From mboxrd@z Thu Jan  1 00:00:00 1970
Message-ID: <3BA77052.C4E620DA@princeton.edu>
From: Martin Harriss <martin@Princeton.EDU>
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To: 9fans@cse.psu.edu
Subject: Re: [9fans] writable optical media
References: <20010918130425.E9EC219A7C@mail.cse.psu.edu>
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Date: Tue, 18 Sep 2001 12:03:30 -0400
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presotto@plan9.bell-labs.com wrote:
>
[ stuff deleted... ]
>
> I guess the moral is: optical is nice, but when the lifetime of
> each round of technology is around 5 years, you have to recopy
> every few years anyways since the devices to read the indestructible
> media atrophy.  Also, the density goes up fast enough that
> copying every few years means that you can always have everything
> on line.

Has anyone done any work on integrating "old dumps" into a new file
server?  I know the dumps are supposed to be immutable, but it would be
nice to set up a new file server using the latest technology and be ably
to migrate one's old dumps seamlessly into the new server.  This would
be particularly useful when migrating to a bigger dump device.  Can this
maybe be done just by copying the data and then fudging the size in the
superblock?

Martin