[Server-devel] ejabberd crash

Robert McQueen robert.mcqueen at collabora.co.uk
Fri Feb 8 05:19:20 EST 2008

Hi John,

John Watlington wrote:
> ejabberd decided to eat its database again, on schoolserver.laptop.org
> (http://dev.laptop.org/ticket/6365)
> The error (from sasl.log) is:
> Error reading Mnesia database
> A number of laptops (25 or so) were registered with
> schoolserver.laptop.org today.
> Any recommendations on how to recover without nuking the
> database ?    Any Mnesia experts out there ?

The contract between OLPC and Process One is in place to look at our
ejabberd issues. I've CC'd Jérôme at P1 so he might consider having
somebody look at this issue for us if there's time.

Jérôme, would you or one of your staff like access to either of our
servers on jabber.laptop.org (where most development laptop images
connect to by default, so 100s of users), and schoolserver.laptop.org (a
test school server at the OLPC office) for debugging?

> And a relevant question: what will telepathy do in this case ?   Will it
> automatically
> re-register if a laptop's jabber account is deleted ?

Currently no, as Daf says we have a patch for it in #6295. Might it be
worth raising the priority of this patch for Update 1? dwmw2 said there
was also a concern in Mongolia with laptops (particularly teachers)
moving between identically-named but distinct servers (which is pretty
broken, because it means we can never connect those servers together,
but that's an issue for later I guess...).

> wad


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