USB HDD Spontaneously started unmounting itself

[Zhenya]

All,
I've had my N66 with .50 Merlin running for a while without an issue for a while now. Since the update I have had almost zero issue with the attached USB HDD (wall-powered). In the last two days, the drive has been unmouting itself - here is the log that could possibly be showing the issue. Any input would be great

May 17 02:13:20 kernel: usb 1-1.1: device descriptor read/64, error -145
May 17 02:13:20 kernel: usb 1-1.1: new high speed USB device using ehci_hcd and address 5
May 17 02:13:25 kernel: usb 1-1.1: device descriptor read/8, error -145
May 17 02:13:31 kernel: usb 1-1.1: device descriptor read/8, error -145
May 17 02:13:31 kernel: usb 1-1.1: new high speed USB device using ehci_hcd and address 6
May 17 02:13:36 kernel: usb 1-1.1: device descriptor read/8, error -145
May 17 02:13:41 kernel: usb 1-1.1: device descriptor read/8, error -145
May 17 02:13:41 kernel: hub 1-1:1.0: unable to enumerate USB device on port 1
May 17 02:13:41 kernel: usb 1-1.4: new high speed USB device using ehci_hcd and address 7
May 17 02:13:41 kernel: usb 1-1.4: configuration #1 chosen from 1 choice
May 17 02:13:41 kernel: scsi0 : SCSI emulation for USB Mass Storage devices
May 17 02:13:43 kernel: scsi 0:0:0:0: Direct-Access     Multi    Flash Reader     1.00 PQ: 0 ANSI: 0
May 17 02:13:43 kernel: sd 0:0:0:0: [sda] Attached SCSI removable disk
May 17 02:13:43 kernel: sd 0:0:0:0: Attached scsi generic sg0 type 0

 

[ColinTaylor]

Looks like a hardware issue to me. Check that the USB cable isn't loose or damaged. Try plugging it into another USB socket. Also check the HDD power supply isn't faulty.

 

[Zhenya]

So i've done a few test:

• Unplugging and replugging the usb cable into the same or different socket does not wake the drive backup
• Unplugging the power and replugging it starts the mounting process
• Harddrive still gets disconnected after a while - it almost looks like its going to some kind of sleep mode.
• Is there a more verbose logging i can run to see more info? Any other ideas?

 

[Haggster]

This is not a hardware issue of Zhenya's router - I had the same problem two days ago but didn't mention it here since I thought this might have been caused by... whatever; and only affected me.

I tried everything, unplugging and replugging the drive. Shutting ftp/nfs on and off, etc. ...only a reboot fixed it. I've never had that problem with any pre.-53 firmware.

I've only had that problem once so far, but maybe this is because I've got a script that reboots my router every morning at 5AM.

Fun fact: I've got an RT-AC87, so it seems to be a software issue.

Anyone else who had the same problem? Again: zero issues like this - ever - with any of the older firmwares.

PS: I was checking the logs at the time and AFAIR I could't find anything that looked related to me. Oh, and this "disk spindown" option, or whatever it is called, is untouched at "0" which is the default.