Re: Public SFS servers

Unfortunately I cannot read Japanese, but you might be interested in
using our SFS read-only file system for secure mirroring of content on
untrusted replicas.

The SFSRO code resides in the CVS repository, but it's not yet in the
official distribution.  A client mounts an SFSRO file system much like
a normal SFS file system.  The file path is a plain, old
self-certifying path.  Untrusted replicas (e.g., volunteers) then
serve the "mirrored" content.

See http://www.pdos.lcs.mit.edu/papers/sfsro.html for technical details.

If you're interested in trying the code, email me personally or read
through the rough documentation on
http://pdos.lcs.mit.edu/cgi-bin/cvsweb.cgi/~checkout~/sfs1/sfsrodb/README?;cvsroot=sfs

--------
Kevin E. Fu ([email protected])

>Martin,
>
>Thank you for your reply.
>
> >>From: Martin <[email protected]>
> >>Subject: Re: Public SFS servers (Re: SFS-KNOPPIX)
> >>
> >>> The boot time of SFS-KNOPPIX seems to depend on latency. The boot
> >>> time is 5 minutes in Japan but 30 minutes in US. We can prepare three
> >>> SFS sites in Japan but it is too far from US and EU.
> >>> This topic is discussed in the KNOPPIX Forum.
> >>>     http://www.knoppix.net/forum/viewtopic.php?t=14904
> >>> 
> >>> Can we use SFS server on PlanetLab?
> >>> Or is there any good solution? Can we use proxy for SFS?
> >>Given that SFS makes use of strong host authentication and crypto I
> >>guess it would have to be a mirror rather than a proxy - although a
> >>proxy is an interesting idea.  You might be able to persuade some of the
> >>more free software friendly mirrors to start providing an SFS service -
> >>would certainly be useful.
>
>We kept three Mirror SFS servers in Japan.
>The sites are Univ. of Tsukuba, Alpha-systems Inc. and AIST(Original Sever).
>
>They are enough for Japanese users because latency is short.
>Unfortunately latency problem comes up outside Japan.
>
>We want to know practical examples of world wide mirroring of SFS servers.
>How about SFS servers for GRID?
>  http://www.biogrid.jp/e/research_work/gro1/gsi_sfs/
>
>Our requested specifications are anonymous access, and Read-Only File
>System on Internet.
>