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Re: ShadowFs

From: Stefan Karrmann
Subject: Re: ShadowFs
Date: Fri, 7 Sep 2001 16:39:04 +0200
User-agent: Mutt/1.2i

Marcus Brinkmann schrieb folgendes am Fri, Sep 07, 2001 at 03:56:06PM +0200:
> On Fri, Sep 07, 2001 at 09:52:59AM +0200, Stefan Karrmann wrote:
> > By the recent discussion I got the impression that it is a filesystem,
> > but a single shadow directory would be easier and - in most cases -
> > sufficient.

I was thinking of merging bin directories:

$ settrans ~/bin shadow-dir /bin ~/bin.real ~my-friend/bin.real

> I am not sure what applications you are thinking of.  However, the type of
> applications I am thinking of require all directories to be merged.
> $ settrans /cdrom /hurd/isofs /dev/cdrom
> $ settrans /tmp/space /hurd/tmpfs 64M
> $ settrans /live /hurd/shadowfs /cdrom /tmp/root
> And then boot from /live (which is not possible right now because of a
> limitation in our boot procedure, it should be possible to pass existing
> ports as the root directory port to the booting hurd).  Or use chroot.
> Then you have a live CD ROM system.

You are right, there IS a reason for shadowfs.

> $ settrans ~/space /hurd/ext2fs ~/image
> $ settrans ~/root /hurd/shadowfs / ~/space
> And you have a copy of the system which you can boot/chroot, and where you 
> have
> write permission to install more packages etc...
> $ make install prefix=/tmp/install-root
> $ settrans /tmp/root / /tmp/install-root
> And you can test the installation in /tmp/root before installing it in the
> system.
> Thanks,
> Marcus

Stefan Karrmann

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