Re: grub nilfs2 module

[Jiro SEKIBA <jir-hfpbi5WX9J54Eiagz67IpQ@public.gmane.org>]

Hi,

> It would be nice if you could tell us belief usage of the patch.

OK, sure.  It's against bazaar repository, so you have to build
it from repository source instead of latest stable release tarball.

To build with stable release(1.97.2), you need to modify fs/nilfs2.c
not to use grub_xasprintf, but use grub_malloc and grub_sprintf.

You may get reject for makefile, but I think it'll be OK.


Here are the instruction to retrieve grub repository and build the softoware.

$ bzr branch http://bzr.savannah.gnu.org/r/grub/trunk/grub
$ cd grub
$ patch -p0 < /path/to/the/patch
$ sh autogen.sh
$ ./configure
$ make

you need "make install" as usual.  It will install under /usr/local
without giving any parameters for ./configure.

The "make install" won't install grub to MBR.
To install grub into MBR, you have to "grub-install" to target disk.

For example, assume that you have nilfs2 filesystem on hdb1,
mounted on /mnt and want to enable hdb as bootable.  You'll do

# grub-install --root-directory=/mnt /dev/hdb

This will install grub into hdb's MBR and other required files into
following 32KiB blocks.  Fuhtermore, it'll install files under
/mnt/boot/grub.  Those files are not required to boot grub to read
the filesystem.

hdb is now self bootable disk.  You'll just connect it as hdb and
grub will boot up.

Note, during grub-install, /boog/grub/grub.cfg will be copied int to
/mnt/boo/grub, which is not the one for hdb.  So you have edit menu
at first time you boot with hdb.  After boot the system, you can reproduce
the menu by grub-mkcofnig > /boot/grub/grub.cfg

Enjoy!

regards,
-- 
Jiro SEKIBA <jir-hfpbi5WX9J54Eiagz67IpQ@public.gmane.org>
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