replicator: Panic: data stack: Out of memory when allocating 268435496 bytes

[Gerben Wierda]

> On 6 Jan 2023, at 08:53, Aki Tuomi <aki.tuomi at open-xchange.com> wrote:
> 
> 
> 
> On January 6, 2023 3:56:39 AM GMT+02:00, Gerben Wierda <gerben.wierda at rna.nl> wrote:
>> One step further in my quest to create a replacement mail server.
>> 
>> I now have my old mail server (2.3.19.1, macOS + MacPorts) and my new (2.3.20, Alpine Linux, Docker, apk package). When I turn on replication it works, but, after a while I see:
>> 
>> Jan 06 00:50:31 replicator: Panic: data stack: Out of memory when allocating 268435496 bytes
>> Jan 06 00:50:32 replicator: Fatal: master: service(replicator): child 133 killed with signal 6 (core dumped)
>> Jan 06 00:50:32 lmtp(pid 195 user sysbh): Warning: replication(sysbh): Sync failure: 
>> Jan 06 00:50:32 lmtp(pid 195 user sysbh): Warning: replication(sysbh): Remote sent invalid input: -
>> 
>> I've removed synchronous operation for now (found a message on the net suggesting that) but is this known and what does it mean?
>> 
>> Gerben Wierda (LinkedIn <https://www.linkedin.com/in/gerbenwierda>)
>> R&A IT Strategy <https://ea.rna.nl/> (main site)
>> Book: Chess and the Art of Enterprise Architecture <https://ea.rna.nl/the-book/>
>> Book: Mastering ArchiMate <https://ea.rna.nl/the-book-edition-iii/>
>> 
> 
> Dovecot default memory limit is 256M. You should probably set
> 
> service replicator {
>  vsz_limit = 2G
> }
> 
> because replicator might have to use more memory, especially for larger indexes. 
> 
> Aki

That is a good tip as well. 

I had followed this bit of experience from someone else: https://marc.info/?l=dovecot&m=164438199727640 <https://marc.info/?l=dovecot&m=164438199727640>, haven't seen any err message since. But that might be because they are in sync now and both sides are aware. Can I trigger full replication again so I can test?

Gerben
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