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vSAN 6.6 Ondisk upgrade to version 5 fails with the error "A general system error occurred: Unable to complete Sysinfo operation..." (2151316)

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Symptoms

  • When performing an ondisk upgrade to version 5, the task fails immediately with the error:
    A general system error occurred: Unable to complete Sysinfo operation. Please see the VMkernel log file for more details.: Sysinfo error: Bad parameterSee VMkernel log for details.

  • In the vSphere Web Client, the error appears similar to:


  • You see errors in the vSan health plugin log in vCenter Server, similar to:
Traceback (most recent call last):
  File "/usr/lib/vmware-vpx/vsan-health/pyMoVsan/VsanClusterPrototypeImpl.py", line 1492, in WaitForUpdateTask
    WaitForTask(task)
  File "/usr/lib/vmware-vpx/pyJack/pyVim/task.py", line 123, in WaitForTask
    raise task.info.error
vmodl.fault.SystemError: (vmodl.fault.SystemError) {
   dynamicType = <unset>,
   dynamicProperty = (vmodl.DynamicProperty) [],
   msg = 'A general system error occurred: Unable to complete Sysinfo operation. Please see the VMkernel log file for more details.: Sysinfo error: Bad parameterSee VMkernel log for details.',
   faultCause = <unset>,
   faultMessage = (vmodl.LocalizableMessage) [],
   reason = 'Unable to complete Sysinfo operation. Please see the VMkernel log file for more details.: Sysinfo error: Bad parameterSee VMkernel log for details.'
} 

Note: The vSan health plugin logs are located in these locations, depending on the version of vCenter Server you have installed:
    • Windows:
      %ProgramData%\VMware\vCenterServer\logs\vsan-health\
    • VCVA:
      /var/log/vmware/vsan-health

Resolution

This issue is resolved in vSAN 6.61 (vSphere 6.5 Update 1), available at VMware Downloads.

To work around this issue if you do not want to upgrade, temporarily enable resync throttling.

To enable resync throttling and trigger the ondisk upgrade:

  1. Navigate to the vSAN cluster in the vSphere Web Client.
  2. Select the Monitor tab and click vSAN.
  3. Select Resyncing Components and click Resync Throttling.
  4. Select the Enable throttling for resyncing components traffic check box.
  5. Perform the Ondisk Upgrade.
  6. Disable Resync Throttling.

See Also

Request a Product Feature

To request a new product feature or to provide feedback on a VMware product, please visit the Request a Product Feature page.

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