[DRBD-user] DRBD 9 and error kernel: drbd imap mail12: [drbd_s_imap/1748] sending time expired, ko = 6

[Josef Karliak]

   Good morning,
   I use drbd 9, we've some complains in the syslog.
   Running on Opensuse leap 15, updated about a week ago.
   A few times a day drbd disconnect from second node and after few 
seconds he reconnect and sync again, all works. But I do not like this 
errors. Interesting is that the errors are on the primary node. Server 
is HP DL380G9, 256GB RAM, 2xCPU ... Load (5sec) is about 1.1, io wait is 
zero, ....
   Did I missed some system tunning for DRBD ? MTU is default 1500. Or 
something else ?
   Any suggestions ?
   Thanks and best regards
   J.Karliak



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DomainKeys/DKIM (s ADSP) a implementaci DMARC. Pokud mate problemy s
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zminene vyse. Dekuji.
My domain use SPF (www.openspf.org) and DomainKeys/DKIM (with ADSP)
policy and implementation of the DMARC. If you've problem with sending
emails to me, start using email origin methods mentioned above. Thank
you.