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[Bug 1415562] Re: [Ubuntu 15.04] Support firmware assisted dump on ppc64le

 

Hello,

I have just synchronized the debian version of makedumpfile with Ubuntu
as there is no longer any delta between both. I would hate to
reintroduce such a delta only for Ubuntu so I would greatly prefer to
implement the fadump feature in Debian first.

I have just created a bug on the Debian BTS to track this request :
http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776574

I am starting work on the debian side of things

** Bug watch added: Debian Bug tracker #776574
   http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=776574

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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:
  Confirmed
Status in makedumpfile package in Ubuntu:
  In Progress

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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