Cannot mount USB 3 HDD on Asus RT-AC68U running Asuswrt-Merlin 378.56_2

[TCH]

I just bought an Asus RT-AC68U installed Asuswrt-Merlin 378.56_2 on it. I have a 5 bay Orico HDD enclosure (JBOD) connected to the Asus via USB 3.0: while the router can see the 3 HDD's I had in the enclosure, only 1 HDD can be mounted, others listed as "unmounted".

Is there anyway I can mount the other drives? Thanks.

Nov 7 15:26:44 kernel: Buffer I/O error on device sdb, logical block 0
Nov 7 15:26:44 kernel: end_request: I/O error, dev sdc, sector 0
Nov 7 15:26:44 kernel: Buffer I/O error on device sdc, logical block 0
Nov 7 15:26:46 kernel: end_request: I/O error, dev sdc, sector 0
Nov 7 15:26:46 kernel: Buffer I/O error on device sdc, logical block 0
Nov 7 15:26:46 rc_service: asus_sd 2156:notify_rc restart_xhcimode 0
Nov 7 15:26:46 rc_service: waitting "restart_xhcimode 0" via asus_sd ...
Nov 7 15:26:46 Samba Server: smb daemon is stopped
Nov 7 15:26:46 kernel: gro disabled
Nov 7 15:26:46 Timemachine: daemon is stopped
Nov 7 15:26:47 kernel: usb 2-1: device not accepting address 2, error -22
Nov 7 15:26:47 kernel: hub 2-0:1.0: cannot disable port 1 (err = -19)
Nov 7 15:26:47 kernel: hub 2-0:1.0: cannot reset port 1 (err = -19)
Nov 7 15:26:47 kernel: hub 2-0:1.0: cannot disable port 1 (err = -19)
Nov 7 15:26:47 kernel: hub 2-0:1.0: cannot disable port 1 (err = -19)
Nov 7 15:26:47 kernel: end_request: I/O error, dev sdb, sector 0
Nov 7 15:26:47 kernel: Buffer I/O error on device sdb, logical block 0
Nov 7 15:26:47 kernel: Buffer I/O error on device sdb, logical block 1
Nov 7 15:26:47 kernel: Buffer I/O error on device sdb, logical block 2
Nov 7 15:26:47 kernel: Buffer I/O error on device sdb, logical block 3
Nov 7 15:26:47 kernel: end_request: I/O error, dev sdb, sector 0
Nov 7 15:26:47 kernel: Buffer I/O error on device sdb, logical block 0
Nov 7 15:26:47 kernel: hub 3-0:1.0: hub_port_status failed (err = -19)

 

[e_lasman]

Exactly the same problem with the latest firmware on AC68U. It started to happen after switch from 380.xx to the latest branch though diosk works just fine in USB 2.0