Thank you for your response, I don’t know well the Unix language but I run thoses command and I think all drive are seens on my usb hub.:
Summary
brwxrwxrwx 1 root root 8, 0 Nov 10 07:54 /dev/sda
brw-rw---- 1 root root 8, 1 Nov 10 07:55 /dev/sda1
brw-rw---- 1 root root 8, 2 Nov 10 07:54 /dev/sda2
brw-rw---- 1 root root 8, 3 Nov 10 07:54 /dev/sda3
brw-rw---- 1 root root 8, 4 Nov 10 07:54 /dev/sda4
brw-rw---- 1 root root 8, 5 Nov 10 07:54 /dev/sda5
brw-rw---- 1 root root 8, 6 Nov 10 07:54 /dev/sda6
brw-rw---- 1 root root 8, 7 Nov 10 07:54 /dev/sda7
brwxrwxrwx 1 root root 8, 16 Nov 10 07:58 /dev/sdb
brw-rw---- 1 root root 8, 17 Nov 10 07:58 /dev/sdb1
brw-rw---- 1 root root 8, 18 Nov 10 07:58 /dev/sdb2
brwxrwxrwx 1 root root 8, 32 Nov 10 07:58 /dev/sdc
brw-rw---- 1 root root 8, 33 Nov 10 07:58 /dev/sdc1
brw-rw---- 1 root root 8, 34 Nov 10 07:58 /dev/sdc2
-r–r–r-- 1 root root 0 Nov 10 07:58 /proc/partitions
But they don’t seen to be mountable.:
Summary
root@WDMyCloud root # dmesg | tail -30
[ 240.091289] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091298] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091308] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091356] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091368] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091378] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091388] sd 19:0:0:0: rejecting I/O to offline device
[ 240.091399] sd 19:0:0:0: rejecting I/O to offline device
[ 240.208994] sd 19:0:0:0: rejecting I/O to offline device
[ 240.209017] ufsd: failed to map block 0xbd3b0
[ 240.209023] ufsd:: failed to map block bd3b0
[ 240.209059] ufsd: failed to mount “sdc2”
[ 240.209077] ufsd:unload kernel utf8
[ 240.209086] ufsd:fill_super(“sdc2”), 226080: dd141dc0 10000000, nls=utf8,fmask=0,dmask=0,force,user_xattr, verbose
[ 240.209099] ufsd: Pages: total=3ecf, free=bef, buff=b87, shift=15
[ 240.209106] ufsd: Page flags: lck=1, err=2, ref=4, upt=8, drt=10, wrb=2000, priv=800
[ 240.209114] ufsd: Buff flags: upt=1, drt=2, lck=4, map=20, new=40, del=200, aread=80, awrite=100
[ 242.078965] usb 3-1.1: USB disconnect, device number 24
[ 242.144817] ufsd: “sdc2”: size = 0x2ba993000x1000 >= 0x57532600x8000
[ 242.150155] ufsd: “sdc2”: no discard
[ 242.152554] sd 19:0:0:0: rejecting I/O to offline device
[ 242.156682] ufsd: failed to read block 0x0
[ 242.159571] ufsd: : failed to read block 0
[ 242.162395] ufsd: failed to mount “sdc2”
[ 242.165044] ufsd:fill_super failed to mount sdc2: “unknown fs” ->-22
[ 242.242969] usb 3-1.2: USB disconnect, device number 25
[ 242.270465] hotPlug.sh begin(seq=1077)…
[ 242.392168] hotPlug.sh end(seq=1077).
[ 242.782135] hotPlug.sh begin(seq=1091)…
[ 242.890184] hotPlug.sh end(seq=1091).
