Date: Tue, 19 Sep 2006 13:52:45 -0400 (EDT)
From: Steve Cousins <cousins@limpet.umeoce.maine.edu>
Reply-To: cousins@umit.maine.edu
To: Shailendra Tripathi <stripathi@agami.com>
cc: "xfs@oss.sgi.com" <xfs@oss.sgi.com>
Subject: Re: swidth with mdadm and RAID6
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On Tue, 19 Sep 2006, Shailendra Tripathi wrote:

> >> Hi Shailendra,
> >> 
> >> I ran the program and it reports:
> >> 
> >> 	Level 6, disks=11 spare_disks=1 raid_disks=10
> >> 
> >> which looks good.   I don't understand why you got:
> >> 
> >> 	Level 5, disks=7 spare_disks=3 raid_disks=5
> >> 
> >> Why would it have 3 spare_disks?
> >
> Perhaps you are running more recent kernel than mine, and, spare_disks 
> now reports only actual spares. It did appear little weired that it 
> reported spare_disks as 3. get_array_info is changed in recent kernels 
> and that should explain this difference.

This is a 2.6.17 kernel.  So, with this in mind, is there a change that I
should try in libdisk/md.c?  Tim had suggested:

	s/nr_disks/raid_disks/

Would this be sufficient? Or should nr_disks be initialized as raid_disks
and then go into the switch clause?

Steve