DS920+ on DSM 7.1 - possible to get cache working with SATA5 as SSD Drive?

[Jugga]

As the topic mentions. It it possible to use SATA5 as a cache drive?

I've already populated SATA 1->4 with storage drives, and have a spare SATA SSD drive which I was hoping to use as a Read only cache.

I've tried to create and edit the /etc.defaults/extensionPorts file, but it doesn't seem to make any difference.

Keen to hear anyone's thoughts. 

[pocopico]

On 9/13/2022 at 6:37 AM, Jugga said:

As the topic mentions. It it possible to use SATA5 as a cache drive?

I've already populated SATA 1->4 with storage drives, and have a spare SATA SSD drive which I was hoping to use as a Read only cache.

I've tried to create and edit the /etc.defaults/extensionPorts file, but it doesn't seem to make any difference.

Keen to hear anyone's thoughts. 

 

Edit both /etc.defaults/extensionPorts and /etc/extensionPorts 

[Peter Suh]

7 hours ago, pocopico said:

 

Edit both /etc.defaults/extensionPorts and /etc/extensionPorts 

 

 

DS920+ doesn't have an extensionPorts file?
Since this model is based on a device tree, shouldn't it be correct to expect the dtbpatch ext driver to automatically map NVMe?

 

admin2@ds920p:/$ ll /etc/extensionPorts
ls: cannot access '/etc/extensionPorts': No such file or directory
admin2@ds920p:/$ ll /etc.defaults/extensionPorts
ls: cannot access '/etc.defaults/extensionPorts': No such file or directory

 

[pocopico]

16 hours ago, Peter Suh said:

 

 

DS920+ doesn't have an extensionPorts file?
Since this model is based on a device tree, shouldn't it be correct to expect the dtbpatch ext driver to automatically map NVMe?

 

admin2@ds920p:/$ ll /etc/extensionPorts
ls: cannot access '/etc/extensionPorts': No such file or directory
admin2@ds920p:/$ ll /etc.defaults/extensionPorts
ls: cannot access '/etc.defaults/extensionPorts': No such file or directory

 

 

True ! I got carried with all other platforms. Device tree models have this info in the NVMe section of the DTS file and i think fabios patches that on the fly at boot.

 

https://github.com/fbelavenuto/arpl-addons/blob/main/dtbpatch/src/main.cpp

 

nvme_slot@1 {
pcie_root = "00:14.1";
port_type = "ssdcache";
};

nvme_slot@2 {
pcie_root = "00:14.0";
port_type = "ssdcache";
};

 

Edited October 2, 2022 by pocopico

[Jugga]

The problem is, it doesn't auto map for me, because the drive I want to use for Cache is a SATA drive (Sata slot 5) not a M2 drive.

[pocopico]

12 hours ago, Jugga said:

The problem is, it doesn't auto map for me, because the drive I want to use for Cache is a SATA drive (Sata slot 5) not a M2 drive.

 

If i recall/remember correctly, in the past and before the existance of NVMe on some platforms you were able to set an normal SATA SSD as cache. So i guess its for platfroms that didnt have NVMe slots that you were able to add SATA SSDs as cache. E.g. DS3615xs 

 

EDIT : You have to set the "support_ssd_cache" synoinfo for the above not sure it works on DS920+

Edited October 3, 2022 by pocopico