[Nut-upsuser] mge-shut driver fails almost after every reboot

[Arnaud Quette]

Hello Panagiotis

2015-04-01 16:28 GMT+02:00 Panagiotis Kritikakos <
panagiotis.kritikakos at nikitec.gr>:

> Hello all,
>
> OS name: FreeNAS 9.3
> NUT version: 2.7.2
> NUT installed method: Bundled with FreenNAS 9.3
> Device: EATON 5SC 1000 (http://powerquality.eaton.
> com/Products-services/Backup-Power-UPS/5SC.aspx?cx=5&
> wtredirect=www.eaton.com/5SC&GUID=B81251A4-F34E-4373-94B3-B4FB3D0CBCA8)
>
> Problem description:
>
> This was originally reported as bug to FreeNAS (https://bugs.freenas.org/
> issues/8049#change-41087) and was asked to post this upstream, so here it
> goes.
>
> The issue with the driver has been seen in FreeNAS 9.3-STABLE. While the
> serial connection with the UPS (Eaton 5 5SC Serial with mge-shut driver) is
> working initially, almost after every reboot, the driver is failing with
> the message "UPS failed - Driver not connected". This was not the case with
> FreeNAS 9.2 and NUT 2.7.1.
>
> Additional information:
>
> ~# /usr/local/libexec/nut/mge-shut -DD -a ups-filesrv01
> Network UPS Tools - Generic HID driver 0.38 (2.7.2)
> SHUT communication driver 0.84
> Warning: This is an experimental driver.
> Some features may not function correctly.
>
>    0.000000     debug level is '2'
>    0.000901     upsdrv_initups...
>    0.000911     libshut_open: using port /dev/cuau0
>    0.001034     entering shut_synchronise()
>    0.037281     Communication with UPS established
>    0.037289     entering shut_get_descriptor(n 01, 18)
>    0.120208     shut_wait_ack(): ACK received
>    0.371873     shut_wait_ack(): ACK received
>    9.504230     shut_wait_ack(): Nothing received
>    9.589858     shut_wait_ack(): ACK received
>    9.742965     shut_wait_ack(): Nothing received
>    9.867744     shut_wait_ack(): ACK received
>    9.971912     - VendorID: 0463
>    9.971919     - ProductID: ffff
>    9.971923     - Manufacturer: Eaton
>    9.971926     - Product: unknown
>    9.971929     - Serial Number: unknown
>    9.971932     - Bus: serial
>    9.971935     Device matches
>    9.971939     entering shut_get_descriptor(n 21, 9)
>   13.027594     shut_wait_ack(): Nothing received
>   16.028593     shut_wait_ack(): Nothing received
>   16.055659     shut_wait_ack(): Nothing received
>   16.055670     Max tries reached while waiting for ACK, still getting
> errors
>   16.055674     entering shut_synchronise()
>   16.197941     Unable to get HID descriptor ()
>   16.197949     No matching HID UPS found
>
> Thank you in advance!
>

The only diff I see between shut in 2.7.1 and 2.7.2 is the following:

--- ../nut-2.7.1/drivers/libshut.c    2013-10-02 14:16:42.000000000 +0200
+++ drivers/libshut.c    2014-02-25 16:39:34.000000000 +0100
@@ -312,7 +312,7 @@
     /* FIXME: add variable baudrate detection */
     *upsfd = ser_open(device_path);
     ser_set_speed(*upsfd, device_path, B2400);
-    setline(*upsfd, 0);
+    setline(*upsfd, 1);

     /* initialise communication */
     if (!shut_synchronise(*upsfd))


This is tied to the PnP feature, and was reverted with the following commit:
https://github.com/networkupstools/nut/commit/75b0ce8b952d7c55880f7a019ba61ec05b45e6a7

Never had time to get the complete consideration on this, so I'm still
lacking visibility.
it's still unclear to me why it does not work for you. Is FreeNAS linux
based or BSD?
I've just tested a pristine 2.7.2 on Debian Jessie + 5SC700, and it works
fine.

would you be able to test a patch or a git branch?

thanks and cheers,
Arno
-- 
Eaton Data Center Automation - Opensource Leader
NUT (Network UPS Tools) Project Leader - http://www.networkupstools.org
Debian Developer - http://www.debian.org
Free Software Developer - http://arnaud.quette.fr
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