2 Nodes and ISCSI Storage

A

ASM-Network

New Member
Mar 31, 2026
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Hello forum,

We have two PVE servers running in a cluster. Both have multiple network interfaces. The data is stored on a Fujitsu Storage DX100.

Server 1 is configured so that it's directly connected to the storage's controller port 1 via a network cable.

An iSCSI connection is established, and an LVM is created. This works without any problems.

Server 2 also has a direct connection to the storage, but to port 2.

Consequently, the iSCSI target is different, and we can't access the LVM.

What can we do to allow Server 2 to connect to the LVM?

Can we simply edit the storage.cfg file on the second server?

BR
Stefan
 
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Hi @ASM-Network , welcome to the forum.

This is an unusual configuration. What forced you down this particular path?

Is the Sever2 connected to Port2 on Controller1 or Controller2?

No, you can't just edit storage.cfg on the second server. The storage.cfg is located on a shared/clustered filesystem - its the same file as on server1.

Please take a look at this article https://kb.blockbridge.com/technote/proxmox-lvm-shared-storage/

In particular run the commands described in the following part on each server and report back: https://kb.blockbridge.com/technote...nderstand-multipath-reporting-for-your-device

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

One server is connected to controller cm#0 ca#0 port#0 and the other server to controller cm#0 ca#0 port#1. Both servers are connected to the same controller.

BR
Stefan
 
Please run the commands that were requested earlier. The configuration and system state may be clear to you, but the forum members are not familiar with your infrastructure.

It is unusual for a system to present two different iSCSI targets out of two interfaces of the same controller. Did you configure this on purpose? You were able to map one LUN to two different targets but you are not able to map the same target to both ports?

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

You could try to configure two iSCSI storage pools and scope each to one node only (using "nodes" option). Or you can simply use direct iscsiadm commands to manually connect iSCSI on each server and only use shared LVM pool. The process is described in the article I mentioned earlier.

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