linux-kernel - Re: [PATCH] Allow NBD to be used locally

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Message-Id: <141350930@web.de>
Date:	Sat, 02 Feb 2008 18:31:48 +0100
From:	devzero@....de
To:	Jan Engelhardt <jengelh@...putergmbh.de>
Cc:	Laurent.Vivier@...l.net, linux-kernel@...r.kernel.org, pavel@....cz
Subject: Re: [PATCH] Allow NBD to be used locally

> How will that work? Fuse makes up a filesystem - not helpful
> if you have a raw disk without a known fs to mount.

take zfs-fuse or ntfs-3g for example. 
you have a blockdevice or backing-file containing data structures and fuse makes those show up as a filesystem.
i think vmware-mount is not different here.

> This still does not account for compressed disk images, for example.
unfortunately, not




> 
> 
> On Feb 2 2008 15:40, devzero@....de wrote:
> >
> >>In fact, VMware uses local nbd today for its vmware-loop helper
> >>utility, most likely because of the above-mentioned reasons. (Though
> >>it quite often hung last time I tried.)
> >
> >seems this will go away. recent vmware versions (e.g. server 2.0
> >beta) have a fuse based replacement for that.
> 
> How will that work? Fuse makes up a filesystem - not helpful
> if you have a raw disk without a known fs to mount.
> 
> >>So what we have is non-linearity -- LBA 22 comes after LBA 40 -- loop
> >>does not deal with that.
> >
> >maybe dm-loop does? http://sources.redhat.com/lvm2/wiki/DMLoop
> 
> This still does not account for compressed disk images, for example.
> 
> 


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