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<p>Hi Maciej,</p>
<p>I had the same issue when I switched dovecot backend from Cento 6
to Centos 7.</p>
<p>Also my configuration is similar to you, Dovecot Direcot, Dovecot
backend that share Maildir via NFS on NetApp.</p>
<p>For local delivery of emails are you using LDA or LMTP? I'm using
LDA.</p>
<p>Let me know.</p>
<p>Thanks<br>
</p>
<div class="moz-cite-prefix">Il 13/01/21 15:56, Maciej Milaszewski
ha scritto:<br>
</div>
<blockquote type="cite"
cite="mid:4d69375e-9e39-2607-a05e-f8464f2342d9@iq.pl">
<pre class="moz-quote-pre" wrap="">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
</pre>
</blockquote>
<pre class="moz-signature" cols="72">--
Alessio Cecchi
Postmaster @ <a class="moz-txt-link-freetext" href="http://www.qboxmail.it">http://www.qboxmail.it</a>
<a class="moz-txt-link-freetext" href="https://www.linkedin.com/in/alessice">https://www.linkedin.com/in/alessice</a></pre>
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