checked in console logs the follwoing makekdumpfile
is failing
Logs:
====
Starting Kernel crash dump capture service...
Starting LSB: Start NTP daemon...
[ 255.138066] kdump-tools[6019]: Starting kdump-tools: * running makedumpfile
-c -d 31 /proc/vmcore /var/crash/201610240645/dump-incomplete
[ 255.218513] kdump-tools[6019]: get_mem_map: Can't distinguish the memory
type.
[ 255.218832] kdump-tools[6019]: The kernel version is not supported.
[ 255.219086] kdump-tools[6019]: The makedumpfile operation may be incomplete.
[ 255.219385] kdump-tools[6019]: makedumpfile Failed.
[ 255.219559] kdump-tools[6019]: * kdump-tools: makedumpfile failed, falling
back to 'cp'
== Comment: #1 - Vaishnavi Bhat <[email protected]> - 2016-10-26 06:05:26 ==
The makedumpfile.h defines the latest kernel version as 4.5.3 where as the
uname output gives a higher kernel version (4.8.0 ), Hence we are seeing this
message in the dmesg.
#define OLDEST_VERSION KERNEL_VERSION(2, 6, 15)/* linux-2.6.15 */
#define LATEST_VERSION KERNEL_VERSION(4, 5, 3)/* linux-4.5.3 */
** Affects: makedumpfile (Ubuntu)
Importance: Undecided
Assignee: Taco Screen team (taco-screen-team)
Status: New
** Tags: architecture-ppc64le bugnameltc-147804 severity-high
targetmilestone-inin---
--
UbuntuKVM:Ubuntu16.10:makekdumpfile fails during kdump reboot
https://bugs.launchpad.net/bugs/1636771
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