1. Release Notes for Unbreakable Enterprise Kernel Release 4 Update 7
  2. Known Issues
  3. i40e driver can cause a system hang when a high number of VFs are created

i40e driver can cause a system hang when a high number of VFs are created

When attempting to create the maximum number of SR-IOV Virtual Functions (VFs), on an X7-2 or X7-8 system using the Intel Corporation Ethernet Controller X710/X557-AT 10GBASE-T (rev 01), the command can hang and can eventually cause the system to hang. Specifically, setting the VFs to the maximum value works on the first attempt, but iterative resetting of the value causes the issue on higher values. (Bug ID 27567377)