Did anybody ever try to copy a hundred GB to an external USB HD

Did anybody ever try to copy a few hundred GB to an external USB HDD connected to the blue USB3 connector on the MyCloud? Either from the PC over the network to the share on the MyCloud or directly on the ssh shell with cp from MyCloud internal disk to USB connected disk?

Is there any WD official in this forum who can confirm that this [using external HD on MyCloud] has ever been tested before the product was introduced to the market?

I have three different external HDDs from different vendors (one of them is USB3 and two of them are USB2) and none of them can be used with the MyCloud. After a few GB copied the USB-Device will disconnect from the bus (errors in dmesg) and disappear from the device tree and I need to plug them out and in for them to become visible again.

All HDDs work flawlessly on all other PCs and Laptops in my house under Windows 7 and under Ubuntu and also when plugged into my router or into my TV. It doesn’t matter whether I use a hub or not. It doesn’t matter whether they are formatted FAT32 or Ext2 or Ext4, symptom is USB device do reset when heavy traffic is made after a few GB and then disappear from the USB bus. They NEVER reset when copying only small files one at a time or when slowly streaming SD content to the TV. All drives are externally powered. Hub is externally powered. Tried multiple different hubs, two of them brand new and also an old USB2 hub, makes no difference.

What about if the external USB hard drive was formatted for NTFS? Does the problem persist?

No problems with my first gen single bay v4.x My Cloud copying large amounts of data to a USB hard drive attached to the My Cloud USB port. For example using Safepoint to backup the My Cloud to the USB drive works fine.

Obvious things to look at. If one has modified the single bay firmware in any way using SSH may potentially affect the My Cloud in adverse ways. It may be possible the USB drive enclosure draws morre power than the My Cloud USB port can provide. A powered external USB hard drive enclosure may potentially solve such a problem or the use of a powered USB hub might also work.

It is also possible that the USB port on your particular My Cloud is damaged or defective, in which case perhaps contacting WD Support directly may be advisable.

NTFS is the only file system I did not try but it does not seem to be related to a particular file system. The errors come from the USB stack directly. Also it clearly states that EXT file systems are officially supported.

My device is a second gen single bay, I did not modify anything and I tried the newest firmware and also all available old firmwares.

Drives have their own power supply, also the hub has a power supply.

Post the dmesg errors.

Post the dmesg errors.

Here is a link:

It also happens with 4.12.0 kernel + debian booted from USB:

