two nodes cluster with differents iscsi portals

[Julian Lliteras]

Hi

I have a two-node cluster up and running. My SAN storage (Dell MD3220i) have 4-port controller, and I attached one server in each port directly (without switch). Each storage port have one different portal, I can't reach the iscsi target with the same portal. In the proxmox environment, I noticed that I cannot share the iscsi defined connection because one node cannont reach storage by configuration.

My question is, shared iscsi storage must have the same portal? can I define one Iscsi storage connection for each node in any manner to share LVM defined on top?

I assume with direct connection with nodes and SAN I loss redundacy.

Thanks in advance,

Julian

 

[wolfgang]

Hi,

My question is, shared iscsi storage must have the same portal?

Yes
may be this helps

https://pve.proxmox.com/wiki/ISCSI_Multipath

 

[Julian Lliteras]

Thanks Wolfgang

I saw this doc, but I miss something, because MP is indeed to offer several paths to same disk in a node. In my case, each node only had one path to same virtual disk (one NIC attached). In this situation, is imperative to mount MP in each node?

Regards,
Julian

 

[DELAMOTTE]

Hi, I need do do the same thing. My proxmox cluster need to be connected to a 3par storage with 4 different ip. How can i configure the proxmox to use the 4 ips to connect to the volume et enable resiliency?
Thank you for your help.
Nicolas

 

[danielb]

Well, multipath should help here. Configure a shared storage with all the portals. Each node will only be able to reach it via its own path only (or paths), but globaly, evey node can access the same storage