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Re: [PATCH] Allow userspace block device implementation

From:  Alan Cox <alan-AT-lxorguk.ukuu.org.uk>
To:  Zachary Amsden <zamsden-AT-redhat.com>
Subject:  Re: [PATCH] Allow userspace block device implementation
Date:  Tue, 28 Jul 2009 11:27:34 +0100
Message-ID:  <20090728112734.5a75752d@lxorguk.ukuu.org.uk>
Cc:  Tejun Heo <tj-AT-kernel.org>, Peter Zijlstra <peterz-AT-infradead.org>, linux-kernel-AT-vger.kernel.org, torvalds-AT-linux-foundation.org, axboe-AT-kernel.dk, hch-AT-infradead.org, akpm-AT-linux-foundation.org, Paul.Clements-AT-steeleye.com, tytso-AT-mit.edu, miklos <miklos-AT-szeredi.hu>
Archive-link:  Article

> BTW, implementing something like this via FUSE would be extremely
> unpleasant.  I'd need another layer on top, probably via the loop
> device, to get to the actual partitions of the block devices.

Use device mapper. Really we should shoot all the partition code in the
kernel but the back compatibility is a bit tricky. We don't actually need
the partition code any more.


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