My MyCloud doesn't recognize some USB Hard Drives

My Cloud OS 3 Personal & Network Attached Storage My Cloud
1

Hello.
First of all, thank you all for your support. Any comment will help.

I bougth a 4TB Mycloud some months ago and it works ok till now (althought sometimes it gets disconnected from my network without a reason for some seconds).

My major issue is that yesterday I connected an USB hub to the USB port. Then, I connected 5 hard drives to the hub.
The result is that MyCloud mounts only two of the five hard drives. Additionaly I can say that 3 of them are the same hard drive model and only one of them is reconigzed.

I have been searching in the forum and I realized that there are some topics with the same problem. But I am not sure if this problem has been solved.

Could someone tell me if I can do something to go over this?

Thanks in advace
Lucas

2

No the problem hasn’t been solved. Certain USB hard drives will not be mounted properly under the v4.x firmware. In my case, which I discussed in this thread, I had to repartition and reformat a Toshiba external USB 3.0 hard drive in a Windows PC before the My Cloud v4.x firmware would properly mount the drive. The default facotry formatting of the drive by Toshiba seems to have been the culprit under v4.x firmware, even though it mounted properly under the v3.x firmware.

One thing to try, connect each drive one at a time to the My Cloud. Use the eject option within the My Cloud Dashboard to eject the USB drive when finished with it. It is possible there may be a limit to how many drives can be mounted or supported at one time by the My Cloud.

3

Thanks a lot Bennor.
I will follow your advice and inform here about the results.
Poor thing.
Hoping they solve it for future firmware revisions.

4

Have you read the User Manual? See Chapter 12, Connecting a USB Hard Drive.

cat0w
USA

5

Hi cat0w.

Yes I did. that was the very first

And Mycloud sometimes recognize the hard drives and say they have 0 KB. But I can’t mount it, create shared folder…

6

Before you reformat. Have you tried to ssh into the MC and mount the USB drive?
The command to mount the USB drive is “mount /dev/sdb1 /mnt” If it worked you can do a df command and you should see that the USB is mounted. Then “umount /mnt” If that did work the problem is in the was the WD scripts try to mount the USB disk.

RAC

7

Well, after doing some test, I can say that:

  • I have 2 WD Elements (same model)
  • I have 1 Lacie (2 TB)
  • I have 1 Iomega HD

The three first hard drives are mounted correctly by MyCloud when I connect them separately

When I connect 2 of them (not the Iomega). The work ok two.

But when I connect the three first (2 WD & 1 Lacie), MyCloud only says that 2 have space. The other shows 0KB.

In any case I connect the Iomega it says 0KB.

8

@Lucas_Herraiz I’ve seen this happen with drives on Windows also. What happens is that when you have two of the same model of drive with the same “image” on them, one of them needs to be reformatted in-order to not have a conflict. Imagine if you and someone else had the exact same car. You won’t know which one is yours until you have a license plate or tint the windows…

A tip that I would give is to make sure that you are using a powered USB hub.

-B

9

Thanks daytrdr for your advice.

I confirm that I am using a powered USB Hub.

On the other hand, I should discard an issue caused by having identical signatures because when I connect the two WD Elements together (and no more hard disks) in the MyCloud USB port, they are mounted automatically OK.

Maybe MyCloud doesn’t support more than X USB units though its USB port?

10

When you connect three USB Disks Have you SSH’d into the MC and done a df. To see if all three are mounted?

RAC

11

Here are two shell scripts that will tell you what is in the autoMount.db. If the first digit is a one then the device is connected or the partition is mounted.

I hope this helps.

RAC

devices.sh
echo “connected, handle, vendor, model, serial_number, revision, ptp, smart_status, lock_state, password_hash, password_hint, standby_timer, vendor_id, product_id, usb_port, usb_version, usb_speed, timestamp, devname, devpath, scsi_devname”
echo “SELECT connected, handle, vendor, model, serial_number, revision, ptp, smart_status, lock_state, password_hash, password_hint, standby_timer, vendor_id, product_id, usb_port, usb_version, usb_speed, timestamp, devname, devpath, scsi_devname FROM Devices WHERE connected IS NOT NULL;”|sqlite3 /var/local/autoMount/autoMount.db

partitionsdb.sh
echo “connected, id, device_handle, partition_number, share_name, label, type, uuid, read_only, media_serving, description, public_access, mount_time, devname”
echo “SELECT connected, id, device_handle, partition_number, share_name, label, type, uuid, read_only, media_serving, description, public_access, mount_time, devname FROM Partitions WHERE connected IS NOT NULL;”|sqlite3 /var/local/autoMount/autoMount.db

12

This is the result of the df:

As you can see, there three hard disks are there: Backups (sdc1), Hard1 (sde1), and Hard2 (sdg1)

I would like to say that the two hard disks that appears correctly (now) are Hard1 and Hard2, just the two that have 2 mout points (/nfs and /var/media).

