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RE: MacOS X problems---Corrupt repository

From: Sander Striker <striker_at_apache.org>
Date: 2003-08-01 19:05:01 CEST

> From: sussman@collab.net [mailto:sussman@collab.net]
> Sent: Friday, August 01, 2003 6:58 PM

> Blair Zajac <blair@orcaware.com> writes:
>
> > To put this back on the radar screen, there has been a number of issues
> > with people using 4.1.25 on Linux/FreeBSD boxes that have had repositories
> > that end up being corrupted where the only way to recover is to restore
> > a backup copy.
>
> My recollection is that Sander Striker was having discussions with
> sleepycat folk, and that some deep issue was revealed. In almost all
> of these cases, a berkeley db table had switched 'type' for some
> reason; the sleepycat people revealed that this might happen if
> recovery is happening whilst something else changes the db. (Is this
> accurate, Sander?)

Let me dig up the mail. Note that a big chunk of communication was done by
cmpilato BTW.

What it basically comes down to is that a recover will recreate the environment.
Which means that if you modify the db while recovering you get an inconsistent
environment (wrong allocation counts etc).

Sander

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Received on Fri Aug 1 19:05:45 2003

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