NVMe TCP and ANA

[a.engel]

Hello Team,

I try to configure NVMe/TCP on a Proxmox 8.2 version. I see the controller and also the namespace. looks everything good (NetApp ONTAP Storage).
I´m only wondering where I can find information about ANA. If this is working or if I need some additional configuration steps. I was not able to find
any informations about ANA right now. Anybody already experience with that topic?

Best Regards
Andreas

 

[bbgeek17]

Hello Andreas,
The best way to see the Asymmetric Namespace Access (ANA) information is using nvme-cli.

You can get a sense of your controllers capabilites by reviewing the "Identify Controller" data structure.
Here's an example:

# nvme id-ctrl -o json /dev/nvme0 | grep ana
  "anatt" : 10,
  "anacap" : 71,
  "anagrpmax" : 32,
  "nanagrpid" : 32

If you want to know what ANA group your namespace is configured into, review the "Identify Namespace" data structure.
Here's an example:

# nvme id-ns -n 1  -o json /dev/nvme0 | grep ana
  "anagrpid" : 1,

Lastly, if you want to see the current state of native NVMe multipathing, consult the nvme subsystem.
Here's an example:

# nvme list-subsys -o json /dev/nvme0n1
{
  "Subsystems" : [
    {
      "Name" : "nvme-subsys0",
      "NQN" : "nqn.2009-12.com.blockbridge:f589803d-3d99-4c81-bd76-0092300f05cf",
      "Paths" : [
        {
          "Name" : "nvme0",
          "Transport" : "tcp",
          "Address" : "traddr=172.29.249.238 trsvcid=4420 src_addr=10.10.10.57",
          "State" : "live",
          "ANAState" : "optimized"
        },
        {
          "Name" : "nvme1",
          "Transport" : "tcp",
          "Address" : "traddr=10.10.10.206 trsvcid=4420 src_addr=10.10.10.57",
          "State" : "live",
          "ANAState" : "optimized"
        }
      ]
    }
  ]

I hope this helps!

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[a.engel]

Hi, thank you for your fast feedback. I will try this out ASAP.

Thanks You
Andreas