WDMyCloud:/nfs/Hard4# df
Filesystem 1K-blocks Used Available Use% Mounted on
rootfs 1968336 648176 1220172 35% /
/dev/root 1968336 648176 1220172 35% /
tmpfs 40960 4224 36736 11% /run
tmpfs 40960 64 40896 1% /run/lock
tmpfs 10240 0 10240 0% /dev
tmpfs 5120 0 5120 0% /run/shm
tmpfs 102400 3968 98432 4% /tmp
/dev/root 1968336 648176 1220172 35% /var/log.hdd
ramlog-tmpfs 40960 16704 24256 41% /var/log
/dev/sda4 3841069352 3042342832 720680456 81% /DataVolume
/dev/sda4 3841069352 3042342832 720680456 81% /CacheVolume
/dev/sda4 3841069352 3042342832 720680456 81% /nfs/SmartWare
/dev/sda4 3841069352 3042342832 720680456 81% /nfs/Public
/dev/sda4 3841069352 3042342832 720680456 81% /nfs/TimeMachineBackup
/dev/sda4 3841069352 3042342832 720680456 81% /nfs/Cazador_de_demonios_HDRip_Elitet
/dev/sda4 3841069352 3042342832 720680456 81% /nfs/MyCloud
/dev/sdb1 1465135100 224656 1464910444 1% /nfs/Hard2
/dev/sdc1 1953512444 281752948 1671759496 15% /nfs/Backups
/dev/sde1 1465133052 58211444 1406921608 4% /nfs/Hard1
/dev/sdh1 1465133052 58211444 1406921608 4% /var/media/Hard1
/dev/sdg1 1465135100 224656 1464910444 1% /var/media/Hard2
/dev/sdd1 1465136124 224660 1464911464 1% /nfs/Hard4

Results of script devices.sh:

connected, handle, vendor, model, serial_number, revision, ptp, smart_status, lock_state, password_hash, password_hint, standby_timer, vendor_id, product_id, usb_port, usb_version, usb_speed, timestamp, devname, devpath, scsi_devname
1|1|LaCie|LaCie Hard Drive USB|1c032cbc284b130251000000|0.01|false|unsupported|unsupported|||unsupported|059f|1018|1|2.0|480|1456349470.91288||/devices/platform/xhci-hcd/usb1/1-1/1-1.1|/dev/sg4
1|2|Western Digital|Ext HDD 1021|574D41565533323734343331|2.002|false|unsupported|unsupported|||unsupported|1058|1021|1|2.0|480|1456346998.55834||/devices/platform/xhci-hcd/usb1/1-1/1-1.4/1-1.4.2|/dev/sg3
1|3|Western Digital|Ext HDD 1021|574D41565533353737373736|2.002|false|unsupported|unsupported|||unsupported|1058|1021|1|2.0|480|1456346989.06841||/devices/platform/xhci-hcd/usb1/1-1/1-1.2|/dev/sg2
0|4|Western Digital|Ext HDD 1021|574D41565533323635343932|2.002|false|unsupported|unsupported|||unsupported|1058|1021|1|2.0|480|1456292384.30822|||
1|5|Iomega|USB to ATA ATAPI bridge|906AFFFFFFFF|1.00|false|unsupported|unsupported|||unsupported|059b|0475|1|2.0|480|1456348355.96559||/devices/platform/xhci-hcd/usb1/1-1/1-1.4/1-1.4.3|/dev/sg1

Result of partitions.sh:

connected, id, device_handle, partition_number, share_name, label, type, uuid, read_only, media_serving, description, public_access, mount_time, devname
0|2|1|1|Backups|Backups|ntfs|3CEAA045EA9FF8FA|false|any||true|1456341913|
1|3|2|1|Hard1|Hard1|ntfs|BA94BDE794BDA5F3|false|none||true|1456347052|/dev/sdh1
1|4|3|1|Hard2|Hard2|ntfs|9280F33880F32201|false|none||true|1456347504|/dev/sdg1
0|5|5|1|Hard4|Hard4|ntfs|721AD6601AD620C1|false|any||true|1456346133|

13

I have a powered usb3 hub. three (3) elements USB3 and one verbatim USB3 means 4 usb3 hds connected to the 4tb wdmycloud usb3 port, All are mounted with full space shown

14

Good point Jorn Johanesson. Good point.

My USB hub is not USB3. Also my hard drives are not USB3.
…

15

Generally that shouldn’t be a factor as USB3 is supposed to be backwards compatible with USB 2 and earlier.

16

At first glance the devices.sh output shows that the LaCie, WD,WD and the iomega hub is connected. The partitions.sh shows that the two WD drives are connected. Backups and hard4 are also mounted. Backups is mounted on /nfs/Backups but is not connected in partitions.sh.

RAC

17

Thanks!!

So, phisically, the hard drives are mounted but MyCloud only recognizes the two WD.

May I mount manually the other two?

18

your Wd elements should be USB3. Take a look at the connector it should be blue. Another thing is the improved USB3 transfer speed. If you connect a USB2 to a USB3 port you will only get the USB2 transfer speed.

19

Many thanks. I will check this!
But I guess this doesn’t solve the mounting problem, Is that right?

20

I have another HD USB2 and regardles if I connec it Directly to the wd mycloud USB3 port or to the USB3 hub It will not be mounted. It is a 80gb Revoltec HD. Old stuff :slight_smile: