[Server-devel] [XSCE] systemd-udevd timeout error while running the set of scripts using usbmount

[Adam Holt]

Saintly souls helping OLE Nepal install XSCE 5.0 -- Sumit asks that we copy
the solution below (and original question at bottom), for the benefit of
all-

On Thu, Jul 24, 2014 at 5:52 PM, James Cameron <quozl at laptop.org> wrote:

> On Thu, Jul 24, 2014 at 03:50:47AM -0700, Sumit Acharya wrote:
> > Thanks for all of your suggestions.
> > I worked around the solution to the problem something like this:
> >
> > 1. Created a udev rule that starts a new service when external
> > hard-drive is detected
> >
> > KERNEL=="sd?1", SUBSYSTEMS=="scsi", DRIVERS=="sd", ACTION=="add",
> RUN+="/usr/
> > bin/systemctl --no-block start nexc@%k.service"
>
> For further optimisation in future, this might be reduced to the
> SYSTEMD_WANTS or SYSTEMD_USER_WANTS keyword.  I've not tested, but
> that's the keyword I saw mentioned by other people in the same
> situation.
>
> > 2. From the service called the update-script to run.
> >
> > [Unit]
> > Description=Installs NEXC content to the system
> > BindsTo=dev-%i.device
> >
> > [Service]
> > Type=simple
> > ExecStart=/root/nexc-update.sh %I
>
> Good work!
>
> --
> James Cameron
> http://quozl.linux.org.au/
>


From: Sumit Acharya <sumit.acharya at olenepal.org>
Date: Tue, Jul 22, 2014 at 8:30 AM
Subject: [XSCE] systemd-udevd timeout error while running the set of
scripts using usbmount
To: xsce-devel at googlegroups.com

Dear all,

I am currently working in migrating epustakalaya (digital library system)
from XS-0.7 based schoolserver to fedora-18/XSCE-5.0 based system. So far
all the contents are running well in the new system. I am facing a problem
in auto-installing the contents from external hard-drive to the system.

As similar to the earlier NEXS versions, I am trying to use the usbmount
feature. While the script is running and the contents are being  installed,
'systemd-udevd' genarates a timeout error (after 30 secs of the usb drive
plugged in) and the process gets terminated. I find a timeout value to be
30 inside /sys/devices/pci0000:00/0000:
00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host6/target6:0:0/6:0:0:0/. Therefore, I
added a udev rule to change the timeout value of the device, but that
didn't  work.

udev rule:
81-nexc.rules
KERNEL=="sdb", SUBSYSTEMS=="scsi", DRIVERS=="sd", ACTION=="add",
RUN+="/root/NEXC-timeout.sh"

NEXC-timeout.sh
#!/bin/bash
test=`echo $(udevadm info -q path -n /dev/sdb1) | sed
's/\/block\/sdb\/sdb1//g'`
echo 120 > /sys$test/timeout

Next, I tried to modify the timeout value by adding following lines to
/usr/share/usbmount/usbmount script right after mounting the external
drive, but that doesn't seem to work either.
echo 60 > /sys$DEVPATH/../device/timeout

The timeout values in both cases replace the respective default values, but
has no effect in operation.

What may be the possible ways of fixing this bug or working around the
problem?
Is there some other ways of auto-updating the contents from external
hard-drive to the schoolserver in XSCE 5.0 ?

Thanks in advance.
Sumit

Complete error message:
Jul 22 17:15:06 schoolserver.test.xsce systemd-udevd[368]: worker [3055]
/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host6/target6:0:0/6:0:0:0/block/sdb/sdb1
timeout; kill it
Jul 22 17:15:06 schoolserver.test.xsce systemd-udevd[368]: seq 2284
'/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1.3/2-1.3:1.0/host6/target6:0:0/6:0:0:0/block/sdb/sdb1'
killed
Jul 22 17:15:06 schoolserver.test.xsce systemd-udevd[368]: worker [3055]
terminated by signal 9 (Killed)
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