After Cisco UCS Manager Upgrade to 2.1.X , FC and SAN disconnected due to Zoning behavior changed

How dare Cisco totally changed FC Zoning behavior in from 2.0 to 2.1 without warning, migration wizard or default allowing policy!!!!

It is totally not possible to upgrade to 2.1 without putting the whole SAN offline!

Once UCS Manager reboot according to follow manual, it block all FC traffic from Blade to SAN Storage.
And Cisco didn't add any warning here telling FC Zoning behavior will be changed. It still telling in the manual could upgrade without affecting service.

http://www.cisco.com/en/US/docs/unified_computing/ucs/sw/upgrading/from2.0/to2.1/b_UpgradingCiscoUCSFrom2.0To2.1.html#concept_C70F7CFF31AC46C7AD03E8022299C808

Please study complete about this sample config before upgrading to UCS Firmware bundle 2.1

http://www.cisco.com/en/US/products/ps11350/products_configuration_example09186a0080c0a508.shtml#anc7