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Re: GRUB and the risk of block list corruption in extX

From: Martin Wilck
Subject: Re: GRUB and the risk of block list corruption in extX
Date: Tue, 19 Feb 2013 18:17:46 +0100
User-agent: Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130110 Thunderbird/17.0.2

>> Am I understanding correctly that the user mistake you describe must be
>> some manipulation of "core.img" itself (e.g. running grub2-mkimage but
>> now grub2-setup, which would classify as "mistake" in a blocklist setup)?
> Yes. Such kind of mistakes. Or deleting GRUB and restoring it from backup.

I agree that this is a serious scenario that everybody using block lists
should be wary about.

But I am not fully convinced that it justfies the strong warning
grub2-setup emits, let alone the conclusions the Fedora team drew from
it. After all, this scenario requires the user to make a serious mistake
as root, and we all know that this can have all kinds of really bad

AFAICS, for extX/Linux at least, there is no risk scenario that doesn't
involve this kind of serious user mistake.


Dr. Martin Wilck
PRIMERGY System Software Engineer
x86 Server Engineering

Fujitsu Technology Solutions GmbH
Heinz-Nixdorf-Ring 1
33106 Paderborn, Germany
Phone:                  ++49 5251 525 2796
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