Proxmox and iSCSI

Looks like the conversation has moved into a bit of a different direction, which is completely fine. I wanted to address a few points for posterity.

icepicknz said:
was going to introduce this later as I’m waiting on another switch and additional power to the rack to be installed.
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It is advisable to start with a multipath device if you anticipate moving to that type of configuration. This way you won't have to make any adjustments from /dev/sdX to /dev/mpathX later.

icepicknz said:
The issue I had was trying to move the VM’s to another PVE, it actually wiped the data from the LVM, though it may have been thin provisioned.
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There is no question that it was thin provisioned.
icepicknz said:
I ran it on one host and it removed on all; is there another method to clear the metadata and do I have to run it on each host?
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Follow the official guide or our KB article and pay particular attention whether the command needs to run on all nodes (rare) or on single designated node.
icepicknz said:
1./ Should I be using a single large LUN to install all VM's onto the same LUN, or should I be creating a LUN per VM?
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Both approaches are valid. A single LUN has significantly less management overhead. With LUN per VM you would likely not be using LVM. You could, but I would not recommend it.
icepicknz said:
Because snapshots aren't available, what is the suggested backup method? is it manually going to the storage array (running ZFS/iSCSI) and doing the snapshot (i.e. zfs snapshot Vol1/Plex-OS@snapshot-2025-04-25)
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You can either use PBS or vzdump (built-in PVE backup). Both use QEMU level snapshot (unrelated to storage snapshot) and provide point-in-time backup.
icepicknz said:
3./ The plugin I was looking at was https://github.com/TheGrandWazoo/freenas-proxmox , is this the one you mention became unsupported?
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yes, https://forum.proxmox.com/threads/g...ve-5x-and-freenas-11.54611/page-3#post-766015


Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
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floh8 said:
From PVE 9 on u can use snapshot with lvm shared.
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Thanks for posting this! I've been testing Proxmox as a potential VMware replacement, and one of the most unexpected discoveries with version 8 was the fact that I couldn't do snapshots of VMs on iSCSI storage with lvm shared volumes. Looks like I'll need to upgrade and test this.
 
dfriant said:
Thanks for posting this! I've been testing Proxmox as a potential VMware replacement, and one of the most unexpected discoveries with version 8 was the fact that I couldn't do snapshots of VMs on iSCSI storage with lvm shared volumes. Looks like I'll need to upgrade and test this
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We did a deep dive on this feature in this article: https://kb.blockbridge.com/technote/proxmox-qcow-snapshots-on-lvm/

bbgeek17

[TUTORIAL] Thread 'Inside Proxmox VE 9 SAN Snapshot Support'

Hi Everyone,

I'm excited to share a deep dive into one of the notable new feature in PVE9: the enhanced snapshot functionality designed for legacy SANs. This feature represents a meaningful step forward in expanding PVE's compatibility with traditional enterprise storage setups, something many of us have been eager to see... and something I've answered a lot of questions about over the years ;)

Inside Proxmox VE 9 SAN Snapshot Support: https://kb.blockbridge.com/technote/proxmox-qcow-snapshots-on-lvm/

Our latest technote dives into the architecture, how the feature operates...
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Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
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