[Sat Jan  1 00:44:27 2000] usb 1-1.3: reset high-speed USB device number 4 using orion-ehci
[Sat Jan  1 00:44:27 2000] usb 1-1.3: device descriptor read/64, error -32
[Sat Jan  1 00:44:28 2000] usb 1-1.3: device descriptor read/64, error -32                                                                                                
[Sat Jan  1 00:44:28 2000] usb 1-1.3: reset high-speed USB device number 4 using orion-ehci
[Sat Jan  1 00:44:28 2000] usb 1-1.3: device descriptor read/64, error -32
[Sat Jan  1 00:44:28 2000] usb 1-1.3: device descriptor read/64, error -32                                                                                                
[Sat Jan  1 00:44:28 2000] usb 1-1.3: reset high-speed USB device number 4 using orion-ehci
[Sat Jan  1 00:44:28 2000] usb 1-1.3: device descriptor read/8, error -71
[Sat Jan  1 00:44:29 2000] usb 1-1.3: device descriptor read/8, error -71                                                                                                 
[Sat Jan  1 00:44:29 2000] usb 1-1.3: reset high-speed USB device number 4 using orion-ehci
[Sat Jan  1 00:44:29 2000] usb 1-1.3: device descriptor read/8, error -71
[Sat Jan  1 00:44:29 2000] usb 1-1.3: device descriptor read/8, error -71                                                                                                 
[Sat Jan  1 00:44:29 2000] usb 1-1.3: USB disconnect, device number 4
[Sat Jan  1 00:44:29 2000] sd 4:0:0:0: [sdd] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x01 driverbyte=0x00
[Sat Jan  1 00:44:29 2000] sd 4:0:0:0: [sdd] tag#0 CDB: opcode=0x2a 2a 00 94 c0 38 0f 00 00 f0 00
[Sat Jan  1 00:44:29 2000] blk_update_request: I/O error, dev sdd, sector 2495625231
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 545259520 size 8388608 starting block 311953575)
[Sat Jan  1 00:44:29 2000] buffer_io_error: 8182 callbacks suppressed
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953312
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953313
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953314
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953315
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953316
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953317
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953318
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953319
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953320
[Sat Jan  1 00:44:29 2000] Buffer I/O error on device sdd1, logical block 311953321
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311953831)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311954087)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311954343)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311954599)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311954855)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311955111)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311955367)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 553648128 size 8388608 starting block 311955623)
[Sat Jan  1 00:44:29 2000] EXT4-fs warning (device sdd1): ext4_end_bio:322: I/O error -5 writing to inode 1185798 (offset 562036736 size 4194304 starting block 311955879)
[Sat Jan  1 00:44:29 2000] sd 4:0:0:0: [sdd] tag#0 UNKNOWN(0x2003) Result: hostbyte=0x01 driverbyte=0x00
[Sat Jan  1 00:44:29 2000] sd 4:0:0:0: [sdd] tag#0 CDB: opcode=0x2a 2a 00 94 c0 38 ff 00 00 f0 00
[Sat Jan  1 00:44:29 2000] blk_update_request: I/O error, dev sdd, sector 2495625471
[Sat Jan  1 00:44:29 2000] JBD2: Detected IO errors while flushing file data on sdd1-8
[Sat Jan  1 00:44:29 2000] Aborting journal on device sdd1-8.
[Sat Jan  1 00:44:29 2000] EXT4-fs (sdd1): ext4_writepages: jbd2_start: 384 pages, ino 1185798; err -30
[Sat Jan  1 00:44:29 2000] EXT4-fs error (device sdd1) in __ext4_new_inode:904: Readonly filesystem
[Sat Jan  1 00:44:29 2000] EXT4-fs error (device sdd1) in __ext4_new_inode:904: Readonly filesystem
[Sat Jan  1 00:44:29 2000] EXT4-fs (sdd1): previous I/O error to superblock detected
[Sat Jan  1 00:44:29 2000] EXT4-fs error (device sdd1) in __ext4_new_inode:904: Readonly filesystem
[Sat Jan  1 00:44:29 2000] EXT4-fs (sdd1): previous I/O error to superblock detected
[Sat Jan  1 00:44:29 2000] EXT4-fs error (device sdd1) in __ext4_new_inode:904: Readonly filesystem
[Sat Jan  1 00:44:29 2000] EXT4-fs (sdd1): previous I/O error to superblock detected
[Sat Jan  1 00:44:29 2000] JBD2: Error -5 detected when updating journal superblock for sdd1-8.
[Sat Jan  1 00:44:29 2000] JBD2: Detected IO errors while flushing file data on sdd1-8
[Sat Jan  1 00:44:30 2000] usb 1-1.3: new high-speed USB device number 10 using orion-ehci
[Sat Jan  1 00:44:30 2000] usb 1-1.3: device descriptor read/64, error -32
[Sat Jan  1 00:44:30 2000] usb 1-1.3: device descriptor read/64, error -32
[Sat Jan  1 00:44:30 2000] usb 1-1.3: new high-speed USB device number 11 using orion-ehci
[Sat Jan  1 00:44:31 2000] usb 1-1.3: device descriptor read/64, error -32
[Sat Jan  1 00:44:31 2000] usb 1-1.3: device descriptor read/64, error -32
[Sat Jan  1 00:44:31 2000] usb 1-1.3: new high-speed USB device number 12 using orion-ehci
[Sat Jan  1 00:44:31 2000] usb 1-1.3: device descriptor read/8, error -71
[Sat Jan  1 00:44:31 2000] usb 1-1.3: device descriptor read/8, error -71
[Sat Jan  1 00:44:32 2000] usb 1-1.3: new high-speed USB device number 13 using orion-ehci
[Sat Jan  1 00:44:32 2000] usb 1-1.3: device descriptor read/8, error -71
[Sat Jan  1 00:44:32 2000] usb 1-1.3: device descriptor read/8, error -71
[Sat Jan  1 00:44:32 2000] usb 1-1-port3: unable to enumerate USB device
root@wdmc:~# lsusb -v

