Passthrough physical disk with original id?

[proxwolfe]

Hi,

I am wondering whether it is possible to passthrough physical disks to a VM keeping the original disk id?

When I passthrough a physical disk it shows up as, e.g. scsi-0QEMU_QEMU_HARDDISK_drive-xyz1 instead of under its id in the host system.

The reason why I am asking is that I am trying to virtualize an Unraid NAS which, while I have passed through all its disks, complains that its disks are missing - because they have different ids in the VM.

So is it possible to keep the id when passing through a disk?

I am assuming that passing through the entire controller would keep the ids but that is only the second best option as I would then have to buy an additional controller.

Thanks

 

[Dunuin]

Keep in mind that they are still kind of virtualized with the virtio SCSI controllerin the middle causing overhead if you don't PCI passthrough a dedicated HBA. A second hand 8x SATA professional HBA incl cables can be bought for as less then 40€.

 

[proxwolfe]

That's true. My experience with passing through disks on another host is, however, that it still is very fast and the virtualization penalty is not too high for me to accept.
I did get unraid to accept the old disks under a new name so the original problem is solved.
Nevertheless, I did buy a new sata controller and now am waiting for it to arrive. (And I will be swapping out unraid for openmediavault.)