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Message #104932
[Bug 1415562] Comment bridged from LTC Bugzilla
------- Comment From ssant@xxxxxxxxxx 2015-02-20 06:50 EDT-------
Current daily ISO builds for 15.04 still has CONFIG_FA_DUMP disabled. Any idea when this config will be enabled in 15.04 ?
# cat /boot/config-3.18.0-13-generic | grep FA_DUMP
# CONFIG_FA_DUMP is not set
#
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https://bugs.launchpad.net/bugs/1415562
Title:
[Ubuntu 15.04] Support firmware assisted dump on ppc64le
Status in linux package in Ubuntu:
Fix Committed
Status in makedumpfile package in Ubuntu:
Fix Released
Bug description:
Starting from POWER6, the firmware now has a capability to preserve
the partition memory dump during system crash and boot into a fresh
copy of the kernel with fully-reset system. This feature adds the
necessary support to exploit the dump capture capability provided by
Power firmware. With this feature support, the production kernel will
register for firmware-assisted dump using RTAS (Runtime Abstraction
Service) calls and builds required ELF header which then gets exported
through '/proc/vmcore' in the second kernel after crash. This feature
improves Power serviceability by making it more robust compared to
current kdump mechanism on Linux.
Ubuntu 15.04 kernel already includes the necessary code for fadump.
The only kernel change needed is to enable CONFIG_FA_DUMP in the
kernel configuration. In addition, an update is needed for a script in
kdump-tools package.
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