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Upgrading an ESX host with VEM400-200909001-BG installed fails if host is part of DVS

Details

ESX hosts running Cisco Nexus 1000V with the VEM400-200909001-BG bulletin installed and which are part of a distributed virtual switch (DVS) will fail to upgrade when trying to upgrade the host to ESX 4.0 Update 1 or later.

Solution

The issue has been fixed in new releases of Cisco Nexus 1000V, but hosts at this level will need to implement a workaround to move past this bulletin level.
 
To workaround the issue:
  1. Shutdown or migrate all virtual machines on the host.
  2. Login to the host as root.
  3. Run the hotswap.sh shell script:
    hotswap.sh -u
    This will cause traffic to be dropped for all VMs and pnics on the switch.

Once this is done, you can then apply a newer offline bulletin or use VUM to remediate a baseline with a newer bulletin.

If you have already attempted to load a new bulletin past VEM400-200909001-BG and your host is in an inconsistent state, recover as follows:

  1. Shutdown or migrate all virtual machines on the host.
  2. Reboot the host.
  3. Login as root.
  4. Copy the VEM-4.0.0-update01.zip bundle to the host.
  5. Run the hotswap.sh shell script:
    hotswap.sh -u
    This will cause traffic to be dropped for all VMs and pnics on the switch.
  6. Remove both Cisco bulletins on the host:
    1. Remove the VEM400-200911014-BG bulletin:
      vem-remove -d
    2. Remove the VIB file associated with VEM400-200909001-BG.
      esxupdate -b cross_cisco-vem-v100-esx-4.0.4.1.1.28-0.7.3 remove
    3. Reload the VEM-4.0.0-update01.zip bundle:
      esxupdate -bundle VEM-4.0.0-update01.zip update

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