From: Neil Brown <neilb@suse.de>
To: Kyle Moffett <mrmacman_g4@mac.com>
Date: Tue, 31 Jan 2006 13:01:57 +1100
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Message-ID: <17374.50453.727662.493504@cse.unsw.edu.au>
Cc: "H. Peter Anvin" <hpa@zytor.com>, klibc list <klibc@zytor.com>,
       Linux Kernel Mailing List <linux-kernel@vger.kernel.org>,
       linux-raid@vger.kernel.org
Subject: Re: Exporting which partitions to md-configure
In-Reply-To: message from Kyle Moffett on Monday January 30
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	<17374.47368.715991.422607@cse.unsw.edu.au>
	<859CB9D0-A1D3-4931-9D9F-96153D0F3E1B@mac.com>
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On Monday January 30, mrmacman_g4@mac.com wrote:
> On Jan 30, 2006, at 20:10, Neil Brown wrote:
> > On Monday January 30, hpa@zytor.com wrote:
> >> Any feeling how best to do that?  My current thinking is to export  
> >> a "flags" entry in addition to the current ones, presumably based  
> >> on "struct parsed_partitions->parts[].flags" fs/partitions/ 
> >> check.h), which seems to be what causes md_autodetect_dev() to be  
> >> called.
> >
> > I think I would prefer a 'type' attribute in each partition that  
> > records the 'type' from the partition table.  This might be more  
> > generally useful than just for md.  Then your userspace code would  
> > have to look for '253' and use just those partitions.
> 
> Well, for an MSDOS partition table, you would look for '253', for a  
> Mac partition table you could look for something like 'Linux_RAID' or  
> similar (just arbitrarily define some name beginning with the Linux_  
> prefix), etc.  This means that the partition table type would need to  
> be exposed as well (I don't know if it is already).

Mac partition tables doesn't currently support autodetect (as far as I
can tell).  Let's keep it that way.

NeilBrown
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