Package: fai-doc
Version: 3.2.20.1
Severity: wishlist
Tags: patch

In the simple example, 20-hwdetect uses
  mount -t usbfs  usbfs /proc/bus/usb
in order to mount usbfs. When doing a softupdate, /proc/bus/usb might already
be mounted, resulting a spare error message
mount: usbfs already mounted or /proc/bus/usb busy
mount: according to mtab, procbususb is already mounted on /proc/bus/usb

Simply adding a check like 

grep /proc/bus/usb /proc/mounts > /dev/null
if [ $? -ne 0 ] ; then
  mount -t usbfs  usbfs /proc/bus/usb
fi

avoids this warning.


-- System Information:
Debian Release: squeeze/sid
  APT prefers testing
  APT policy: (500, 'testing')
Architecture: amd64 (x86_64)

Kernel: Linux 2.6.30-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash

-- no debconf information
--- 20-hwdetect 2009-11-05 19:30:13.178267906 +0100
+++ 20-hwdetect.neu     2009-11-05 19:33:22.230765643 +0100
@@ -36,7 +36,11 @@
 #[ -x /sbin/discover-modprobe ] && /sbin/discover-modprobe

 # now we can mount the USB filesystem
-mount -t usbfs  usbfs /proc/bus/usb
+# first check, whether it's already mounted
+grep /proc/bus/usb /proc/mounts > /dev/null
+if [ $? -ne 0 ] ; then
+  mount -t usbfs  usbfs /proc/bus/usb
+fi

 modprobe -a sd_mod sr_mod

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