1998-10-09 05:08:37

by Jan Pechanec

[permalink] [raw]
Subject: Re: stackable layers in filesytem

On Thu, 8 Oct 1998, Mike A. Harris wrote:

*>On Wed, 7 Oct 1998, Jan Pechanec wrote:
*>
*>> please, don't you know whether the newest kernels do have
*>>"stackable layer support" for filesystem as e.g FreeBSD has?
*>
*>What exactly is stackable layer support? Have you investigated
*>loopback filesystems? This might be what you are looking for,
*>and has been supported in Linux for quite some time.
*>

Generaly, see:

http://www.isi.edu/~johnh/PAPERS/Heidemann91a.html
http://www.isi.edu/~johnh/PAPERS/index.html

in FreeBSD, see 'man mount_null'

Loopback fs is similar to nullfs in FreeBSD, but nullfs is just an
,,application'', you can develop layer that does things like compressing,
ciphering etc.

Jan.

*>
*>
*>
*>
*>--
*>Mike A. Harris - Computer Consultant - Linux advocate
*>
*>Linux software galore: http://freshmeat.net
*>
*>

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Jan P E C H A N E C - Computing Center, Czech Technical University -
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