Nope, my speculation is definitely wrong. The disk shows up in lsscsi:
[anovak@octagon ~]$ lsscsi ... [9:0:0:0] disk Seagate Backup+ Hub BK D781 /dev/sdb
Also, it shows up in lsusb -t with a "uas" driver.
Maybe the problem is the uas driver itself?
Here's the full description of the USB device, if that helps:
[anovak@octagon ~]$ sudo lsusb -v -d 0bc2:ab38
Bus 001 Device 008: ID 0bc2:ab38 Seagate RSS LLC Device Descriptor: bLength 18 bDescriptorType 1 bcdUSB 2.10 bDeviceClass 0 (Defined at Interface level) bDeviceSubClass 0 bDeviceProtocol 0 bMaxPacketSize0 64 idVendor 0x0bc2 Seagate RSS LLC idProduct 0xab38 bcdDevice 1.00 iManufacturer 2 Seagate iProduct 3 Backup+ Hub BK iSerial 1 NA8TQC87 bNumConfigurations 1 Configuration Descriptor: bLength 9 bDescriptorType 2 wTotalLength 85 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 bmAttributes 0xc0 Self Powered MaxPower 0mA Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 2 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 80 Bulk-Only iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Interface Descriptor: bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 1 bNumEndpoints 4 bInterfaceClass 8 Mass Storage bInterfaceSubClass 6 SCSI bInterfaceProtocol 98 iInterface 0 Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x81 EP 1 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Data-in pipe (0x03) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x02 EP 2 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Data-out pipe (0x04) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x83 EP 3 IN bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Status pipe (0x02) Endpoint Descriptor: bLength 7 bDescriptorType 5 bEndpointAddress 0x04 EP 4 OUT bmAttributes 2 Transfer Type Bulk Synch Type None Usage Type Data wMaxPacketSize 0x0200 1x 512 bytes bInterval 0 Command pipe (0x01) Binary Object Store Descriptor: bLength 5 bDescriptorType 15 wTotalLength 22 bNumDeviceCaps 2 USB 2.0 Extension Device Capability: bLength 7 bDescriptorType 16 bDevCapabilityType 2 bmAttributes 0x0000f41e Link Power Management (LPM) Supported SuperSpeed USB Device Capability: bLength 10 bDescriptorType 16 bDevCapabilityType 3 bmAttributes 0x00 wSpeedsSupported 0x000e Device can operate at Full Speed (12Mbps) Device can operate at High Speed (480Mbps) Device can operate at SuperSpeed (5Gbps) bFunctionalitySupport 1 Lowest fully-functional device speed is Full Speed (12Mbps) bU1DevExitLat 10 micro seconds bU2DevExitLat 2047 micro seconds Device Status: 0x0001 Self Powered
Nope, my speculation is definitely wrong. The disk shows up in lsscsi:
[anovak@octagon ~]$ lsscsi
...
[9:0:0:0] disk Seagate Backup+ Hub BK D781 /dev/sdb
Also, it shows up in lsusb -t with a "uas" driver.
Maybe the problem is the uas driver itself?
Here's the full description of the USB device, if that helps:
[anovak@octagon ~]$ sudo lsusb -v -d 0bc2:ab38
Bus 001 Device 008: ID 0bc2:ab38 Seagate RSS LLC tions 1 ionValue 1 orType 4 eNumber 0 eSetting 0 eClass 8 Mass Storage eSubClass 6 SCSI eProtocol 80 Bulk-Only
bDescriptorTyp e 5
bEndpointAddre ss 0x81 EP 1 IN
bmAttributes 2
wMaxPacketSize 0x0200 1x 512 bytes
bDescriptorTyp e 5
bEndpointAddre ss 0x02 EP 2 OUT
bmAttributes 2
wMaxPacketSize 0x0200 1x 512 bytes orType 4 eNumber 0 eSetting 1 eClass 8 Mass Storage eSubClass 6 SCSI eProtocol 98
bDescriptorTyp e 5
bEndpointAddre ss 0x81 EP 1 IN
bmAttributes 2
wMaxPacketSize 0x0200 1x 512 bytes
bDescriptorTyp e 5
bEndpointAddre ss 0x02 EP 2 OUT
bmAttributes 2
wMaxPacketSize 0x0200 1x 512 bytes
bDescriptorTyp e 5
bEndpointAddre ss 0x83 EP 3 IN
bmAttributes 2
wMaxPacketSize 0x0200 1x 512 bytes
bDescriptorTyp e 5
bEndpointAddre ss 0x04 EP 4 OUT
bmAttributes 2
wMaxPacketSize 0x0200 1x 512 bytes ityType 2 ityType 3 orted 0x000e itySupport 1
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.10
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x0bc2 Seagate RSS LLC
idProduct 0xab38
bcdDevice 1.00
iManufacturer 2 Seagate
iProduct 3 Backup+ Hub BK
iSerial 1 NA8TQC87
bNumConfigura
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 85
bNumInterfaces 1
bConfigurat
iConfiguration 0
bmAttributes 0xc0
Self Powered
MaxPower 0mA
Interface Descriptor:
bLength 9
bDescript
bInterfac
bAlternat
bNumEndpoints 2
bInterfac
bInterfac
bInterfac
iInterface 0
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Interface Descriptor:
bLength 9
bDescript
bInterfac
bAlternat
bNumEndpoints 4
bInterfac
bInterfac
bInterfac
iInterface 0
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Data-in pipe (0x03)
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Data-out pipe (0x04)
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Status pipe (0x02)
Endpoint Descriptor:
bLength 7
Transfer Type Bulk
Synch Type None
Usage Type Data
bInterval 0
Command pipe (0x01)
Binary Object Store Descriptor:
bLength 5
bDescriptorType 15
wTotalLength 22
bNumDeviceCaps 2
USB 2.0 Extension Device Capability:
bLength 7
bDescriptorType 16
bDevCapabil
bmAttributes 0x0000f41e
Link Power Management (LPM) Supported
SuperSpeed USB Device Capability:
bLength 10
bDescriptorType 16
bDevCapabil
bmAttributes 0x00
wSpeedsSupp
Device can operate at Full Speed (12Mbps)
Device can operate at High Speed (480Mbps)
Device can operate at SuperSpeed (5Gbps)
bFunctional
Lowest fully-functional device speed is Full Speed (12Mbps)
bU1DevExitLat 10 micro seconds
bU2DevExitLat 2047 micro seconds
Device Status: 0x0001
Self Powered