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ESX host writes failure message in the VMkernel log file every 2 minutes (1004499)

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  • After installing ESX 3.5, ESX 3.5 Update 1, or ESX 3.5 Update 2, the following message is logged in /var/log/vmkernel every 2 minutes:

    FileIO failed with 0x0xbad0006

  • You may see 0xbad0006 and bad0006 as message snippets in the log file.  
  • These messages do not affect the performance of the system.


This issue is solved in ESX 3.5 Update 3 For more information on ESX 3.5 Update 3, see the Update 3 documentation.
To workaround this issue and remove the message, you can reduce the level of logging.
Caution: VMware does not recommend reducing logging as it may make it impossible to properly troubleshoot potential future issues.  
  1. Add the following line to /etc/vmware/logfilters:

    3 0x0xbad0006

  2. Run the command:

    killall -HUP vmklogger

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