Mike Brady wrote:
> Kernel config attached. This is from an openSUSE 10.2
> 2.6.18.8-0.1-default x86_64 kernel.
>
> Looks like the only built in file system is minix?
>
> Thanks
>
> Mike
>
Mike,
could you try if the following patch works? it adds the minix
fs to the filesystems that can be used to create a valid initrd.img...
Regards,
-Andrea
Index: lib/SystemImager/UseYourOwnKernel.pm
===================================================================
--- lib/SystemImager/UseYourOwnKernel.pm (revision 3963)
+++ lib/SystemImager/UseYourOwnKernel.pm (working copy)
@@ -451,7 +451,7 @@
open(FILESYSTEMS,"<$file") or die("Couldn't open $file for reading.");
while (<FILESYSTEMS>) {
chomp;
- push (@filesystems, $_) if
(m/(cramfs|ext2|ext3|reiserfs|xfs|jfs)/);
+ push (@filesystems, $_) if
(m/(cramfs|ext2|ext3|reiserfs|xfs|jfs|minix)/);
}
close(FILESYSTEMS);
@@ -511,6 +511,15 @@
print "XXX just need to verify where the xfs module lives.\n";
}
+ # minix
+ elsif ((grep { /minix/ } @filesystems)
+ and (! -e "$modules_dir/kernel/fs/ext2/minix.o")
+ and (! -e "$modules_dir/kernel/fs/ext2/minix.ko")
+ and (! -e "$modules_dir/kernel/fs/ext2/minix.ko.gz")
+ ) {
+ $fs = "minix";
+ }
+
unless(defined $fs) {
die("Can't determine the appropriate filesystem to use for an
initrd.");
@@ -668,6 +677,8 @@
_create_initrd_jfs($staging_dir, $boot_dir);
} elsif ($fs eq 'xfs') {
_create_initrd_xfs($staging_dir, $boot_dir);
+ } elsif ($fs eq 'minix') {
+ _create_initrd_minix($staging_dir, $boot_dir);
} else {
die("FATAL: Unable to create initrd using $fs\n");
}
@@ -915,6 +926,63 @@
return 1;
}
+sub _create_initrd_minix($$) {
+
+ my $staging_dir = shift;
+ my $boot_dir = shift;
+
+ my $new_initrd = $boot_dir . "/initrd";
+
+ my $new_initrd_mount_dir = _mk_tmp_dir();
+
+ # cleanup routine.
+ $SIG{__DIE__} = sub {
+ my $msg = shift;
+ run_cmd("umount $new_initrd_mount_dir", $verbose, 0) if
($is_mounted);
+ unlink($new_initrd) if (-f $new_initrd);
+ run_cmd("rm -fr $staging_dir $new_initrd_mount_dir", $verbose, 1);
+ die $msg;
+ };
+
+ print ">>> New initrd mount point: $new_initrd_mount_dir\n"
if($verbose);
+ eval { mkpath($new_initrd_mount_dir, 0, 0755) };
+ if ($@) {
+ die "Couldn't mkpath $new_initrd_mount_dir $@";
+ }
+
+ my $cmd;
+
+ # loopback file
+ chomp(my $size = `du -ks $staging_dir`);
+ $size =~ s/\s+.*$//;
+ my $breathing_room = 2000;
+ $size = $size + $breathing_room;
+ run_cmd("dd if=/dev/zero of=$new_initrd bs=1024 count=$size",
$verbose, 1);
+
+ # fs creation
+ chomp(my $inodes = `find $staging_dir -printf "%i\n" | sort -u | wc
-l`);
+ $inodes = $inodes + 10;
+ run_cmd("mkfs.minix $new_initrd", $verbose, 1);
+
+ # mount
+ run_cmd("mount $new_initrd $new_initrd_mount_dir -o loop -t minix",
$verbose);
+ $is_mounted = 1;
+
+ # copy from staging dir to new initrd
+ run_cmd("tar -C $staging_dir -cf - . | tar -C $new_initrd_mount_dir
-xf -", $verbose, 0);
+
+ # umount and gzip up
+ run_cmd("umount $new_initrd_mount_dir", $verbose);
+ $is_mounted = 0;
+ run_cmd("gzip -f -9 -S .img $new_initrd", $verbose);
+ run_cmd("ls -l $new_initrd.img", $verbose, 1) if($verbose);
+
+ # cleanup the temporary mount dir
+ run_cmd("rm -fr $new_initrd_mount_dir", $verbose, 1);
+
+ return 1;
+}
+
#
# Usage:
# run_cmd("my shell command", 1, 1);
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