Which partition for SAN with SAS disks

[Adamced]

Good morning everyone.
I have this problem, I installed a proxmox ve 8.2.7 on 3 HP D560 nodes and created a cluster without problems.
as dedicated disks for the VMs I have an HP P2000 G3 san with SAS connection. on this san i created two volumes in raid 6 one of 13 TB and the second of 8 TB, The proxmox nodes see them as sas disks (I don't know why double), however I come to the question. Can I use ZFS for these two disks? to create two storage to store the VM and share with both nodes?

 

[bbgeek17]

Hi @Adamced , welcome to the forum.

You've attached shared SAS storage to multiple hosts.
Your storage is connected to each host via multiple paths for redundancy.
You are seeing "double" because each path provides an access to the LUN.
Your next step is to install and configure "multipath" package on each of your hosts https://pve.proxmox.com/wiki/ISCSI_Multipath (ignore the iSCSI part. Improvements are coming to the Wiki).
Once you properly set up multipath, you need to choose a file system or volume manager that is suitable for shared storage.
ZFS is NOT appropriate in this case. It is NOT a shared file system or cluster aware.
Your choice is either LVM Thick https://pve.proxmox.com/wiki/Storage:_LVM OR Cluster Aware Filesystem.
Proxmox does not come with built-in CAF. You need to research, install, configure and support one on your own.

There are many guides, articles and forum posts that revolve around such configuration. You should be able to find something that will get you started.

Good luck
https://pve.proxmox.com/wiki/Storage

---

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox

 

[Adamced]

Thanks for the answer, following your advice I was able to solve it with multipath and sas in LVM.
Do you have any advice for me to do the same thing with LVM-THIN partitions since these allow clone and snapshot?
I tried to follow this link LVM Thick https://pve.proxmox.com/wiki/Storage but when I restart a pve the disk no longer works
thanks

 

[Johannes S]

LVM thin on shared storages is not supported and propably will never be due to limitations of lvm thin. I'm not a developer though maybe one of the proxmox staff will correct me. I would be happy to be wrong on this
Maybe one of the suggested alternatives on https://pve.proxmox.com/wiki/Migrate_to_Proxmox_VE#Alternatives_to_Snapshots is an suitable option for your usecase.
I myself would propably use PBS to achieve a snapshot/clone like function.
HTH and best regards, Johannes.

 

[Adamced]

Ok thanks, I'll follow your advice.
After all, I've tried all the ways of using lvm-thin that I know of

thanks so much