+
+ modules.close()
+ except IOError:
+ log.write( "Couldn't read /tmp/loadedmodules, continuing.\n" )
+
+ try:
+ modules= file("/proc/modules", "r")
+
+ # Get usage count for USB
+ usb_usage = 0
+ for line in modules:
+ try:
+ # Module Size UsageCount UsedBy State LoadAddress
+ parts= string.split(line)
+
+ if parts[0] == "usb_storage":
+ usb_usage += int(parts[2])
+ except IndexError, e:
+ log.write( "Couldn't parse /proc/modules, continuing.\n" )
+
+ modules.seek(0)
+
+ for line in modules:
+ try:
+ # Module Size UsageCount UsedBy State LoadAddress
+ parts= string.split(line)
+
+ # While we would like to remove all "unused" modules,
+ # you can't trust usage count, especially for things
+ # like network drivers or RAID array drivers. Just try
+ # and unload a few specific modules that we know cause
+ # problems during chain boot, such as USB host
+ # controller drivers (HCDs) (PL6577).
+ # if int(parts[2]) == 0:
+ if re.search('_hcd$', parts[0]):
+ if usb_usage > 0:
+ log.write( "NOT unloading %s since USB may be in use\n" % parts[0] )
+ else:
+ log.write( "Unloading %s\n" % parts[0] )
+ utils.sysexec_noerr( "modprobe -r %s" % parts[0], log )
+ except IndexError, e:
+ log.write( "Couldn't parse /proc/modules, continuing.\n" )
+ except IOError:
+ log.write( "Couldn't read /proc/modules, continuing.\n" )
+
+
+ kargs = "root=%s ramdisk_size=8192" % PARTITIONS["mapper-root"]
+ if NODE_MODEL_OPTIONS & ModelOptions.SMP:
+ kargs = kargs + " " + "acpi=off"
+ try:
+ kargsfb = open("/kargs.txt","r")
+ moreargs = kargsfb.readline()
+ kargsfb.close()
+ moreargs = moreargs.strip()
+ log.write( 'Parsed in "%s" kexec args from /kargs.txt\n' % moreargs )
+ kargs = kargs + " " + moreargs