linux-kernel - Re: [patch 4/6] ps3: Disk Storage Driver

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Date:	Sat, 16 Jun 2007 00:11:02 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	David Miller <davem@...emloft.net>
Cc:	Geert.Uytterhoeven@...ycom.com, dwmw2@...radead.org,
	axboe@...nel.dk, James.Bottomley@...elEye.com,
	linux-scsi@...r.kernel.org, linux-kernel@...r.kernel.org,
	linuxppc-dev@...abs.org, paulus@...ba.org
Subject: Re: [patch 4/6] ps3: Disk Storage Driver

> That sounds like a good idea for my virtual I/O case on
> Niagara too actually :-)

It was actually meant semi-seriously in that drivers/ata sits on top of
the abstract parts of drivers/scsi which James keeps asking for someone to
get split properly off and which would sort all these out.

> Another quirk I have to deal with is that under LDOMs you
> can export full disks and also just slices.  So I'll have
> to get down into the partition machinery to support that
> somehow.

If your slices don't fit the PC worldview you might want to look at
dmraid and just use device mapper to handle them. It is a lot more
flexible and we could actually bin all our partition code and use this
but for back compatibility.

Alan
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