And there some more info.:
Summary
root@WDMyCloud root # dmesg | grep usb
[ 0.165149] usbcore: registered new interface driver usbfs
[ 0.165280] usbcore: registered new interface driver hub
[ 0.165458] usbcore: registered new device driver usb
[ 2.062484] orion-ehci f1054000.usb: EHCI Host Controller
[ 2.066616] orion-ehci f1054000.usb: new USB bus registered, assigned bus number 1
[ 2.073420] orion-ehci f1054000.usb: irq 50, io mem 0xf1054000
[ 2.097348] orion-ehci f1054000.usb: USB 2.0 started, EHCI 1.00
[ 2.108375] xhci-hcd f1058000.usb3: xHCI Host Controller
[ 2.112422] xhci-hcd f1058000.usb3: new USB bus registered, assigned bus number 2
[ 2.119344] xhci-hcd f1058000.usb3: irq 48, io mem 0xf1058000
[ 2.129684] xhci-hcd f1058000.usb3: xHCI Host Controller
[ 2.133723] xhci-hcd f1058000.usb3: new USB bus registered, assigned bus number 3
[ 2.146096] usbcore: registered new interface driver usb-storage
[ 2.427391] usb 1-1: new high-speed USB device number 2 using orion-ehci
[ 2.967437] usb 3-1: new SuperSpeed USB device number 2 using xhci-hcd
[ 2.988430] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 3.277994] usb 3-1.1: new SuperSpeed USB device number 3 using xhci-hcd
[ 3.297545] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 3.306912] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 3.312194] scsi2 : usb-storage 3-1.1:1.0
[ 3.388001] usb 3-1.2: new SuperSpeed USB device number 4 using xhci-hcd
[ 3.407574] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 3.416798] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 3.421913] scsi3 : usb-storage 3-1.2:1.0
[ 36.508028] usb 3-1.1: reset SuperSpeed USB device number 3 using xhci-hcd
[ 36.527547] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 36.535655] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dcc4bd80
[ 36.542838] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dcc4bdac
[ 36.818065] usb 3-1.1: reset SuperSpeed USB device number 3 using xhci-hcd
[ 36.837586] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 36.845719] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dcc4bd80
[ 36.852906] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dcc4bdac
[ 36.924102] usb 3-1.1: USB disconnect, device number 3
[ 45.103904] usb 3-1.2: USB disconnect, device number 4
[ 45.299917] usb 3-1: reset SuperSpeed USB device number 2 using xhci-hcd
[ 45.321871] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 45.334161] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dcc55440
[ 45.648127] usb 3-1.1: new SuperSpeed USB device number 5 using xhci-hcd
[ 45.667848] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 45.681653] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 45.695553] scsi4 : usb-storage 3-1.1:1.0
[ 45.788782] usb 3-1.2: new SuperSpeed USB device number 6 using xhci-hcd
[ 45.808087] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 45.851656] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 45.867449] scsi5 : usb-storage 3-1.2:1.0
[ 56.027365] usb 3-1: USB disconnect, device number 2
[ 56.031050] usb 3-1.1: USB disconnect, device number 5
[ 56.073531] usb 3-1.2: USB disconnect, device number 6
[ 56.408668] usb 3-1: new SuperSpeed USB device number 7 using xhci-hcd
[ 56.428625] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 56.738312] usb 3-1.1: new SuperSpeed USB device number 8 using xhci-hcd
[ 56.758090] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 56.773493] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 56.780164] scsi6 : usb-storage 3-1.1:1.0
[ 56.868132] usb 3-1.2: new SuperSpeed USB device number 9 using xhci-hcd
[ 56.887640] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 56.898111] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 56.904763] scsi7 : usb-storage 3-1.2:1.0
[ 99.467394] usb 3-1: USB disconnect, device number 7
[ 99.471088] usb 3-1.1: USB disconnect, device number 8
[ 99.567162] usb 3-1.2: USB disconnect, device number 9
[ 99.937584] usb 3-1: new SuperSpeed USB device number 10 using xhci-hcd
[ 99.958990] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 100.278321] usb 3-1.1: new SuperSpeed USB device number 11 using xhci-hcd
[ 100.297859] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 100.348020] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 100.356307] scsi8 : usb-storage 3-1.1:1.0
[ 100.448576] usb 3-1.2: new SuperSpeed USB device number 12 using xhci-hcd
[ 100.467816] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 100.523073] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 100.541062] scsi9 : usb-storage 3-1.2:1.0
[ 102.557448] usb 3-1: USB disconnect, device number 10
[ 102.561253] usb 3-1.1: USB disconnect, device number 11
[ 102.767832] usb 3-1.2: USB disconnect, device number 12
[ 103.237589] usb 3-1: new SuperSpeed USB device number 13 using xhci-hcd
[ 103.258653] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 103.588226] usb 3-1.1: new SuperSpeed USB device number 14 using xhci-hcd
[ 103.617706] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 103.647923] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 103.667391] scsi10 : usb-storage 3-1.1:1.0
[ 103.758449] usb 3-1.2: new SuperSpeed USB device number 15 using xhci-hcd
[ 103.777818] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 103.857852] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 103.885948] scsi11 : usb-storage 3-1.2:1.0
