[SOLVED] Disks showing up duplicated in Proxmox

[Stealth103]

I have 8 disks attached to a Supermicro Backplane (SAS2 EL2 dual expander) which attaches to an HBA. When I boot into proxmox all the disks that are on the HBA are duplicated (none of the other disks are). I've tried searching online but haven't found much. I also tried just booting into a ubuntu image, and the disks only show up there once, so it seems like it's an issue with Proxmox itself and not the hardware.

Proxmox v7.4-3

Anyone have any ideas as to the cause, further troubleshooting steps, or a possible solution?

Thanks.

 

[bbgeek17]

If the server has dual connections to disk shelf, then you have a "multipath" situation and need to configure it appropriatelly:
https://ubuntu.com/server/docs/device-mapper-multipathing-configuration
https://gist.github.com/mrpeardotnet/547aecb041dbbcfa8334eb7ffb81d784

https://pve.proxmox.com/wiki/ISCSI_Multipath (its not SAS specific, but concepts are the same)

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

 

[Stealth103]

If the server has dual connections to disk shelf, then you have a "multipath" situation and need to configure it appropriatelly:
https://ubuntu.com/server/docs/device-mapper-multipathing-configuration
https://gist.github.com/mrpeardotnet/547aecb041dbbcfa8334eb7ffb81d784

https://pve.proxmox.com/wiki/ISCSI_Multipath (its not SAS specific, but concepts are the same)

---

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

Thanks, ended up switching a cable around on my backplane to not use the secondary SAS connector and that seems to have fixed the problem.