[Solved] External hard drive issue

Ohthreefive · May 1, 2019 at 11:21 PM

Running 9.0.1 on RPi2

Have connected a 2Tb WD drive via powered hub

The drive is formatted to ext4 and fully readable on my Solus desktop machine

Navigating the LE file manager to /var/media shows my drive but if I enter it none of the 5 directories on it are visible.

Same if I `ls /var/media/WD2Tb_drive` Over ssh - nothing seen on the drive.

So it seems to have been mounted but... why aren’t the directories visible or navigable?

I have an almost identical 2Tb WD drive attached to my home server for Plex. Only difference is that it’s NTFS file system. If I attach that to the RPi everything works fine.

Any tips would be helpful. I’ve done `dmesg `df -h` etc. but can’t seem to think of a way forward in my investigation!

**Iridium** · May 2, 2019 at 5:42 PM Official Post

Sounds like a power issue or a permission issue. Do you use SElinux on your Solus machine?

Please provide the URL from.

dmesg | paste

and the output of

ls -al /var/media/<directory>

**Da Flex** · May 2, 2019 at 6:38 PM Official Post

Quote from Ohthreefive

I have an almost identical 2Tb WD drive attached to my home server for Plex. Only difference is that it’s NTFS file system. If I attach that to the RPi everything works fine.

EXT4 has a Linux rights management. You probably don't have the rights to enter some directories. You can change it with the "chown" and "chmod" commands from SSH login.

Ohthreefive · May 3, 2019 at 9:42 PM

Sorry, Iridium, no idea about SElinux

I had thought about power but the NTFS drive that works is identical so I think I can conclude the power from the hub is ok based on that?

`dmesg` output: http://ix.io/1hws

There should be 5 directories on the drive:

Code

moviePi:~ # ls -al /var/media/WD2Tb_White/
total 0
drwx------    2 root     root            60 Jun 22  2018 .
drwxr-xr-x    3 root     root            60 Jun 22  2018 ..
-rw-r--r--    1 root     root             0 Jun 22  2018 .udevil-mount-point

**Da Flex** · May 3, 2019 at 11:29 PM Official Post

The file ".udevil-mount-point" says, it has been mounted, but the last lines of your log file say, it has been reseted (after the mount):

Code

[   11.304998] sd 0:0:0:0: [sda] 3906963456 512-byte logical blocks: (2.00 TB/1.82 TiB)
[   11.305531] sd 0:0:0:0: [sda] Write Protect is off
[   11.305546] sd 0:0:0:0: [sda] Mode Sense: 47 00 10 08
[   11.306038] sd 0:0:0:0: [sda] No Caching mode page found
[   11.306052] sd 0:0:0:0: [sda] Assuming drive cache: write through
[   11.366122]  sda: sda1
[   11.372714] sd 0:0:0:0: [sda] Attached SCSI disk
[   87.270874] usb 1-1.3.1.4: reset high-speed USB device number 7 using dwc_otg
[  119.177588] usb 1-1.3.1.4: reset high-speed USB device number 7 using dwc_otg

The mount / reset cycle can indicate a power issue. Attach a separate PSU at the disk to get extra wattage, or use a better PSU at the hub.

Ohthreefive · May 17, 2019 at 1:09 PM

Despite my confidence, power was the issue. I bought this: Belkin mains USB hub and it’s working fine now.

It has a higher output that my older PiHut hub. Still find it a bit strange that the PiHut can power one WD 2Tb drive but not the other but more importantly, I have a perfectly functional LibreELEC setup now!

Thanks for the help.

[Solved] External hard drive issue

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