fence_lpar fails with "ERROR: Unable to parse output of list command" when user name, HMC hostname, or managed system name is long

Solution In Progress - Updated -

Issue

  • A fence_lpar stonith device fails to start because of a parse error:

    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:10,775 INFO: Running command: /usr/bin/ssh  sv-hanahmc_prd-aunxhmc2a-z2h@p9-vhmc1.fs.lab.eng.bos.redhat.com -p 22 -o PubkeyAuthentication=no ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:12,045 DEBUG: Received: '\rPa''ssword:' ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:12,045 DEBUG: Sent: password ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [  ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:13,074 DEBUG: Received: ' \r\nLast login: Sat Jul 25 00:20:00 2020 from 10.3.112.217\r\r\nsv-hanahmc_prd-aunxhmc2a-z2h@p9-vhmc1'':~>' ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:13,074 DEBUG: Sent: lssyscfg -r lpar -m ibm-p9z-20 -F name:state ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [  ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:13,238 DEBUG: Received: ' lssyscfg -r lpar -m ibm-p9z-20 -F na\r<h@p9-vhmc1'':~>' ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:13,240 ERROR: Unable to parse output of list command ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [  ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [ 2020-07-24 17:20:13,240 ERROR: Please use '-h' for usage ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: warning: fence_lpar[4419] stderr: [  ]
    Jul 24 17:20:13 fastvm-rhel-8-0-24 pacemaker-fenced[1607]: notice: Operation 'monitor' [4419] for device 'lpar' returned: -201 (Generic Pacemaker error)
    
  • Pacemaker fails fence a node with a fence_lpar stonith device.

  • All fence_lpar commands work fine when run manually from the command line interface.

Environment

  • Red Hat Enterprise Linux 7 or 8 (with the High Availability Add-on)
  • IBM PowerPC

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