From: Neil Brown <neilb@suse.de>
To: Mario 'BitKoenig' Holbe <Mario.Holbe@TU-Ilmenau.DE>
Cc: linux-raid@vger.kernel.org
Subject: Re: turn off auto assembly
Date: Fri, 3 Dec 2010 12:30:09 +1100 [thread overview]
Message-ID: <20101203123009.0aa23102@notabene.brown> (raw)
In-Reply-To: <slrnifg359.9qh.Mario.Holbe@darkside.dyn.samba-tng.org>
On Thu, 2 Dec 2010 22:16:25 +0100 Mario 'BitKoenig' Holbe
<Mario.Holbe@TU-Ilmenau.DE> wrote:
> Stefan /*St0fF*/ Hübner <stefan.huebner@stud.tu-ilmenau.de> wrote:
> > Now I have the effect that upon plugging in drives that formerly were
> > part of an array, the md_mod modules gets loaded and tries to
> > auto-assemble arrays. This disturbs the diagnosis.
> > I've tried raid=noautodetect as kernel commandline, and I grepped the
> > source for the MODULE_PARM_DESC macro, which yielded no (useful) result.
> > This "automagic" behaviour happens since 2.6.36.
>
> Are you sure this autodetection is triggered by the module?
> And are you sure this behaviour is bound to this specific kernel
> version?
>
> In-Kernel auto-assembly is usually not active when md is compiled as
> module. Probably in your case this is some udev-triggered assembly?
s/usually not/never/
With a sufficiently recent mdadm, you can put
AUTO -all
in mdadm.conf to disable auto-assembly.
Alternately, find the udev rule (/lib/udev/rules.d/64-md-something) and
comment out the bit where it runs "mdadm -I" or "mdadm --incremental".
NeilBrown
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next prev parent reply other threads:[~2010-12-03 1:30 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-12-02 19:28 turn off auto assembly Stefan /*St0fF*/ Hübner
2010-12-02 21:16 ` Mario 'BitKoenig' Holbe
2010-12-03 1:24 ` Stefan Hübner
2010-12-03 1:30 ` Neil Brown [this message]
2010-12-06 21:52 ` Stefan Hübner
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