Re: [9fans] Changelogs & Patches?

[erik quanstrom <quanstro@quanstro.net>]

On Wed Jan 21 01:40:13 EST 2009, steve@quintile.net wrote:
> > ... fossil does have the functionality to serve two
> > different file systems from two different disks, but i don't  think
> > anyone has used that ...
>
> I do this, 'main' backed up by venti and 'other' which holds useful stuff
> that needn't be backed up, e.g. RFCs, cdrom images, datasheets etc. This is
> accessed via 9fs juke as an homage to the CDROM jukebox that once provided
> a similar filesystem at the labs.

actually, it was a hp jukebox that had mo disks.
alliance (neé plasmon) makes 60gb udo2 drives
  http://www.plasmon.com/archive_solutions/udodrives.html
and these libraries
  http://www.plasmon.com/archive_solutions/glibrary.html
the media are supposedly good for 50 years.

www.quanstro.net/plan9/disklessfs.pdf describes coraid's
worm-replacement strategy.  it is both better (offsite,
very fast access) and not better (the media are less reliable
and not write-once).

it would be neat to have a filesystem built as
filsys main cpe2.0"kcache"{e2.1jw0w1}
all the speed of disks and a perminant record,
but clearly not very cost effective.  and direct-
attach storage doesn't like the right place for
the worm.  it should be offsite.

- erik