Bus 003 Device 003: ID 152d:0579 JMicron Technology Corp. / JMicron USA Technology Corp. 
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               3.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0         9
  idVendor           0x152d JMicron Technology Corp. / JMicron USA Technology Corp.
  idProduct          0x0579 
  bcdDevice            1.00
  iManufacturer           1 Intenso
  iProduct                2 External USB 3.0
  iSerial                 3 2016040230227
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength          121
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              224mA
    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     0x0400  1x 1024 bytes
        bInterval               0
        bMaxBurst              15
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0400  1x 1024 bytes
        bInterval               0
        bMaxBurst              15
    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     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0400  1x 1024 bytes
        bInterval               0
        bMaxBurst               0
        Command pipe (0x01)
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0400  1x 1024 bytes
        bInterval               0
        bMaxBurst               0
        MaxStreams             32
        Status pipe (0x02)
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0400  1x 1024 bytes
        bInterval               0
        bMaxBurst              15
        MaxStreams             32
        Data-in pipe (0x03)
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x04  EP 4 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0400  1x 1024 bytes
        bInterval               0
        bMaxBurst              15
        MaxStreams             32
        Data-out pipe (0x04)
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   0x00000f0e
      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          32 micro seconds
Device Status:     0x0000
  (Bus Powered)

Bus 003 Device 002: ID 2109:0813  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               3.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         3 
  bMaxPacketSize0         9
  idVendor           0x2109 
  idProduct          0x0813 
  bcdDevice            2.24
  iManufacturer           1 VIA Labs, Inc.         
  iProduct                2 USB3.0 Hub             
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           31
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes           19
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Feedback
        wMaxPacketSize     0x0002  1x 2 bytes
        bInterval               8
        bMaxBurst               0
Hub Descriptor:
  bLength              12
  bDescriptorType      42
  nNbrPorts             4
  wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
  bPwrOn2PwrGood      100 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  bHubDecLat          0.4 micro seconds
  wHubDelay          4004 nano seconds
  DeviceRemovable    0x00
 Hub Port Status:
   Port 1: 0000.02a0 5Gbps power Rx.Detect
   Port 2: 0000.0203 5Gbps power U0 enable connect
   Port 3: 0000.02a0 5Gbps power Rx.Detect
   Port 4: 0000.02a0 5Gbps power Rx.Detect
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength           42
  bNumDeviceCaps          3
  USB 2.0 Extension Device Capability:
    bLength                 7
    bDescriptorType        16
    bDevCapabilityType      2
    bmAttributes   0x00000002
      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           4 micro seconds
    bU2DevExitLat         231 micro seconds
  Container ID Device Capability:
    bLength                20
    bDescriptorType        16
    bDevCapabilityType      4
    bReserved               0
    ContainerID             {5cf3ee30-d507-4925-b001-802d79434c30}
Device Status:     0x0001
  Self Powered

Bus 003 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               3.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         3 
  bMaxPacketSize0         9
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0003 3.0 root hub
  bcdDevice            4.12
  iManufacturer           3 Linux 4.12.0 xhci-hcd
  iProduct                2 xHCI Host Controller
  iSerial                 1 f1058000.usb3
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           31
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
        bMaxBurst               0
Hub Descriptor:
  bLength              12
  bDescriptorType      42
  nNbrPorts             1
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  bHubDecLat          0.0 micro seconds
  wHubDelay             0 nano seconds
  DeviceRemovable    0x00
 Hub Port Status:
   Port 1: 0000.0203 5Gbps power U0 enable connect
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength           15
  bNumDeviceCaps          1
  SuperSpeed USB Device Capability:
    bLength                10
    bDescriptorType        16
    bDevCapabilityType      3
    bmAttributes         0x00
    wSpeedsSupported   0x0008
      Device can operate at SuperSpeed (5Gbps)
    bFunctionalitySupport   3
      Lowest fully-functional device speed is SuperSpeed (5Gbps)
    bU1DevExitLat           0 micro seconds
    bU2DevExitLat           0 micro seconds
Device Status:     0x0001
  Self Powered

Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            4.12
  iManufacturer           3 Linux 4.12.0 xhci-hcd
  iProduct                2 xHCI Host Controller
  iSerial                 1 f1058000.usb3
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             1
  wHubCharacteristic 0x000a
    No power switching (usb 1.0)
    Per-port overcurrent protection
    TT think time 8 FS bits
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0100 power
Device Status:     0x0001
  Self Powered

Bus 001 Device 014: ID 152d:2329 JMicron Technology Corp. / JMicron USA Technology Corp. JM20329 SATA Bridge
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x152d JMicron Technology Corp. / JMicron USA Technology Corp.
  idProduct          0x2329 JM20329 SATA Bridge
  bcdDevice            1.00
  iManufacturer           1 JMicron
  iProduct                2 USB to ATA/ATAPI Bridge
  iSerial                 5 1590300610FF
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 USB Mass Storage
    bmAttributes         0xc0
      Self Powered
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              6 MSC Bulk-Only Transfer
      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
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x9101
  Self Powered

Bus 001 Device 015: ID 152d:2329 JMicron Technology Corp. / JMicron USA Technology Corp. JM20329 SATA Bridge
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x152d JMicron Technology Corp. / JMicron USA Technology Corp.
  idProduct          0x2329 JM20329 SATA Bridge
  bcdDevice            0.00
  iManufacturer          10 Fujitsu-Siemens Computers
  iProduct               11 Storagebird 35EV840
  iSerial                 3 000000209896
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          4 USB Mass Storage
    bmAttributes         0xc0
      Self Powered
    MaxPower                2mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           2
      bInterfaceClass         8 Mass Storage
      bInterfaceSubClass      6 SCSI
      bInterfaceProtocol     80 Bulk-Only
      iInterface              6 MSC Bulk-Only Transfer
      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
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0001
  Self Powered

Bus 001 Device 003: ID 058f:6387 Alcor Micro Corp. Flash Drive
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  idVendor           0x058f Alcor Micro Corp.
  idProduct          0x6387 Flash Drive
  bcdDevice            1.01
  iManufacturer           1 Generic
  iProduct                2 Mass Storage
  iSerial                 3 0ADAFD02
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           32
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0x80
      (Bus Powered)
    MaxPower              200mA
    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     0x01  EP 1 OUT
        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     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               0
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass            0 (Defined at Interface level)
  bDeviceSubClass         0 
  bDeviceProtocol         0 
  bMaxPacketSize0        64
  bNumConfigurations      1
Device Status:     0x0000
  (Bus Powered)

Bus 001 Device 002: ID 2109:2813  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.10
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x2109 
  idProduct          0x2813 
  bcdDevice            2.24
  iManufacturer           1 VIA Labs, Inc.         
  iProduct                2 USB2.0 Hub             
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0001  1x 1 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             4
  wHubCharacteristic 0x01e9
    Per-port power switching
    Per-port overcurrent protection
    TT think time 32 FS bits
    Port indicators
  bPwrOn2PwrGood       50 * 2 milli seconds
  bHubContrCurrent    100 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0503 highspeed power enable connect
   Port 2: 0000.0100 power
   Port 3: 0000.0503 highspeed power enable connect
   Port 4: 0000.0503 highspeed power enable connect
Binary Object Store Descriptor:
  bLength                 5
  bDescriptorType        15
  wTotalLength           42
  bNumDeviceCaps          3
  USB 2.0 Extension Device Capability:
    bLength                 7
    bDescriptorType        16
    bDevCapabilityType      2
    bmAttributes   0x00000002
      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           4 micro seconds
    bU2DevExitLat         231 micro seconds
  Container ID Device Capability:
    bLength                20
    bDescriptorType        16
    bDevCapabilityType      4
    bReserved               0
    ContainerID             {5cf3ee30-d507-4925-b001-802d79434c30}
Device Status:     0x0001
  Self Powered

