index corruption weirdness

[Reio Remma]

On 10.10.2018 19:12, William Taylor wrote:
> OS Info:
>>> CentOS Linux release 7.5.1804 (Core)
>>> 3.10.0-862.14.4.el7.x86_64
>>>
>>> NFS:
>>> # mount -t nfs |grep mail/15
>>> 172.16.255.14:/vol/vol1/mail/15 on /var/spool/mail/15 type nfs
>>> (rw,nosuid,nodev,relatime,vers=3,rsize=32768,wsize=32768,namlen=255,hard,nordirplus,proto=tcp,timeo=600,retrans=2,sec=sys,mountaddr=172.16.255.14,mountvers=3,mountport=4046,mountproto=udp,local_lock=none,addr=172.16.255.14)
>>>
>>> Dovecot Info:
>>> dovecot -n
>>> # 2.1.17: /etc/dovecot/dovecot.conf
>>>
>> Hi!
>>
>> Thank you for your report, however, 2.1.17 is VERY old version of
>> dovecot and this problem is very likely fixed in a more recent version.
>>
>> Aki
>>
> I realize it is an older release.
>
> Are you saying that there is a bug in this version that affects RHEL 7.5
> but not RHEL 6 or just use the newest version and maybe the problem goes
> away?

I can see from my CentOS 7 installation that it comes with 2.2.10-8.el7 
package. Did you install 2.1.17 specifically somehow?

I'm using dovecot 2.3.3 as packaged by the developers in CentOS 7 myself.

Good luck,
Reio