This issue is resolved in vCenter Server 6.7 U3a, available at VMware Downloads.
During upgrades from vCenter Server 6.7U2c or 6.7U3 to vCenter Server 7.0, the workaround below must be applied first.
Workaround:
To work around this issue, disable TSO (TCP Segmentation Offload) and GSO (Generic Segmentation Offload) on the Ethernet Adapter Configuration of the source Platform Services Controller or Replication Partner vCenter Appliance before performing Convergence / Fresh Deployment / Cross Domain Repoint.
To disable TSO and GSO:
- Connect to the source PSC or Replication Partner vCenter Appliance using SSH.
- Change shell to Bash.
For example:
Command> shell
- Execute these commands:
ethtool -K eth0 tso off
ethtool -K eth0 gso off
Note: TSO & GSO will be automatically enabled during appliance reboot.
To enable TSO and GSO after Convergence / Fresh Deployment / Cross Domain Repoint is completed:
- Execute these commands:
ethtool -K eth0 tso on
ethtool -K eth0 gso on
To identify on which VCSA to apply the Workaround :
-
Scenario-1 [Convergence]: - Converging instances of vCenter Server Appliance with an external Platform Services Controller instances into vCenter Server Appliance with an embedded Platform Services Controller
VC1 -> PSC1
Converging VC1 pointing to PSC1 - Apply the workaround on PSC1
-
Scenario-2[Convergence]: - Converging instances of vCenter Server Appliance with an external Platform Services Controller instances into vCenter Server Appliance with an embedded Platform Services Controller connected in Embedded Linked Mode
PSC1 <-> Embedded VC2
^
|
VC1
Converging VC1 pointing to Embedded VC2 as Replication Partner where VC2 is an already Converged node - Apply the workaround on Embedded VC2
-
Scenario-3[Fresh Install]: - Adding a new vCenter Server Appliance with an embedded Platform Services Controller connected in Embedded Linked Mode
VC2 Embedded[Installing] <-> VC1 Embedded
VC2 getting installed pointing to Embedded VC1 - Apply the workaround on VC1
-
Scenario-4[Embedded Domain repoint]: - Repointing a vCenter Server Appliance with an Embedded Platform Services Controller to an existing vsphere domain
Embedded VC1[vsphere.local] <-> Embedded VC2[vmc.local]
VC1 is being repointed to VC2 - Apply the workaround on VC2
Note: You may apply the workaround on all the vCenter Server Appliances which are part of Enhanced Linked Mode if difficulty in finding out on which vCenter Server Appliance the workaround needs to be applied and enable it again when the activity is complete. Please note rebooting vCenter Server Appliance will automatically enable GSO and TSO by default.