Red Hat Bugzilla – Bug 164531
final shutdown for USB based UPS's fails
Last modified: 2007-11-30 17:11:10 EST
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Description of problem:
At the end of /etc/init.d/halt, a UPS driver program may be called to turn off
the UPS. The driver programs for USB based UPS devices are currently
dynamically linked with libusb.so, which resides in /usr/lib, but /usr has been unmounted at this point.
I have suggested that the driver programs in question be linked statically
with libusb, but have been told that this is not suitable, and to ask that
libusb.so be installed in /lib.
I don't really care how this problem is solved, but in order to make USB based
UPS driver programs work, they must work at the end of /etc/init.d/halt.
Note that in addition to this problem, /etc/init.d/halt needs to delay the
umount of /proc/bus/usb until after the above code. I have filed bug 164524
Version-Release number of selected component (if applicable):
Steps to Reproduce:
. I agree with Alfred, that the /etc/init.d/halt script needs some love, when
handling the /etc/killpower case :
. A possible workaround for Alfred's last note, about the missing /proc/bus/usb
usbfs, is to remount it just before issuing the ups shutdown command. In this
case, a "-u root" option must be added to this command, because the usb device
in the usbfs tree is no longer with the right 'nut' group, after remount.
. Another problem with the current script, is that $DEVICE is supposed to
contains a value, but this is not mandatory, if this information is in
/etc/ups/ups.conf instead, and if the $MODEL command is launched with the "-a
<myups>" option. I suggest to use the same invokation than in /etc/init.d/nut :
/sbin/$MODEL -u root -k $OPTIONS $DEVICE, and to remove the test "-n $DEVICE"
(btw, what's the purpose of $OPTIONS_HALT here ?, this options is not documented
. The problem is still in FC4, and rawhide.
it's now fixed in FC5 release. Thanks for your report.