IBM Support

IT34493: MQ Appliance: After disabling eth20 interface addition of a standalone queue manager to HA at DR site fails with AMQ6546E

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APAR status

  • Closed as program error.

Error description

  • In an environment with four MQ Appliances, where there are 2
    different HA groups at different data centers and the queue
    managers on the first data center replicates to the appliances
    in the other site (DR site), the following steps were performed
    after disabling eth20 in both appliances at the DR site.
    mqa(mqcli)# makedrprimary -m QM1
    The makedrprimary command succeeded.
    mqa(mqcli)# dltdrprimary -m QM1
    The dltdrprimary command succeeded.
    mqa(mqcli)# sethagrp -i QM1
    Removing high availability configuration on appliance
    AMQ6589W: Failed to remove high availability configuration on
    The user should issue command 'dltmqm' on remote appliance
    'MQAPPDR2' when
    it becomes available.
    AMQ6546E: An internal IBM MQ Appliance error has occurred.
    Review of the logs for 'sethagrp -i QM1' shows that it failed
    while checking the DRDB health.
    2020-09-12 08:58:58.374157089-04:00:1234488:    { Entering
    2020-09-12 08:58:58.377805562-04:00:1234488:     drbdadm dump
    2020-09-12 08:58:58.381669543-04:00:1234488:
    /etc/drbd.d/QM1_DR.res: in resource drbd_QM1_DR, on MQAPPDR1:
    	IP not found on this host.
    /etc/drbd.d/QM1_DR.res: in resource drbd_QM1_DR, on MQAPPDR1:
    	IP 10.XX.YYY.ZZ not found on this host.
    2020-09-12 08:58:58.383800099-04:00:1234488:     rc(10)
    2020-09-12 08:58:58.385892706-04:00:1234488:     DRBD is not
    2020-09-12 08:58:58.389488658-04:00:1234488:    } Leaving
    drbd_check_healthy 113
    2020-09-12 08:58:58.394011872-04:00:1234488:   } Leaving
    createHAQM_pre 113
    Although QM1 is a legitimate queue manager, it is not currently
    valid because it refer to a local IP address (10.XX.YYY.ZZ)
    that doesn't exist. The IP 10.XX.YYY.ZZ is the IP for eth20 on
    MQAPPDR1 which was disabled at the time of executing sethagrp.

Local fix

  • Enable eth20 before issuing sethagrp.

Problem summary

  • ****************************************************************
    Users using MQ Appliance for High Availability (HA) and Disaster
    Recovery (DR)
    Platforms affected:
    The command used to validate DRDB health wasn't working when the
    interface used wasn't available.

Problem conclusion

  • The code has been modified to use a different command to
    validate DRDB health when the interface is absent.
    The fix is targeted for delivery in the following PTFs:
    Version    Maintenance Level
    v9.2 LTS
    v9.x CD    9.2.2
    The latest available maintenance can be obtained from
    'WebSphere MQ Recommended Fixes'
    If the maintenance level is not yet available information on
    its planned availability can be found in 'WebSphere MQ
    Planned Maintenance Release Dates'

Temporary fix


APAR Information

  • APAR number


  • Reported component name

    MQ APPL M2002 V

  • Reported component ID


  • Reported release


  • Status


  • PE




  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date


  • Closed date


  • Last modified date


  • APAR is sysrouted FROM one or more of the following:

  • APAR is sysrouted TO one or more of the following:

Fix information

  • Fixed component name

    MQ APPL M2002 V

  • Fixed component ID


Applicable component levels

[{"Type":"MASTER","Line of Business":{"code":"LOB36","label":"IBM Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SS5K6E","label":"IBM MQ Appliance"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions"}]

Document Information

Modified date:
09 July 2021