iSCSI volume as vmfs

ant12

New Member
Sep 12, 2024
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Hi,

is it possible using 2 hosts running proxmox and connect the 2 hosts to single LUN like we do it with vmfs on 2 hosts with ESXi and running there the virtual machines ? What should I do ?

Thanks.
 
First of all, a cluster of two Proxmox nodes won't work. They are based on majority voting, so if one node goes down, the other one fences itself. You are better off using three nodes, and if that's not possible, you need a third device that is configured as Qdevice.

Then, there is no cluster-aware file system that works as well with shared block storage like you know with VMFS. You only have only two options: LVM (non-thin) or ZFS-over-iSCSI. Both have their downsides, for example LVM doesn't support Snapshots.
 
What about LVM over iSCSI LUN ?
LVM is not a filesystem. There is no concurrent access to LVM slices. There are no VAAI or Persistent Reservations.
With careful coordination in the overlaying cluster, you can access a single Logical Volume on a single node at a time.


Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
How can I do that ? I only have one node and one iSCSI LUN. I want to setup LVM on this iSCSI LUN.
 
When I try to create LVM on the iSCSI LUN I get this error!

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