vMotion failed at 21%, How To Troubleshoot?

Problem : vMotion failed at 21%

Steps:1

Find IP address of source ESXi server using esxcfg-vmknic -l command

2> Are you able to ping any other server ?

use vmkping -I command

vmkping -I vmk2 destinationIP

I was not able to do vMotion because of wrong MTU . Problem solved after setting correct MTU of 1500

Make sure to check port group,MTU and  port options while troubleshooting vMotion issues

A general summary of vMotion process can be find below : Check VMware KB 1003734 for more details

1. vMotion request is sent to the vCenter Server
2. vCenter Server sends the vMotion request to the destination ESXi host
3. vCenter Server computes the specifications of the virtual machine to migrate
4. vCenter Server sends the vMotion request to the source ESXi host to prepare the virtual machine for migration
5. vCenter Server initiates the destination host virtual machine
6. vCenter Server initiates the source host virtual machine
7. vCenter Server switches the virtual machine’s ESXi host from the source to destination
8. vCenter Server completes the vMotion task

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Have a good day

Jobi

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