[gentoo-user] Re: Unionfs for 2.6.20

[Ali Polatel]

burlingk@×××××××××.mil <burlingk@×××××××××.mil> yazmış:
>
>
> > -----Original Message-----
> > From: Norberto Bensa [mailto:nbensa@×××.net]
> > Sent: Friday, June 01, 2007 9:29 AM
> > To: gentoo-user@l.g.o
> > Subject: Re: [gentoo-user] Re: Unionfs for 2.6.20
> >
> >
> > Ali Polatel wrote:
> > >  You should use unionfs version 2.0 which is a part of -mm
> > tree. You
> > > can either get mm-sources or manually patch your kernel.
> > Have a look
> > > at http://www.am-utils.org/project-unionfs.html for more info..
> >
> > But there's no unionfs-utils unless you're using sabayon overlay...
> >
> > Regards,
> > Norberto
> > --
> > gentoo-user@g.o mailing list
>
> I have seen many people mentioning UnionFS.
> What exactly is it, and what does it do?
> (:P Besides the statement that it is an FS.)

quoting from wikipedia[1]:
    UnionFS is a Linux filesystem service which implements
a union mount for Linux file systems. It allows files and directories of
separate file systems, known as branches, to be transparently overlaid,
forming a single coherent file system.

    For example you can put your portage tree in a squashfs filesystem 
- which you can only mount ro - so that it'll take little space and create
a unionfs with it and a directory in /dev/shm to keep track of changes
between syncs[2].

[1]: http://en.wikipedia.org/wiki/Unionfs
[2]: http://dev.gentoo.org/~jokey/squashed-portage-tree/


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ali polatel (hawking)
Keep America beautiful.  Swallow your beer cans.
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