Brian,
I made a patch to reduce the size of the UYOK initrd.img, adding the
--optimize-uyok to si_prepareclient. Using this option only the modules
loaded in the golden client (and the mandatory modules from
UYOK.modules_to_include) are included into the initrd. Moreover I added
other useless modules to the UYOK.modules_to_exclude list.
I've successfully tested it with suse10 and the UYOK initrd.img has been
reduced from 24MB to 5.4MB.
What do you think? any suggestion?
Cheers,
-Andrea
Index: lib/SystemImager/UseYourOwnKernel.pm
===================================================================
--- lib/SystemImager/UseYourOwnKernel.pm (revision 3581)
+++ lib/SystemImager/UseYourOwnKernel.pm (working copy)
@@ -29,12 +29,13 @@
#
# Usage:
-# SystemImager::UseYourOwnKernel->create_uyok_initrd($arch);
+# SystemImager::UseYourOwnKernel->create_uyok_initrd($arch, $optimize, $all_modules, $verbose);
#
sub create_uyok_initrd() {
my $module = shift;
my $arch = shift;
+ my $optimize = shift;
my $all_modules = shift;
$verbose = shift;
@@ -84,11 +85,22 @@
#
# Copy modules
#
+ my @modules = get_load_ordered_list_of_running_modules();
print ">>> Copying modules to new initrd from: /lib/modules/$uname_r...\n" if( $verbose );
mkdir("$staging_dir/lib/modules", 0755) or die "$!";
- $cmd = qq(rsync -a --exclude=build --exclude=source $modules_to_exclude /lib/modules/$uname_r $staging_dir/lib/modules/);
- !system( $cmd ) or die( "Couldn't $cmd." );
-
+ unless ($optimize) {
+ $cmd = qq(rsync -a --exclude=build --exclude=source $modules_to_exclude /lib/modules/$uname_r $staging_dir/lib/modules/);
+ !system( $cmd ) or die( "Couldn't $cmd." );
+ } else {
+ # Copy only loaded modules ignoring exclusions.
+ foreach my $module ( @modules ) {
+ $cmd = qq(rsync -aR $module $staging_dir);
+ !system( $cmd ) or die( "Couldn't $cmd." );
+ }
+ # Copy module configuration files.
+ $cmd = qq(rsync -R /lib/modules/$uname_r/* $staging_dir);
+ !system( $cmd ) or die( "Couldn't $cmd." );
+ }
#
# add modules and insmod commands
#
@@ -97,7 +109,6 @@
open( FILE,">>$file" ) or die( "Couldn't open $file for appending" );
print ">>> Appending insmod commands to ./my_modules_dir/INSMOD_COMMANDS...\n" if( $verbose );
- my @modules = get_load_ordered_list_of_running_modules();
foreach my $module ( @modules ) {
print " >> insmod $module\n" if( $verbose );
print FILE "insmod $module\n";
Index: sbin/si_prepareclient
===================================================================
--- sbin/si_prepareclient (revision 3581)
+++ sbin/si_prepareclient (working copy)
@@ -160,6 +160,11 @@
is advantageous if you know you don't need a UYOK kernel, and you
want this command to complete faster.
+ --optimize-uyok
+ Optimize UYOK (Use Your Own Kernel) initrd.img for size including
+ only the kernel modules loaded in the golden client and the modules
+ in /etc/systemimager/UYOK.modules_to_include.
+
--all-modules
Include every single module under /lib/modules/`uname -r`/ when
creating the UYOK (Use Your Own Kernel) initrd.img.
@@ -183,6 +188,7 @@
"quiet" => \my $quiet,
"rpm|rpm-install" => \my $rpm,
"no-uyok" => \my $no_uyok,
+ "optimize-uyok" => \my $optimize_uyok,
"all-modules" => \my $all_modules,
"version" => \my $version,
"server=s" => \my $server,
@@ -209,6 +215,24 @@
exit 1;
}
+if($no_uyok and $optimize_uyok) {
+ print "FATAL: --no_uyok option conflicts with --optimize_uyok!\n";
+ print qq(Try "$progname --help" for more info.\n);
+ exit 1;
+}
+
+if($no_uyok and $all_modules) {
+ print "FATAL: --no_uyok option conflicts with --all_modules!\n";
+ print qq(Try "$progname --help" for more info.\n);
+ exit 1;
+}
+
+if($optimize_uyok and $all_modules) {
+ print "FATAL: --optimize_uyok option conflicts with --all_modules!\n";
+ print qq(Try "$progname --help" for more info.\n);
+ exit 1;
+}
+
# Make sure we have certain tools that we need.
which('rsync') or croak("'rsync' is required for $progname to function properly. Please see http://systemimager.org for more details.");
which('systemconfigurator') or croak("'systemconfigurator' is required for $progname to function properly. Please see http://systemimager.org for more details.");
@@ -651,7 +675,7 @@
my $arch = get_arch();
my $verbose;
unless($quiet) { $verbose = 1; }
- SystemImager::UseYourOwnKernel->create_uyok_initrd( $arch, $all_modules, $verbose );
+ SystemImager::UseYourOwnKernel->create_uyok_initrd( $arch, $optimize_uyok, $all_modules, $verbose );
}
SystemImager::Common->write_auto_install_script_conf_footer($file);
Index: etc/UYOK.modules_to_exclude
===================================================================
--- etc/UYOK.modules_to_exclude (revision 3581)
+++ etc/UYOK.modules_to_exclude (working copy)
@@ -21,8 +21,11 @@
kernel/sound/*
kernel/drivers/video/*
kernel/drivers/parport/*
+kernel/net/ipv4/netfilter/*
+kernel/net/ipv6/netfilter/*
+kernel/drivers/input/joystick/*
+kernel/drivers/media/*
-
#
# Locally customized exclusions go here:
#
