kernel-packages team mailing list archive

[Launchpad Bug Tracker <1464833@xxxxxxxxxxxxxxxxxx>]

You have been subscribed to a public bug:

[SRU justification]
This represent a hardware enablement SRU : Firmware assisted dumps (fadump) are not possible on LTS.

[Impact]
The fadump mechanism cannot be used on Power systems running Trusty

[Fix]
Backport fadump functionality from makedumpfile 1.5.8 present in Wily and onward.

[Test Case]
See comment #9 : The proposed SRU has been tested from a PPA on a Power VM.

[Regression]
None expected from a functionality point of view as it is a new feature. Existing code paths are minimally modified.

[Original description of the problem]

---Steps to Reproduce---
1) Using latest daily ISO install 14.04.02 as a Power VM guest.
2) Upgrade the kernel to 3.19 level (3.19.0-18-generic)
3) In order to use Firmware Assisted Dump feature update the kernel command with fadump=on.
4) Reboot.

Post reboot using kdump-config load command fails with following message
:

# kdump-config load
Memory for crashkernel is not reserved
Please reserve memory by passing"crashkernel=X@Y" parameter to kernel
Then try to loading kdump kernel
 * failed to load kdump kernel

# kdump-config status
current state   : Not ready to kdump
#

# cat /proc/cmdline
BOOT_IMAGE=/boot/vmlinux-3.19.0-18-generic root=UUID=3ea23bcf-7269-432f-bacc-f82c6cdd774e ro splash quiet fadump=on crashkernel=2G-4G:320M,4G-32G:512M,32G-64G:1024M,64G-128G:2048M,128G-:4096M vt.handoff=7
# cat /sys/kernel/fadump_enabled
1
# cat /sys/kernel/fadump_registered
0
#

# dmesg | grep -i Firmware
[    0.000000] Reserved 5120MB of memory at 97279MB for firmware-assisted dump
[    0.000000] firmware_features = 0x00000001c45ffc5f
#
# cat /boot/config-3.19.0-18-generic | grep -i FA_DUMP
CONFIG_FA_DUMP=y
#

Are there any user space fixes missing which prevents me from
configuring firmware assisted dump ?

== Comment: #4 - Hari Krishna Bathini <hbathini@xxxxxxxxxx> - 2015-06-12 05:28:24 ==
This patch makes kdump-tools fadump aware so as to switch between
kdump & fadump seemlessly based on the dump method enabled (fadump/kdump).

Thanks
Hari

** Affects: makedumpfile (Ubuntu)
     Importance: Undecided
         Status: New

** Affects: makedumpfile (Ubuntu Trusty)
     Importance: High
     Assignee: Louis Bouchard (louis-bouchard)
         Status: In Progress


** Tags: architecture-ppc64le bot-comment bugnameltc-125884 patch severity-critical targetmilestone-inin14044
-- 
Unable to configure Firmware Assisted dump
https://bugs.launchpad.net/bugs/1464833
You received this bug notification because you are a member of Kernel Packages, which is subscribed to makedumpfile in Ubuntu.