
Hello !
Since grml seems to become more and more THE live-cd for admins, and maybe often being used for recovery purpose to save data from more or less "dead" boxes - did anybody think of taking a look at the BadRam Kernelpatch ?
http://rick.vanrein.org/linux/badram/index.html
--------------------------------------- Description:
BadRAM: Linux kernel support for broken RAM modules Summary: This page proposes an approach to support RAMs with defective addresses, This may open interesting business perspectives, where those RAMs can be sold under a white label for less money rather than discarded of without any profit.
Objective of the project My objective is to patch the Linux kernel in such a way that it can handle defective RAM modules. With defective RAM, I mean RAM which has some bits wrong at some (known) addresses. Normally, such RAM is considered useless and thrown away; the larger RAMs get, the higher the chances of failing addresses. With ever growing RAM sizes, it would therefore be pleasant to have an alternative to discarding of defective RAM chips. ---------------------------------------
Unfortunately, I don`t have personal experience with this patch (yet), but maybe there are people on this list who know that patch already !?
It exists for quite some time and a version for recent 2.6.18 kernel is available.
Also, there exists a spin-off project "BadMem" at http://badmem.sourceforge.net/
something useful for GRML ?
comments ?
regards Roland
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* devzero@web.de devzero@web.de [20061029 15:12]:
Since grml seems to become more and more THE live-cd for admins, and maybe often being used for recovery purpose to save data from more or less "dead" boxes - did anybody think of taking a look at the BadRam Kernelpatch ? http://rick.vanrein.org/linux/badram/index.html
Yes, I'm aware of that patch.
[...]
Unfortunately, I don`t have personal experience with this patch (yet), but maybe there are people on this list who know that patch already !?
It exists for quite some time and a version for recent 2.6.18 kernel is available.
Also, there exists a spin-off project "BadMem" at http://badmem.sourceforge.net/
I'm not a real friend of out-of-tree code, especially if it replaces *existing* code from mainline. *If* such a patch is really desirable it should be sent to LKML and walk through the review cycle. Any single patch differing from mainline makes debugging problems harder, so I'm quite conservative in accepting patches to main grml-kernel.
thx && regards, -mika-

On Sun, Oct 29, 2006 at 03:02:15PM +0100, devzero@web.de wrote:
Description:
BadRAM: Linux kernel support for broken RAM modules Summary: This page proposes an approach to support RAMs with defective addresses, This may open interesting business perspectives, where those RAMs can be sold under a white label for less money rather than discarded of without any profit.
If you talk about business... Broken RAM always gets replaced by new modules, since this is mission critical and covered by warranty and/or service contracts. Additionally, "real" servers mirror RAM and have spare RAMs installed. So IMO this would only be useful for private use.
greets Jimmy
Teilnehmer (3)
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Andreas Gredler
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devzero@web.de
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Michael Prokop