doveadm backup -f -n inbox doing writes?

[Marc Roos]

Hmmm, but I have made a few files with accounts to sync, if I use the 
list with the oldest least changing mailaccounts I get this spike during 
the doveadm backup. And if I issue the same command 30s later, the spike 
is back for the duration of the check. And since it was finished quite 
quickly, ran it for a third time, again the write spike.

doveadm backup -n inbox -F /root/backup-old-60-accounts.txt 
tcp:mail04.local:542


[@mail]# rpm -qa | grep dovecot
dovecot-pigeonhole-2.2.36-6.el7_8.1.x86_64
dovecot-2.2.36-6.el7_8.1.x86_64


-----Original Message-----
From: Aki Tuomi [mailto:aki.tuomi at open-xchange.com] 
Sent: 22 December 2020 09:52
To: Marc Roos; dovecot
Subject: Re: doveadm backup -f -n inbox doing writes?


> On 22/12/2020 00:12 Marc Roos <m.roos at f1-outsourcing.eu> wrote:
> 
>  
> If I start a 'doveadm backup -f -n inbox' on the source server, why do 

> also disk writes increase on the source server (indexes mostly?)

Probably because your indexes are not up to date? 

Aki