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Corosync Communication Failure

This document (000020407) is provided subject to the disclaimer at the end of this document.


SUSE Linux Enterprise Server for SAP Applications
SUSE Linux Enterprise High Availability Extension


In an event of a corosync message exchange failure, the receiving node will complain that the expected message was not received, while the sending node would retry to send the message multiple times.

In the corosync logs, the following messages are indicative of a retransmission of messages:
2021-07-29 05:08:03 [node name] corosync: message repeated 156 times: [   [TOTEM ] Retransmit List: 1be7]
2021-07-29 05:09:07  [node name] corosync: [TOTEM ] Retransmit List: 1bef
2021-07-29 05:12:20  [node name] corosync: [TOTEM ] Retransmit List: 1c01
2021-07-29 05:12:20  [node name] corosync: [TOTEM ] Retransmit List: 1c01
If the number of rotations of the token without receiving the messages reaches fail_recv_const (default 2500), a FAILED TO RECEIVE error is logged and new membership is formed indicating the other member left.  There is no wait time between the token rotations with message retransmission; 2500 retransmissions can be reached in 1-2 seconds.  This condition will be shown in the corosync logs:
2021-07-29 06:31:44 [node name] corosync: [TOTEM ] FAILED TO RECEIVE
2021-07-29 06:31:44 [node name] corosync: [TOTEM ] A new membership ( was formed. Members left: 1
2021-07-29 06:31:44 [node name] corosync: [TOTEM ] Failed to receive the leave message. failed: 1



A new corosync parameter cancel_token_hold_on_retransmit (default value 0) is introduced to enable the default behavior that the token is held when the number of retransmissions is too high.  This introduces wait time for message retransmission and significantly reduces the situation from occurring.

A maintenance update has been released with a fix.  Update corosync to the latest version or ensure the corosync version is at the following version or higher:

SUSE version

Corosync version

SLE 12 all SPs


SLE 15


SLE 15 SP1


SLE 15 SP2


SLE 15 SP3


SLE 15 SP4corosync-2.4.5-12.7.1


The situation may occur during a short network glitch or AntiVirus scan which delays the corosync message packet transmission.


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  • Document ID:000020407
  • Creation Date: 22-Mar-2023
  • Modified Date:22-Mar-2023
    • SUSE Linux Enterprise High Availability Extension
    • SUSE Linux Enterprise Server for SAP Applications

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