linux-kernel - Re: [code] Unlimited partitions, a try

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Message-ID: <20071006002919.0b32c8b9@the-village.bc.nu>
Date:	Sat, 6 Oct 2007 00:29:19 +0100
From:	Alan Cox <alan@...rguk.ukuu.org.uk>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Jan Engelhardt <jengelh@...putergmbh.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: [code] Unlimited partitions, a try

On Fri, 05 Oct 2007 15:11:52 -0700
"H. Peter Anvin" <hpa@...or.com> wrote:

> Jan Engelhardt wrote:
> > 15 partitions (at least for sd_mod devices) are too few.
> 
> Now when we have 20-bit minors, can't we simply recycle some of the 
> higher bits for additional partitions, across the board?  63 partitions 
> seem to have been sufficient; at least I haven't heard anyone complain 
> about that for 15 years.

This was proposed ages ago. Al Viro vetoed sparse minors and it has been
stuck this way ever since. If you have > 15 partitions use device mapper
for it. I'd prefer it fixed but its arguable that device mapper is the
right way to punt all our partitioning to userspace


Alan
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