Potential History file corruption?

Alex Kiernan alexk at demon.net
Sat Jul 21 06:19:30 UTC 2001

Russ Allbery <rra at stanford.edu> writes:

> Alex Kiernan <alexk at demon.net> writes:
> > Russ Allbery <rra at stanford.edu> writes:
> >> We're separately having all kinds of problems with BerkeleyDB with
> >> Cyrus's IMAP server.  :/ I'm really starting to believe that the
> >> problems with ovdb are actually BerkeleyDB problems.
> > Thats *very* interesting... are you seeing similar kinds of symptoms?
> What we've been getting is that, after a couple of days of running,
> everything that tries to access the database just hangs.  Including the
> program that's supposed to break deadlocks.

Sounds very similar, its likely stuck in __db_mutex_lock/unlock.

> I don't remember enough of the threads here to remember if that's
> also one of the various symptoms people are seeing.

If Cyrus is good about logging errors, there's probably an EINVAL
returned somewhere from one of the ->put calls just before it locks

> Some kind of locking problem somewhere, I'm sure, but we've not tracked it
> down yet.

If you can build with Purify, it'd be interesting to know if you're
seeing the same kind of uninitialised reads as I'm seeing.

Alex Kiernan, Principal Engineer, Development, Thus PLC

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