iSCSI Multipath with Huawei Dorado HyperMetro

[MaxM893]

Hello together,

i have a question for configuring iscsi with multipathing in a huawei hypermetro storage system.

We have a Dorado01 with 4 iscsi uplinks and 4 sync uplinks for hypermetro sync.
The Dorado02 has also 4 iscsi uplinks and 4 sync uplinks for hypermetro sync.


In the proxmox iscsi guide (https://pve.proxmox.com/wiki/Multipath#iSCSI) in point 2.1 they say we just have to add one iscsi ip address per storage and the proxmox hypervisor will find the other 3 ip addresses. The multipath configuration will happen after this step 2.1 in the guide...

But unfortunately the proxmox hypervisor doesn't find the other 3 ip addresses of the Dorado01 for example. This is my first environment with huawei dorados and proxmox, so i don't really have experience in this case, sorry.

In my opinion, i think i have to add all 8 iscsi ip addresses from the two dorados (like it is in vmware configuration). Maybe you know better about this and can tell me the right solution.

Thank you very much.

 

[bbgeek17]

In my opinion, i think i have to add all 8 iscsi ip addresses from the two dorados (like it is in vmware configuration). Maybe you know better about this and can tell me the right solution.

You could do that, but it will likely result in strange outcome.
The iSCSI protocol has a process for finding Target Portals (SAN IP addresses). Unsurprisingly, it's called Discovery. The Initiator (client/PVE) sends a special Discovery request, and the Target (dorado) replies with all Portals where a particular iSCSI target can be reached.

Certain vendors send all IPs, i.e., external and internal. This can confuse PVE. I don't know if Dorado is one of those vendors.
If I were in your shoes, I would try to troubleshoot why, seemingly, the Discovery process fails. You can do so by manually running "iscsiadm" and carefully reviewing the output.
You can probably find instructions on manual iSCSI connectivity in your vendor's documentation. Keep in mind that underneath the PVE is Debian. So basic Linux instructions are suitable here.

Good luck.

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