Boot on FC SAN for installation

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Raph123FR

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Sep 26, 2025
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Hello,

Like many people, I am currently making some changes to move away from VMware.

Context:

- MX7XXX chassis
- MX740, MX750,760 without hard drive
- Brocade SAN
- HITACHI VSPx

On VMware, we usually use boot on SAN on a disk, which makes it easier for us to test disaster recovery shared across three data centers.

Proxmox does not offer the multipath package by default, which prevents me from booting properly on my disks.

I tried to install it from Debian, but I encountered a few issues.

I tried passing the argument: disk-detect/multipath/enable=true when starting the installer's GRUB (https://wiki.debian.org/DebianInstaller/MultipathSupport)

with ctrl+alt+f2, I have to manually load modprobe lpfc and then multipath -ll displays my paths + mpath, but when I return to the installation, Debian cannot find my disks.

Is there something I'm missing? Is there a way to do the installation from Proxmox? (For example, using a USB key to install the multipath packages?) Leaving only one path on the boot lun is not an option.

I have alse find this thread : https://forum.proxmox.com/threads/p...-bl660c-blade-with-hpe-650flb-hba-nic.137445/

But i don't currently use ipxe on my environnement.

Regards
 
I tried this years ago and was sadly not able to do it properly and beeing rock solid at the same time so we just bought two disks / BOSS-card-equivalent per host and went with it. Never had any issue since then and never looked back.
 
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There is no officially endorsed way to implement such boot from PVE installer. I have seen success stories reported in the forum from people installing Debian to boot from SAN.
I have no recent personal experience with booting from FC SAN, so don't have a specific advice for you.
Does your storage vendor have a Linux Boot guide you can reference?

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
 
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bbgeek17 said:
There is no officially endorsed way to implement such boot from PVE installer. I have seen success stories reported in the forum from people installing Debian to boot from SAN.
I have no recent personal experience with booting from FC SAN, so don't have a specific advice for you.
Does your storage vendor have a Linux Boot guide you can reference?

Blockbridge : Ultra low latency all-NVME shared storage for Proxmox - https://www.blockbridge.com/proxmox
Click to expand...
I have some configuration guide for RHEL or SUSE both solutions include "native" multipath configurations upon installation

I have nothing about ubuntu/debian ...
 
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