Re: (ITS#7775) LMDB terminates Postfix daemon process without logfile record

[wietse@porcupine.org]

Hallvard Breien Furuseth:
> Drafted a branch "mdb/assert" in
> <http://folk.uio.no/hbf/OpenLDAP/mdb.git/> and on Ada, based
> roughly on Howard's original message to you.  I didn't know about
> that at first, which has caused some confusion.
> 
> So the callback usually receives an env after all, and a NULL
> context since I don't know what Howard intended there.
> 
> Howard, do I push this?  Feel free to grab it and tweak a bit:)
> 
> env can be NULL. mdb_env_set_assert(env,cb) also sets a static
> variable with the callback for the asserts which do not know of an
> env.  Could throw away that part later.  Currently it only applies
> to one assert().
> 
> The branch also invalidates a transaction on any page allocation
> error, since the callers do not always clean up afterwards.  Too
> aggressive, can be reverted after updating the callers. But for
> now it means MDB_MAP_FULL & co won't let the user commit an
> inconsistent transaction.

Thanks, this is more improvement than I asked for. I don't want to
slip my schedule, and to avoid last-minute surprises, I will postpone
the review and impact test of these improvements after the stable
Postfix release 2-3 weeks from today.

	Wietse