[SOLVED] Please assist on correct process for adding LVM in 4 node cluster using SAN


New Member
Nov 16, 2023
22 years experience in systems & cybersecurity, but not much in storage and proxmox. I have 4 nodes (not yet clustered as I am still setting up the NIC interfaces and only just got MPIO working on host 1).

My SAN has 2 LUNs
  • VMStorage - to be used to store VM disks and if possible, snapshots
  • FileStorage - to be used to store event log data
I have added 4x iSCSI path/targets via Datacenter > Storage since I have 4 redundant iSCSI paths to my SAN. It looks like I can add LVMs and am able to detect each of the two luns via Storage > Add > LVM
LUN 0 is my VM Storage
LUN 1 is my Event Log Storage

My question: What are my next steps? Do I create both LVMs on every node then create cluster? Or create one one node then create cluster and they will appear on all nodes? What are the best settings to use? Is there anything that I have to do in the CLI that I cannot complete in the web UI? Thanks!
Hi unassassinable,

Or create one one node then create cluster and they will appear on all nodes?
Storage added on one node will become visible on the other nodes. Please refer to alexskysilk's post for advice ; the result for storage in the threeview of my cluster is as follows:


All my storage has unique names (except for 'local'), so you'll notice that the same storage shows up under different nodes (except for 'local' storage).

"Yunos" has an entry on microtweak, supermarkt and on verjaardag, while this thin LVM is actually stored on verjaardag.

just got MPIO working

What do you mean with MPIO?
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Just some general remarks:
  • SAN implied thick-LVM, which does not allow snapshots
  • file storage is currently not possible with a supported configuration if you have a subscription, yet you may look into gfs2 or ocfs2

What do you mean with MPIO?
Multipath I/O, which is necessary to group all storage paths (wwids of disks showing up multiple times) into one device that will use one, some or all paths (depending on the storage and the configuration).
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