MPIO issues for NVMe-oF initiator

Initiator (iSCSI, FCoE, AoE, iSER and NVMe over Fabrics), iSCSI accelerator and RAM disk

Moderators: anton (staff), art (staff), Max (staff), Anatoly (staff)

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someuser
Posts: 2
Joined: Thu Jan 30, 2025 7:56 pm

Thu Jan 30, 2025 8:04 pm

Hello. We are testing NVMe-OF Initiator for suitability for our tasks, and a few issues have arisen:

1) Multipath does not work - multiple connections to one LUN give multiple devices.

2) Connecting via iSCSI Initiator interface according to your manual is not working - Login Error. Can only connect via CLI.

Setup: OceanStor Dorado 5000 V6, Windows 2019, Mellanox ConnectX 4-lx.
yaroslav (staff)
Staff
Posts: 3242
Joined: Mon Nov 18, 2019 11:11 am

Fri Jan 31, 2025 3:18 am

Multipath for SAS devices is to be enabled in Windows separately.
CLI connectivity issue is known and relates to the good old iSCSI initiator operation. Our own UI TBA.
someuser
Posts: 2
Joined: Thu Jan 30, 2025 7:56 pm

Fri Jan 31, 2025 6:04 pm

I know, I installed MPIO and DSM - but the problem persists.
yaroslav (staff)
Staff
Posts: 3242
Joined: Mon Nov 18, 2019 11:11 am

Fri Jan 31, 2025 7:15 pm

Did you enable MPIO support for SAS devices?
Bartek02
Posts: 1
Joined: Mon Feb 03, 2025 11:21 pm

Mon Feb 03, 2025 11:23 pm

someuser wrote:
Thu Jan 30, 2025 8:04 pm
Hello. We are testing NVMe-OF Initiator for suitability for our tasks, and a few issues have arisen:

1) Multipath does not work - multiple connections to one LUN give multiple devices.

2) Connecting via iSCSI Initiator interface according to your manual is not working - Login Error. Can only connect via CLI.

Setup: OceanStor Dorado 5000 V6, Windows 2019, Mellanox ConnectX 4-lx.
For issue 1, have you verified if multipath is correctly configured on both the initiator and target sides, including the necessary drivers for NVMe-OF support? For issue 2, are you using the correct authentication and network settings in the iSCSI Initiator, or could there be a firewall or port issue blocking the login attempt?
melmedarda
Posts: 1
Joined: Thu Feb 13, 2025 3:23 am

Thu Feb 13, 2025 3:26 am

On your Windows Server 2019 system, verify that the MPIO feature is installed. You can do this via Server Manager or by running the following PowerShell command:

Code: Select all

Install-WindowsFeature -Name Multipath-IO
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