linux-kernel - Re: Sharing disks amoung multiple software RAIDs

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Message-ID: <271684.86609.qm@web50210.mail.re2.yahoo.com>
Date:	Fri, 2 May 2008 07:13:45 -0700 (PDT)
From:	Alex Davis <alex14641@...oo.com>
To:	Richard Michael <rmichael-raid@...eofthenet.org>,
	Kasper Sandberg <lkml@...anurb.dk>,
	Helge Hafting <helge.hafting@...el.hist.no>
Cc:	linux-raid@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: Sharing disks amoung multiple software RAIDs

> > > Can you explain what you mean, exactly?
> > As an example, you have disks /dev/sd[abc]. /dev/md0 would be made 
> > from /dev/sda1, /dev/sdb1, and /dev/sdc1; /dev/md1 would be made
> > from /dev/sda2, /dev/sdb2, and /dev/sdc2.

> I've been watching this thread with interest, because I wanted
> clarification on what the OP meant.

> If by "sharing disks", the OP meant the above, I'm surprised (and
>  concerned) there's any question at all.  How is this anything other    > than the definition of "mirror"? 
md0 and md1 are both RAID 5 arrays, not mirrors.



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