import string
+import re
from Exceptions import *
import utils
ROOT_MOUNTED= 0
vars['ROOT_MOUNTED']= 0
- if BOOT_CD_VERSION[0] == 2:
- log.write( "Unloading modules and chaining booting to new kernel.\n" )
- else:
- log.write( "Chaining booting to new kernel.\n" )
+ log.write( "Unloading modules and chaining booting to new kernel.\n" )
# further use of log after Upload will only output to screen
log.Upload()
cancel_boot_flag= "/tmp/CANCEL_BOOT"
utils.sysexec( "touch %s" % cancel_boot_flag, log )
- # on 2.x cds (2.4 kernel) for sure, we need to shutdown everything to
- # get kexec to work correctly
+ # on 2.x cds (2.4 kernel) for sure, we need to shutdown everything
+ # to get kexec to work correctly. Even on 3.x cds (2.6 kernel),
+ # there are a few buggy drivers that don't disable their hardware
+ # correctly unless they are first unloaded.
utils.sysexec_noerr( "ifconfig eth0 down", log )
for line in modules:
module= string.strip(line)
if module != "":
+ log.write( "Unloading %s\n" % module )
utils.sysexec_noerr( "modprobe -r %s" % module, log )
+
+ modules.close()
+
+ modules= file("/proc/modules", "r")
+
+ for line in modules:
+ try:
+ # Module Size UsageCount UsedBy State LoadAddress
+ parts= string.split(line)
+
+ # 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]):
+ 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 load /tmp/loadedmodules to unload, continuing.\n" )