Loader and RDM

[nasmanager]

Hi,

 

As you now when using a virtual environment to run the XPEnoloy the SMART is missing. The only change to run it is pass the Disk Controller to the VM using I/O passthrough.

 

However, using the VMware ESXi with the Physical RDM, all SMART commands work inside a Linux VM.

 

So, the conclusion is that the tools inside the DSM refuses to enable SMART when a non-conformant controller is detected. Then, to enable the SMART inside a VM the kernel needs to hack the identification of the Virtual Controller. As I feel this can be done inside the Jun's Loader. So, from here I like to request support for this.

 

Please, consider it!

Regards.

 

[benok]

I don't know how to support that,  but I think it's hard to analyze & fix DSM & keep update and so on, and I think it have very little merit.

 

I don't recommend to use RDM for XPEnology.

I think RDM's merit is only for Vt-d unsupported CPU system can get some information from disk.

It's not useful to configure & uneasy to replace disk, etc.

You can't replace disk on crash, before you write rdm config for the new disk. 

 

I only used RDM on very old system which doesn't support Vt-d.

I recommend to use pass-through SATA I/O chip (onboard / PCIEx) and choose vt-d enabled CPU, if you want to use esxi.

 

My choice of setup for esxi system is something like this.

It's for home workstation/server setup & not only for NAS, so I know it's not for everyone...

[captainfred]

I would like this as well - the Celeron CPU in the Gen8 MicroServer along with many other CPUs I guess don't support a VM using I/O passthrough so the only options are RDMs or replace the CPU!

[flyride]

RDM can also be used to make non-compliant storage devices (NVMe in my case) available as emulated SCSI disks with all the attendant support benefits.