Invalidating.. Since there are two alternative solutions (memmap and
grub options) and it seems like interest upstream is slowing...
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Status: Triaged = Invalid
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Hi,
Can someone with defective memory test this works as described?
I'm one of the GRUB developers. We've tested this feature, in fact I
tested it myself, I've been using it on my laptop for several months
with no problem whatsoever.
If so, we should update the community documentation:
So, shall we mark this bug as Invalid then, if the feature exists in
GRUB already?
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Grub2 has a BadRAM option. It looks like the default /etc/default/grub
file on Debian Squeeze explains it's use, along with the Grub2
documentation: http://www.gnu.org/software/grub/manual/grub.html#badram
Since we now use Grub2, this is probably the correct way to handle and
document this
debain already has a package.
http://packages.debian.org/stable/devel/kernel-patch-badram
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Badram has other uses for eliminating issues like memory holes, etc.
I have an Intel 865GLC motherboard. There are lockups if memory around
4077Mb is addressed - even though there's only 2048Mb onboard.
Memtest86+ reports the errors when scanning memory, then freezes solid.
I want to try and
Would that be part of SWAP space or something else?
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I wrote a howto:
http://gquigs.blogspot.com/2009/01/bad-memory-howto.html
It is for all intensive purposes just as easy as using the badRAM patch.
(And I have been running with the memmap options for some time now with
no issues).
I'm thinking about closing this bug, does anyone still have a use
Bumping/looking for comments on this one .
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Well, no need for automation at the moment. A simple boot option and a
small howto on converting memtest output to that boot option would be
totally sufficient for me right now.
Will this be in Intrepid?
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You
A very neat idea! I agree this is really useful, especially in cases
such as soldered memory where you can't just buy new memory (which is
a pretty ignorant argument to begin with anyway).
From reading the mailing list article from gQuigs, it sounds like memmap
works fine and is already included,
Tom: Unfortunately that posting is it for now...
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Pivo, that posting is hardly a howto IMHO.
So is there any kerneloption to map bad memory in 2.6.25 or not?
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An interesting thing mentioned in one of the pages is
http://rick.vanrein.org/linux/badram/download.html
Specifically this part :-
BadRAM in mainstream kernels? I have submitted the patch to the kernel
and memory management maintainers on March 2nd, 2008. I am looking
forward to reporting good
GQuigs, cannot understand what u mean by that. A link to the lkml where
you read whatever u read would be helpful.
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They submitted it and then discovered memmap could do some (most?) of what
badram does apparently. The whole thread is an interesting read:
http://lkml.org/lkml/2008/3/11/319
Memmap can do what badram does, (I think) but I have yet to really get it
working. I would love to see the badram option
Oh wow!
I must not have looked hard enough(.!!) as all I could find was badram. I was
shocked that nothing like it was packaged or anything. Someone, through a forum
system, somewhere, claimed that badram was my only option in software, and I
believed it.
And last but not least, if it's worth
Yea.. I was reading the lkml and apparently the creators of badram hadn't
heard of it either.
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If I get it right, there's no need for badram patch unless bad bytes are
spread all over the map. With a bit more manual effort one can use
memmap=exactmap parameter already present in current kernels.
A howto for 2.6.25 kernels:
http://groups.google.com/group/fa.linux.kernel/msg/d90e920265afafd8
I have a use for this, it's worth a couple of hundred dollars to me.
One day perhaps the boot managers, kernel and memtest will all work
seamlessly together to identify, flag and dishonour bad ram (meaning, by
downloading a metapackage and running memtest86, perhaps you could
automatically flag
That would be cool. Subscribing to the request.
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** Changed in: ubuntu
Importance: Undecided = Wishlist
Status: New = Triaged
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