vMotion issue

[hoiyi88]

Hi ,

Very strange case, there have 3 server hosts with same hardware config and ESXi version.

But the network configuration is different, total 6 vswitches ,  3 vswtiches have enable emotion function.....I have try to vmkping to vmotion network both are able to connect. All vSwitch MTU as same as 1500

1. vMotion offline VM is success.

2. vMotion online migrate VMs some are success but some VMs are failed.

Migration to host <<unknown>> failed with error Already disconnected (195887150).

An unknown error has occurred.
An unknown error has occurred.
vMotion migration [-1062706151:1328732864388217] socket connected returned: Already disconnected

Any advise to troubleshoot and vMotion should config on a vSwitch for simple configuration?

Thanks.

[larstr · Accepted solution]

hoiyi88,

Sounds like you're having some weird networking issue. You're probably having one or more adapters with vmotion enabled that can't talk to some of your other vmotion enabled vmkernel adapters.

For troubleshooting I would dedicate a single vmkernel adapter living on the same vlan, in the same subnet. You can also use vmkping from the ESXi command line to troubleshoot this issue.

Good luck!

Lars

[hoiyi88]

Hi Lars,

Best practice we should be consider a dedicate a single vmkernal adapter with vMotion enabled for the production environment right?

[larstr]

Yes hoiyo88, atleast I would start with a single one until I have it working. Later you may consider configuring multi nic vmotion.

Also see:

Networking Best Practices for vSphere vMotion

Lars