database corruption

[Fred Yankowski]

On Thu, May 29, 2003 at 03:02:37PM +0200, Matthias Andree wrote:
> People who see that bogoutil -d or db_dump loops can try to rescue data
> (no promises though) from their data bases with:
> 
> cp goodlist.db goodlist.db.bak
> db_dump -r goodlist.db >good.raw
> db_load good.new.db <good.raw
> rm -f goodlist.db
> bogoutil -d good.new.db | bogoutil -l goodlist.db
> rm -f good.new.db good.raw

Thank you for that procedure.  I ran it over my spamlist.db and now
db_verify reports no errors on it.

But what is that penultimate step for?  That is, what good is this:

	bogoutil -d good.new.db | bogoutil -l goodlist.db

I used db_dump to dump good.new.db and goodlist.db to raw data after
the above.  Comparing that raw data with diff gives results like this:

	6c6
	<  01000000
	---
	>  0100000041a43101
	8c8
	<  02000000
	---
	>  0200000041a43101

It looks like the db_dump / db_load sequence loses data that is
recovered somehow by doing the "bogoutil -d" / "bogoutil -l" sequence.
What is going on there?

-- 
Fred Yankowski      fred at ontosys.com           tel: +1.630.879.1312
OntoSys, Inc	    PGP keyID: 7B449345        fax: +1.630.879.1370
www.ontosys.com     38W242 Deerpath Rd, Batavia, IL 60510-9461, USA