Bug#737951: mdadm: udev rules files ignores raid=noautodetect kernel parameter

[Michael Prokop]

Hi,

thanks for the fast reply, Michael

* Michael Tokarev [Fri Feb 07, 2014 at 11:36:46AM +0400]:
> 07.02.2014 11:21, Michael Prokop wrote:

> > It would be nice if there would be some way (maybe just checking for
> > raid=noautodetect in /proc/cmdline?) to disable auto assembly
> > without having to manually delete/override the udev file.

> I don't think that using raid=noautodetect is a good way of doing
> this.  It is for the really obsolete in-kernel array assembly, and
> it is described as such in the documentation you quoted above.

Right

[...]
> None of these parameters, at my point of view, should be considered
> after pre-boot is done and we're in the main system.  If you're
> talking about main udev rules of mdadm, I disagree, there should
> be entirely separate option, if at all.

> What is your usage case?  What are you trying to achieve?
[...]

My goal is to support booting a live system (like http://grml.org/)
in a way which *prevents* auto assembling under all circumstances.
This is relevant e.g. for data rescue and forensics tasks.

regards,
-mika-
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