[uml-devel] CowLoop

[uml-devel] CowLoop

[roland]

Hi !
I think this is interesting for UserModeLinux:

http://www.atconsultancy.nl/cowloop

CowLoop is a kernel level driver and gives CopyOnWrite devices.

There was some discussion a long time ago, about the annoyance not being able to mount a UML-Cowfile outside UML because of missing
kernel support.

Sure - you will not be able to mount a UML Cowfile with cowloop (should be incompatible format), but I think you will be able to use
a cowloop with uml.

This project doesn`t seem very popular - so maybe announcing it here should give it some attention.

regards
roland



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Re: [uml-devel] CowLoop

[Jeff Dike]

On Sat, Apr 16, 2005 at 12:13:26PM +0200, roland wrote:
> Hi !
> I think this is interesting for UserModeLinux:
> 
> http://www.atconsultancy.nl/cowloop
> 
> CowLoop is a kernel level driver and gives CopyOnWrite devices.
> 
> There was some discussion a long time ago, about the annoyance not being able to mount a UML-Cowfile outside UML because of missing
> kernel support.

I have it on my todo list to see how hard it would be to make it understand
UML COW files.  Haven't really done anything with that yet, though.

				Jeff


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Re: [uml-devel] CowLoop

[roland]

Hello Jeff ,
indeed it would be great if cowloop would support UML cowfiles.
Since i didn`t find a reference from uml mailinglist to cowloop, i thought it would be good to announce it here.

Did anyone try it yet ?
I had some problem with cowloop when using reiserfs - and the current maintainer seems quite busy.

regards
roland


----- Original Message ----- 
From: "Jeff Dike" <jdike@addtoit.com>
To: "roland" <for_spam@gmx.de>
Cc: <user-mode-linux-user@lists.sourceforge.net>; <user-mode-linux-devel@lists.sourceforge.net>
Sent: Saturday, April 16, 2005 3:48 PM
Subject: Re: [uml-devel] CowLoop


> On Sat, Apr 16, 2005 at 12:13:26PM +0200, roland wrote:
> > Hi !
> > I think this is interesting for UserModeLinux:
> >
> > http://www.atconsultancy.nl/cowloop
> >
> > CowLoop is a kernel level driver and gives CopyOnWrite devices.
> >
> > There was some discussion a long time ago, about the annoyance not being able to mount a UML-Cowfile outside UML because of
missing
> > kernel support.
>
> I have it on my todo list to see how hard it would be to make it understand
> UML COW files.  Haven't really done anything with that yet, though.
>
> Jeff
>



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Re: [uml-devel] CowLoop

[Steve Schnepp]

On Sat, Apr 16, 2005 at 06:16:55PM +0200, roland wrote:
> Did anyone try it yet ?

As usual with open source, many people say they'll do many things. So one
time I said that i'll eventually finish a little project ULDD, which is
an userspace loop device (such as lufs [1], but for block devices).

But then, i didn't have much interest in UML anymore [ I changed job :) ], 
and I crossed FUSD [2] which seems much more advanced at the time...

At the time I put some ugly piece of code online [3]. It was my first
attempt to create a kernel block driver, but unfortunatly, I didn't have
the time to investigate to port the driver to 2.6 :-(

[1] http://lufs.sourceforge.net/lufs/
[2] http://www.circlemud.org/~jelson/software/fusd/
[3] http://snide.free.fr/uldd/

	Steve

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