mkinitrd unification across distributions
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From: Neil Brown <neilb-l3A5Bk7waGM@public.gmane.org>
To: Dan Williams <dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: David Zeuthen <david-o55+BOBDEFg@public.gmane.org>,
	Hans de Goede <hdegoede-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	initramfs <initramfs-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	linux-hotplug-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, "Danecki,
	Jacek" <jacek.danecki-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
	Harald Hoyer <harald-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
	Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Subject: Re: RFC: mdadm and bringing up raid sets from initrd (dracut)
Date: Thu, 16 Jul 2009 20:56:27 +1000	[thread overview]
Message-ID: <19039.1883.943995.16962@notabene.brown> (raw)
In-Reply-To: message from Dan Williams on Wednesday July 15

On Wednesday July 15, dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org wrote:
> 
> mdadm-3.0 has facilities to prevent assembly of certain metadata types
> [1] or arrays with certain uuids [2].  I wonder if we also need a
> facility to prevent auto-assembly of arrays *not* listed in
> mdadm.conf?  So the mdadm.conf file installed in the initramfs would
> only identify the root array and all other randomly identified md
> devices would be ignored (rather than assembled with a foreign name).
> 
> Thoughts?

This is exactly the functionality that the 'AUTO' line provides.
Arrays that are listed in mdadm.conf will always be assembled when they
are found.
Arrays that are not listed may or may not be assembled depending on
their metadata type and the setting of 'AUTO'.

So
  AUTO -all

will disable all auto-assemble of arrays that are not listed in
mdadm.conf.

NeilBrown
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  parent reply	other threads:[~2009-07-16 10:56 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2009-07-14 10:59 RFC: mdadm and bringing up raid sets from initrd (dracut) Hans de Goede
2009-07-14 13:39 ` Doug Ledford
     [not found]   ` <1955210A-EF27-479F-8C58-BA4FA9018A56-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-07-14 15:02     ` Hans de Goede
2009-07-14 14:14       ` Doug Ledford
     [not found]         ` <D758972F-0E5A-4860-9011-6B2DA1FA771A-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-07-14 15:00           ` David Zeuthen
2009-07-16 10:56             ` Harald Hoyer
     [not found] ` <4A5C6501.3080607-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-07-14 14:30   ` David Zeuthen
     [not found]     ` <1247581847.1991.16.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2009-07-15 18:47       ` Dan Williams
2009-07-16  0:16         ` Jeremy Katz
     [not found]           ` <20090716001651.GB45537-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
2009-07-16  7:11             ` Victor Lowther
2009-07-16 10:56         ` Neil Brown [this message]
2009-07-16 11:09         ` Neil Brown

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