dovecot and broken uidlist

[Maciej Milaszewski]

Hi
I use lmtp and you ?

On 19.01.2021 10:45, Alessio Cecchi wrote:
>
> Hi Maciej,
>
> I had the same issue when I switched dovecot backend from Cento 6 to
> Centos 7.
>
> Also my configuration is similar to you, Dovecot Direcot, Dovecot
> backend that share Maildir via NFS on NetApp.
>
> For local delivery of emails are you using LDA or LMTP? I'm using LDA.
>
> Let me know.
>
> Thanks
>
> Il 13/01/21 15:56, Maciej Milaszewski ha scritto:
>> Hi
>> I have been trying resolve my problem with dovecot for a few days and I
>> dont have idea....
>>
>> My environment is: dovecot director+5 dovecot guest
>>
>> dovecot-2.2.36.4 from source
>> Linux 3.16.0-11-amd64
>> storage via nfs (NetApp)
>>
>> all works fine but when I update OS from debian 8 (kernel 3.16.x) to
>> debian 9 (kernel 4.9.x ) sometimes I get random in logs:
>> Broken dovecot-uidlist
>>
>> examle:
>> Error: Broken file
>> /vmail2/po/pollygraf.xxx_pg_pollygraf/Maildir/dovecot-uidlist line 88:
>> Invalid data:
>>
>> (for random users - sometimes 10 error in day per node, some times more)
>>
>> File looks ok
>>
>> But if I change kernel to 3.16.x problem with "Broken file
>> dovecot-uidlist"  - not exists
>> if turn to 4.9 or 5.x - problem exists
>>
>> I have storage via nfs with opions:
>> rw,sec=sys,noexec,noatime,tcp,hard,rsize=65536,wsize=65536,intr,nordirplus,nfsvers=3,tcp,actimeo=120
>> I tested with "nocto" or without "nocto" - nothing changes ......
>>
>> nfs options in node:
>> mmap_disable = yes
>> mail_fsync = always
>>
>> I bet the configuration is correct and I wonder why the problem occurs
>> with other kernels
>> 3.x.x - ok
>> 4.x - not ok
>>
>> I check and user who have problem did not connect to another node in
>> this time
>>
>> I dont have idea why problem exists on the kernel 4.x but not in 3.x
>>
>>
> -- 
> Alessio Cecchi
> Postmaster @ http://www.qboxmail.it
> https://www.linkedin.com/in/alessice


-- 
Maciej Miłaszewski
Starszy Administrator Systemowy
IQ PL Sp. z o.o.

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