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass            9 Hub
  bDeviceSubClass         0 Unused
  bDeviceProtocol         1 Single TT
  bMaxPacketSize0        64
  idVendor           0x1d6b Linux Foundation
  idProduct          0x0002 2.0 root hub
  bcdDevice            4.12
  iManufacturer           3 Linux 4.12.0 ehci_hcd
  iProduct                2 EHCI Host Controller
  iSerial                 1 f1054000.usb
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength           25
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xe0
      Self Powered
      Remote Wakeup
    MaxPower                0mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           1
      bInterfaceClass         9 Hub
      bInterfaceSubClass      0 Unused
      bInterfaceProtocol      0 Full speed (or root) hub
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            3
          Transfer Type            Interrupt
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0004  1x 4 bytes
        bInterval              12
Hub Descriptor:
  bLength               9
  bDescriptorType      41
  nNbrPorts             1
  wHubCharacteristic 0x0009
    Per-port power switching
    Per-port overcurrent protection
    TT think time 8 FS bits
  bPwrOn2PwrGood       10 * 2 milli seconds
  bHubContrCurrent      0 milli Ampere
  DeviceRemovable    0x00
  PortPwrCtrlMask    0xff
 Hub Port Status:
   Port 1: 0000.0503 highspeed power enable connect
Device Status:     0x0001
  Self Powered

The two USB2 drives (most unstable):

idVendor           0x152d JMicron Technology Corp. / JMicron USA Technology Corp.
idProduct          0x2329 JM20329 SATA Bridge

and the USB3 drive (crashes not so often but sometimes too and when it does the symptoms are exactly the same):

idVendor           0x152d JMicron Technology Corp. / JMicron USA Technology Corp.
idProduct          0x0579

Does anybody have the same SATA bridges in his external drive and it works with MyCloud?

Hello,

I face the same problem, trying to have a backup from NAS to USB…

Any reason why you were doing this 18 years ago…?

Any reason why you were doing this 18 years ago…?

Lol, I time traveled back into the year 2000 and took a 4.12 kernel with me to give it to Linus Torvalds. The effects of this timeline manipulation should soon be noticeable: Linux will have become the dominant desktop OS because it always had mature drivers for all wifi dongles, graphic cards, laptop chipsets, printers and scanners even before they were released and Windows will have disappeared 5 years ago. Microsoft is now building vacuum cleaners, the first product since the Microsoft Mouse that dosn’t s*ck.

No, just kidding. The clock was not set. I used the bootable USB stick to temporarily boot the device with Debian Jessie and a 4.12 kernel to see if the problem goes away when a more modern kernel with newer drivers is used.

This distribution did not have the dhcp client properly configured so it could not find my DNS server and was unable to resolve and connect any time server to set the clock.

Same issue here, but only happens using some adapters.

I found that using this adapter https://www.amazon.es/gp/product/B01D9KX8KG/ works without problems (it’s reported as ‘USB_to_ATA_ATAPI_Brid USB_Device’), but with other reported as “JMicron…” it always gives I/O errors.

Any idea how to overcome this issue other than having another drive connected?

You can’t really overcome this, since it’s a hardware issue. I’ve been looking into UASP support that could alleviate the issue but I only have a Asmedia1051 based HDD enclosure that’s blacklisted in linux’s UAS module (works well with windows, though). So far, I don’t know for sure if the marvell xhci controller (I have mycloud v2) is capable of UAS at all.
Long story short, using UASP with a compatible drive and assuming the USB controller can do it AND support is compiled in the kernel (it is in mine) could tax the controller less and work around crashes.

I also suspected a systematic problem that would not go away simply by returning it and getting a new replacement device, thats why I have now returned it for a refund.

Also the complete silence of the official WD people here in the forum suggests that they know d*mn well about the problem but don’t want to talk about it because they know it can not be solved.


I now ordered a Rock64 board, installed the official Debian image for it, plugged in all my HDDs, made fstab and smb.conf with pretty much standard settings and getting solid 90MB/s with the USB3 disk and almost 40MB/s with the USB2 disk and can transfer terabytes of data the entire night non-stop without the slightest hickup, the very same USB disks that did not work on the MyCloud.

And the additional bonus is my new cheap ghetto NAS will sleep at night and run only the software that I want.