In what cases does the VM's VF get removed? If AZURE upgrades its own software components or hypervisors, shouldn't VF be removed and created simultaneously in all AZURE environments worldwide? If not, does the VF have a different time to remove depending on the components, hypervisors, and infrastructure?

@김다빈(KIM DB - Cloud사업2담당) Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well. You informed you are using a 3rd party application in an Azure VM with Accelerated Networking enabled and would like to know the cases where VF would be unregistered. The removal and addition of VF interface is discussed in Azure host servicing . Azure host servicing might include updating the components of the Azure network infrastructure or fully upgrading the Azure host hypervisor software . Such servicing events occur at time intervals that depend on the operational needs of the Azure infrastructure. These events typically happen several times over the course of a year. Generally, any platform updates from Azure, both software and hardware are rolled in batch wise, the batch being grouped either based on regions or tenants, so that there are no downtimes and we can roll back should there be an issue. However, the timeline and logic depends on the product and is not generic. For a VF, it could be based on region, or more specifically, individual physical host wise. "Host" is the actual physical server in a datacenter where the VMs are running. Kindly let us know if this helps or you need further assistance on this issue. Thanks, Kapil Please don’t forget to close the thread by clicking " Accept the answer " wherever the information provided helps you, as this can be beneficial to other community members.

In what cases does the VM's VF get removed?

김다빈(KIM DB - Cloud사업2담당) 20

In what cases does the VM's VF get removed?
If AZURE upgrades its own software components or hypervisors, shouldn't VF be removed and created simultaneously in all AZURE environments worldwide?
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If not, does the VF have a different time to remove depending on the components, hypervisors, and infrastructure?
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KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-18T06:43:10.5966667+00:00
@김다빈(KIM DB - Cloud사업2담당)

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

I am afraid I did not understand what the requirement/ask is.

Are you referring to some IaaS/PaaS product offered in Azure Platform?

In case you are referring to how virtualization works in Azure, I am afraid this is something we will not be able to share in a public forum.

Generally, any platform updates from Azure, both software and hardware are rolled in batch wise, the batch being grouped either based on regions or tenants, so that there are no downtimes and we can roll back should there be an issue.

However, the timeline and logic depends on the product and is not generic.

Hope this helps.

If you have any queries regarding the working or configuration of a product, do let us know and we shall try to address them to the best of our knowledge

Cheers,

Kapil
KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-19T07:41:31.81+00:00

@김다빈(KIM DB - Cloud사업2담당)

May I know if you got a chance to review my previous comment?

Please let me know if you are facing any challenges or if there are any follow-up questions, I shall be glad to address them.

Thanks,

Kapil
김다빈(KIM DB - Cloud사업2담당) 20 Reputation points

2023-10-20T00:56:48.1666667+00:00

I use 3rd party solution in AZURE.

Sometimes I can see this messages : Suddenly VF interface removed and installed

[ 8160.911509] hv_netvsc 000d3af5-76bd-000d-3af5-76bd000d3af5 eth0: Data path switched from VF: enP53091s1np0

[ 8160.912120] hv_netvsc 000d3af5-76bd-000d-3af5-76bd000d3af5 eth0: VF unregistering: enP53091s1np0

[ 8162.020138] hv_netvsc 000d3af5-76bd-000d-3af5-76bd000d3af5 eth0: VF slot 1 removed

But this message has never appeared in other customer's solutions at the same time.

In the Microsoft AZURE manual, all VF interface can be removed and installed in VM. Then, I think when VF interface is removed, every VF interface in the world is removed.

If not, does Vf interface depend on each tenant?
KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-20T04:13:02.8933333+00:00
@김다빈(KIM DB - Cloud사업2담당)

Thanks for your detailed explanation.

If the logs are generated in the 3rd party solution, you must contact the 3rd party vendor only to understand what these error logs indicate.

As far as Azure is concerned, I am not aware of any service that would generate logs exposing internal implementation.

When you say, "Microsoft AZURE manual"

Is it something given to you by the third party?

Or are you referring to any Azure public documentation?

If so, can you please share it?

Also, when you say "3rd party solution" , is it deployed in a Virtual Network?

Or not

Cheers,

Kapil
김다빈(KIM DB - Cloud사업2담당) 20 Reputation points

2023-10-20T04:21:28.48+00:00

Thank you for your kind response.

I'm not sure about that 3rd party solution is deployed in a Virtual Network.

But, it is installed in a Virtual Machine.

Then this is the web page that i study about this message.

-> https://learn.microsoft.com/en-us/azure/virtual-network/accelerated-networking-how-it-works
KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-20T04:50:16.9+00:00
@김다빈(KIM DB - Cloud사업2담당)

Thanks for your information.

The removal and addition of VF interface is discussed in Azure host servicing.

In the same doc, we can see ,

Azure host servicing might include updating the components of the Azure network infrastructure or fully upgrading the Azure host hypervisor software. Such servicing events occur at time intervals that depend on the operational needs of the Azure infrastructure. These events typically happen several times over the course of a year.

As I previously stated,

Any platform updates from Azure, both software and hardware are rolled in batch wise, the batch being grouped either based on regions or tenants, so that there are no downtimes and we can roll back should there be an issue.

The timeline and logic depends on the product and is not generic

For a VF, it could be based on region, or more specifically, individual physical host wise.

Hope this helps.

Cheers,

Kapil
김다빈(KIM DB - Cloud사업2담당) 20 Reputation points

2023-10-20T08:20:14.7033333+00:00

Thank you for your help.

What are the 'host servicing' and 'physical host wise' specifically?

I found only simple explanation.
KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-20T08:30:19.3833333+00:00

@김다빈(KIM DB - Cloud사업2담당)

"Host" is the actual physical server where the VMs are running.

Cheers,

Kapil.
김다빈(KIM DB - Cloud사업2담당) 20 Reputation points

2023-10-20T08:32:14.2433333+00:00

And then i can almost understand.

Thank you for your help.
KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-20T08:51:30.5533333+00:00

@김다빈(KIM DB - Cloud사업2담당)

You are most welcome.

I have summarized our discussion and posted it as a new answer.

I would highly appreciate if you could Accept the answer and close this thread

Original posters help the community find answers faster by identifying the correct answer.

Thanks,

Kapil

Accepted answer

KapilAnanth-MSFT 41,491 Reputation points Microsoft Employee

2023-10-20T08:50:59.1533333+00:00
@김다빈(KIM DB - Cloud사업2담당)

Welcome to the Microsoft Q&A Platform. Thank you for reaching out & I hope you are doing well.

You informed you are using a 3rd party application in an Azure VM with Accelerated Networking enabled and would like to know the cases where VF would be unregistered.

The removal and addition of VF interface is discussed in Azure host servicing.

Azure host servicing might include updating the components of the Azure network infrastructure or fully upgrading the Azure host hypervisor software. Such servicing events occur at time intervals that depend on the operational needs of the Azure infrastructure. These events typically happen several times over the course of a year.

Generally, any platform updates from Azure, both software and hardware are rolled in batch wise, the batch being grouped either based on regions or tenants, so that there are no downtimes and we can roll back should there be an issue.

However, the timeline and logic depends on the product and is not generic.

For a VF, it could be based on region, or more specifically, individual physical host wise.

"Host" is the actual physical server in a datacenter where the VMs are running.

Kindly let us know if this helps or you need further assistance on this issue.

Thanks,

Kapil

Please don’t forget to close the thread by clicking "Accept the answer" wherever the information provided helps you, as this can be beneficial to other community members.
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In what cases does the VM's VF get removed?

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