Re: bayes db - export/import

[Justin Mason <jm...@jmason.org>]

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Rodney Green writes:
> Hello,
> 
> I'm setting up a temporary mail server so I can do some work on the
> regular production machine, without interrupting service.
> 
> I'd like to copy the bayes db to the temporary mail server so it can
> continue to be used and continue learning.
> 
> Will I need to do some special export/import procedure or will I be
> able to just copy the db files into the directory, set permissions and
> be good to go?

If it's the same architecture, and the same OS release, you can
probably just copy.   For safety I'd recommend using sa-learn --backup
and --restore.

- --j.
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Re: bayes db - export/import

[Nix <ni...@esperi.org.uk>]

On Fri, 28 Jan 2005, Justin Mason stated:
> Rodney Green writes:
>> I'd like to copy the bayes db to the temporary mail server so it can
>> continue to be used and continue learning.
>> 
>> Will I need to do some special export/import procedure or will I be
>> able to just copy the db files into the directory, set permissions and
>> be good to go?
> 
> If it's the same architecture, and the same OS release, you can
> probably just copy.   For safety I'd recommend using sa-learn --backup
> and --restore.

You shouldn't need to do that. Berkeley DB databases are byte-order-
independent (well, they can be read and written by machines with any
byte order), and the things SA puts in them are byte-order-independent
too.

As evidence, I'm sharing a Bayes database between an i586, two
UltraSPARCs, GNU/Linux (x2) and Solaris (x1) with no trouble. That's
multiple architectures and multiple OSes; no problems are evident. :)


If you *do* need to do a backup-and-restore, it's a sign that
something's compromised the byte-order-independence of what's being put
in there: probably the wrong string as argument to a pack() in
BayesStore.

-- 
`Blish is clearly in love with language. Unfortunately,
 language dislikes him intensely.' --- Russ Allbery

Re: bayes db - export/import

[Rodney Green <ro...@gmail.com>]

On Fri, 28 Jan 2005 11:48:32 -0800, Justin Mason <jm...@jmason.org> wrote:
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> Hash: SHA1
> 
> 
> Rodney Green writes:
> > Hello,
> >
> > I'm setting up a temporary mail server so I can do some work on the
> > regular production machine, without interrupting service.
> >
> > I'd like to copy the bayes db to the temporary mail server so it can
> > continue to be used and continue learning.
> >
> > Will I need to do some special export/import procedure or will I be
> > able to just copy the db files into the directory, set permissions and
> > be good to go?
> 
> If it's the same architecture, and the same OS release, you can
> probably just copy.   For safety I'd recommend using sa-learn --backup
> and --restore.
> 

Thanks Justin. I'll use sa-learn --backup and --restore. 

Rod