Linux NASes and USB3 hub

[stevech]

I suspect this is endemic to Linux-based NASes so....
My DS212 NAS (latest DSM OS) won't discover and mount a USB3 drive plugged into a USB3 hub that is connected to the NAS. I tried 3 different brands of hubs and 2 disks. It's as if there's no device driver for USB3 hubs?

Same hubs/drives work OK with Win 7.

Anyone tried this?

 

[sfx2000]

QQ - is the hub powered?

 

[stevech]

QQ - is the hub powered?

I tried one USB3 hub that is powered, no help.
Powered or not, these work for Windows, not Linux/NAS.

 

[RMerlin]

USB 3.0 hubs require specific kernel support. It's possible that NAS manufacturer don't enable that support when they build their kernel.

In short: USB hubs require driver support.

 

[sfx2000]

CHeck to see if the kernel module is loaded - ssh into the box...

should see something similar to below (I don't have any externals attached at the moment)

# lsmod | grep hci
xhci_hcd 132303 0 - Live 0xffffffffa002a000
uhci_hcd 23151 0 - Live 0xffffffffa0018000
ehci_pci 3904 0 - Live 0xffffffffa0014000
ehci_hcd 56821 1 ehci_pci, Live 0xffffffffa0000000

and then

# lsusb
Bus 001 Device 002: ID 05e3:0610 Genesys Logic, Inc.
Bus 001 Device 004: ID 125f:601a A-DATA Technology Co., Ltd.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 002 Device 002: ID 05e3:0617 Genesys Logic, Inc.
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub

 

[stevech]

With on USB3 hub plugged in. Nothing plugged into hub.
Here's what I got
/$ lsmod | grep hci
etxhci_hcd 62273 0
ohci_hcd 16271 0
xhci_hcd 55286 0
ehci_hcd 31532 0
usbcore 136085 8 usbhid,usblp,usb_storage,etxhci_hcd,ohci_hcd,xhci_hcd,ehci_hcd
/$ lsusb
-sh: lsusb: not found

I unplugged the hub.
lsmod gave the same list. Hub not recognized?

 

[sfx2000]

The kernel module is loaded, so that solves that...

Only thing I could suggest perhaps is to tail the logs, and plug the hub in and see what the kernel does..

tail -f /var/log/messages perhaps (depends on where synology is keeping the logs at...)