[systemd-devel] udev event on usb unpluged

[christophe.jalady at free.fr]

sorry for the delay.
Attached are the logs.

The log show the hole process meaning:
   Boot
   Plug of the usb cable: the device is shown as a "mass-storage" on the other device.
   Other device umount. I unplug the cable.
   Shutdown of the device.

'jc.log' is the log from my script. You will see 2 "add" event, but no "remove" event.
'udev.log' if the log from "udevadm monitor > /var/log/udev.log 2>&1" since boot time (I launch it from an init.d script at startup).


1) Why I see event in my jc.log but not in udev.log ??
2) Why is there no "usb" event in udev.log (nor add/change or remove ...) ?


For completeness, I attach also my .rule and .sh scripts.

Thanks for your help.

Christophe 




----- Mail original -----
De: "Robert Milasan" <rmilasan at suse.com>
À: "christophe jalady" <christophe.jalady at free.fr>
Cc: systemd-devel at lists.freedesktop.org
Envoyé: Mercredi 26 Août 2015 14:35:24
Objet: Re: [systemd-devel] udev event on usb unpluged

On Wed, 26 Aug 2015 15:32:13 +0200 (CEST)
<christophe.jalady at free.fr> wrote:

> >They are not referring to your device, but the machine on which you
> >are
> running the rule.
> >In a terminal/console you run: udevadm monitor
> >The do the removal itself and see what 'udevadm monitor' says.
> 
> this is the problem: the machine which are running the rule is a
> "specific robotic device" with one usb port and no screen (and no
> network device). Either I connect through ssh using the usb cable
> (eth over usb) or I use the usb cable to test my plug/unplug process.
> I cannot have a console _and_ test the unplugging at the same time.

Then login into that machine and run screen, in which you run:
'udevadm monitor -u -p > /tmp/udev.log 2>&1'

Do the necessary removal of the usb cable or whatever, then attach
the usb cable again, login again and check the log.

> 
> Christophe
> 


-- 
Robert Milasan

L3 Support Engineer
SUSE Linux (http://www.suse.com)
email: rmilasan at suse.com
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