doveadm-server uses 100% cpu and never finishes, dsync backup also never finishes

[Patrick van Zweden]

Hi All,

Problem solved, turned out the index files were the problem in one mailbox. Deleting them solved the problem

Patrick
--
Patrick van Zweden




> On 08 Dec 2016, at 21:28, Patrick van Zweden <patrick at soverin.net> wrote:
> 
> Hi Guys,
> 
> I have a quite interesting problem.
> 
> I have two servers that replicate to each-other. Suddenly one of the accounts is starting to eat a very large amount of disk space on, what basically is the replica for this account. doveadm-server seems to hang and keeps on filling the disk.
> I came across this message in the logs:
> 
> Dec  8 07:36:40 <server> dovecot: dsync-server(<account>): Fatal: pool_system_malloc(6291528): Out of memory
> Dec  8 07:36:40 <server> dovecot: dsync-server(<account>): Fatal: master: service(doveadm): child 883 returned error 83 (Out of memory (service doveadm { vsz_limit=256 MB }, you may need to increase it) - set DEBUG_OUTOFMEM=1 environment to get core dump)
> 
> I’ve increased the vsz_limit to 5G so it has stopped complaining. Only… the process never seems to finish. I’ve tried to export the mailbox using dsync:
> dsync -Dv backup -u 'xxxxx' sdbox:/tmp/patrick_export/
> However this process never finishes either. It looks like it stays in one of the mailboxes and keeps on trying to copy messages.
> 
> Format of the mailbox is sdbox
> Version of dovecot on all servers: 2.2.9
> 
> Any pointers for solving this problem?
> 
> Kind regards,
> 
> Patrick
> 
> --
> Patrick van Zweden
> 
> 
> 

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