[ 116.668094] usb 3-1.1: reset SuperSpeed USB device number 14 using xhci-hcd
[ 116.687564] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 116.695679] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dabbda80
[ 116.702870] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dabbdaac
[ 118.107355] usb 3-1: USB disconnect, device number 13
[ 118.111127] usb 3-1.1: USB disconnect, device number 14
[ 147.116694] usb 3-1.2: USB disconnect, device number 15
[ 147.567687] usb 3-1: new SuperSpeed USB device number 16 using xhci-hcd
[ 147.588901] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 147.898237] usb 3-1.1: new SuperSpeed USB device number 17 using xhci-hcd
[ 147.917667] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 147.929547] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 147.936397] scsi12 : usb-storage 3-1.1:1.0
[ 148.018177] usb 3-1.2: new SuperSpeed USB device number 18 using xhci-hcd
[ 148.038351] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 148.058707] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 148.064055] scsi13 : usb-storage 3-1.2:1.0
[ 148.140194] usb 3-1.1: USB disconnect, device number 17
[ 148.168489] usb 3-1.2: USB disconnect, device number 18
[ 148.353674] usb 3-1: reset SuperSpeed USB device number 16 using xhci-hcd
[ 148.437387] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 148.457396] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dbaefbc0
[ 148.768291] usb 3-1.1: new SuperSpeed USB device number 19 using xhci-hcd
[ 148.787772] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 148.808234] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 148.815922] scsi14 : usb-storage 3-1.1:1.0
[ 148.908291] usb 3-1.2: new SuperSpeed USB device number 20 using xhci-hcd
[ 148.927851] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 148.943098] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 148.949948] scsi15 : usb-storage 3-1.2:1.0
[ 151.708041] usb 3-1.1: reset SuperSpeed USB device number 19 using xhci-hcd
[ 151.727561] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 151.735688] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep db94e400
[ 151.742874] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep db94e42c
[ 157.077359] usb 3-1: USB disconnect, device number 16
[ 157.081132] usb 3-1.1: USB disconnect, device number 19
[ 182.231947] usb 3-1.2: USB disconnect, device number 20
[ 183.807469] usb 3-1: new SuperSpeed USB device number 21 using xhci-hcd
[ 183.828526] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 184.138154] usb 3-1.1: new SuperSpeed USB device number 22 using xhci-hcd
[ 184.157540] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 184.168949] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 184.178042] scsi16 : usb-storage 3-1.1:1.0
[ 184.268501] usb 3-1.2: new SuperSpeed USB device number 23 using xhci-hcd
[ 184.288018] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 184.309228] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 184.316836] scsi17 : usb-storage 3-1.2:1.0
[ 199.328132] usb 3-1.2: reset SuperSpeed USB device number 23 using xhci-hcd
[ 199.347653] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 199.355891] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dd7eea00
[ 199.363107] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dd7eea2c
[ 199.828041] usb 3-1.2: reset SuperSpeed USB device number 23 using xhci-hcd
[ 199.847597] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 199.855745] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dd7eea00
[ 199.862929] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dd7eea2c
[ 200.327181] usb 3-1.2: reset SuperSpeed USB device number 23 using xhci-hcd
[ 200.347888] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 200.371458] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dd7eea00
[ 200.378684] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep dd7eea2c
[ 200.412165] usb 3-1.1: USB disconnect, device number 22
[ 200.670943] usb 3-1.2: USB disconnect, device number 23
[ 201.027708] usb 3-1: reset SuperSpeed USB device number 21 using xhci-hcd
[ 201.068202] usb 3-1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 201.078294] xhci-hcd f1058000.usb3: xHCI xhci_drop_endpoint called with disabled ep d6ebf780
[ 201.388565] usb 3-1.1: new SuperSpeed USB device number 24 using xhci-hcd
[ 201.447490] usb 3-1.1: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 201.468421] usb-storage 3-1.1:1.0: USB Mass Storage device detected
[ 201.474773] scsi18 : usb-storage 3-1.1:1.0
[ 201.558643] usb 3-1.2: new SuperSpeed USB device number 25 using xhci-hcd
[ 201.577853] usb 3-1.2: Parent hub missing LPM exit latency info. Power management will be impacted.
[ 201.591975] usb-storage 3-1.2:1.0: USB Mass Storage device detected
[ 201.599666] scsi19 : usb-storage 3-1.2:1.0
[ 240.067311] xhci-hcd f1058000.usb3: xHCI host not responding to stop endpoint command.
[ 240.073959] xhci-hcd f1058000.usb3: Assuming host is dying, halting host.
[ 240.079513] xhci-hcd f1058000.usb3: HC died; cleaning up
[ 240.083583] usb 3-1: USB disconnect, device number 21
[ 242.078965] usb 3-1.1: USB disconnect, device number 24
[ 242.242969] usb 3-1.2: USB disconnect, device number 25
Sometime when I reboot MyCloud I can see one of my both external HDD but can’t access it. (I have 2 x 3TB ext. HDD)
Thank you for your time!