Creating a snapshot on Citrix Hypervisor 8.2 CU1 might be slower than XenServer 7.1 when using the following driver and firmware.

• Driver: i40e: Intel(R) 40-10 Gigabit Ethernet Connection Network Driver - version 2.9.21

• Firmware: fw 8.71.63306 api 1.11 nvm 10.54.7

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Workaround

1. Disable FW-LLDP using ethtool command. This setting will reset upon reboot (not persistent). 
   • Quoted from https://downloadmirror.intel.com/29744/eng/readme.txt  

ethtool --set-priv-flags <ethX> disable-fw-lldp on

 

Permanent Solution

1. Install Driver Disk for Intel i40e 2.22.20 - For Citrix Hypervisor 8.2 LTSR

• https://support.citrix.com/article/CTX564298/

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Problem Cause

The issue occurs when FW-LLDP (Firmware Link Layer Discovery Protocol) is enabled on Intel X710 NIC.