[Solved]UPS Plugin: usbhid-ups driver loads twice

fstyle · 2. Januar 2014

Hai Folks,

today I updated my OMV installation to 0.5.28 (and installed owncloud manually but I think it's not releated to this issue).

I have an APC Back-UPS CS 650 with USB connected to my box. Plug-in version: 0.5.4
Since the update I found that the UPS plugin is not working. Giving the following errors in syslog:

Code

Jan  2 13:55:47 freenas usbhid-ups[1926]: Got disconnected by another driver: Device or resource busy
Jan  2 13:55:47 freenas kernel: [ 1309.672962] usb 4-2: usbfs: process 1926 (usbhid-ups) did not claim interface 0 before use
Jan  2 13:55:47 freenas kernel: [ 1309.673041] usb 4-2: usbfs: process 1926 (usbhid-ups) did not claim interface 0 before use
Jan  2 13:55:50 freenas usbhid-ups[4715]: libusb_get_interrupt: error submitting URB: Device or resource busy
Jan  2 13:55:50 freenas usbhid-ups[4715]: libusb_get_report: error sending control message: Device or resource busy

I found out that the UPS's driver usbhid-ups had 2 processes running at the same time. This caused nut daemon unable to communicate to the driver (usbhid-ups with the lower PID).
After I killed the lower PID process nut could communicate with the driver automatically.

Checking /etc/init.d/nut I found out that the daemon itself starts the driver. (the one with higher PID)
I think the daemons behaviour is fine, but I couldn't find what is starting usbhid-ups driver before /etc/init.d/nut starts. Maybe it has to do something around udev rules?

(reproduce note: If you just install the plug-in from the webgui you win't notice this until you restart OMV.)

As a workaround I edited /etc/init.d/nut to pkill usbhid-ups before starting it but it's not an acceptable solution.

Can somebody say how/where could OMV starts the first instance of usbhid-ups ?

tekkb · 3. Januar 2014

Give results of this command:

dpkg -l | grep openmediavault

fstyle · 3. Januar 2014

Code

root@freenas:~# dpkg -l | grep openmediavault
ii  openmediavault                     0.5.28                         Open network attached storage solution
ii  openmediavault-clamav              0.5.6                          OpenMediaVault ClamAV plugin
ii  openmediavault-keyring             0.2                            GnuPG archive keys of the OpenMediaVault archive
ii  openmediavault-mysql               0.5.13                         MySQL plugin for OpenMediaVault.
ii  openmediavault-nut                 0.5.4                          OpenMediaVault Network UPS Tools (NUT) plugin
ii  openmediavault-omvextrasorg        0.5.36                         OMV-Extras.org Package Repositories for OpenMediaVault
ii  openmediavault-transmissionbt      0.5.17                         OpenMediaVault Transmission (BitTorrent client) plugin
ii  openmediavault-website             0.5.5                          OpenMediaVault website plugin

tekkb · 3. Januar 2014

Just do this...

apt-get --purge remove openmediavault-nut
apt-get --purge remove nut

Then reinstall via the plugin in the web-gui.

fstyle · 3. Januar 2014

hi tekkbebe,

It didn't help,
I ran the commands, rebooted, installed and set up the plugin again. (it could communicate, only 1 usbhid-ups running)
But after another reboot usbhid-ups got running twice again.

mbourd25 · 6. Januar 2014

Hi fstyle, I tried the UPS Plugin also with my APC Back-UPS ES 750 connected to the USB, it did the same thing. It only work once.

I think it's a problem with the plugin.

fstyle · 7. Januar 2014

thanks for the reply mbourd25!

workaround is to kill usbhid-ups with the higher PID after reboot, until the plugin gets fixed

fstyle · 15. Januar 2014

latest openmediavault-nut 0.5.5 seems solved the issue

mbourd25 · 15. Januar 2014

Hi fstyle, I retried the plugin 0.5.5 and it's now working properly.

I even unplugged my openmediavault server from my UPS to test it. I set the server to shutdown when it's running off the UPS for more then 30 seconds and it shutdown right away.

Good job gang.

Jetzt mitmachen!