Cannot apply a patch on an ESXi host with FCoE or iBFT boot from SAN LUN using VMware vCenter Update Manager.
Applying a patch on an ESXi with FCoE or iBFT boot from SAN LUN fails with the error:
error code:15. The package manager transaction is not successful. Check the Update Manager log files and esxupdate log files for more details.
Storage adapters show all paths to boot LUN are dead.
CLI shows that the /bootbank symbolic link points to the /tmp directory.
The bootDeviceRescanTimeout parameter is added in ESXi 5.1 (Build #1483097), Patch ESXi510-201401201. This is ESXi 5.1 Update 2. If you are using an ESXi 5.1 versions prior to this build, upgrade the ESXi host to this build or a later version to implement this solution and prevent further patching failure.
For more information on LUN connectivity issues, see Troubleshooting LUN connectivity issues on ESXi hosts