Re: Integrate fully partman-reiser4 into d-i

[Edward Shishkin <edward.shishkin@gmail.com>]

On 11/12/2015 12:28 PM, Jose R R wrote:
> On Mon, Sep 21, 2015 at 7:49 AM, Edward Shishkin
> <edward.shishkin@gmail.com> wrote:
>> On 09/21/2015 01:12 PM, Colin Watson wrote:
>>> On Sun, Sep 20, 2015 at 07:40:37AM -0700, Jose R R wrote:
>>>> I have realized that although partman-reiser4 udeb enables Reiser4 to
>>>> be listed as an option during the Debian-Installer routine of a
>>>> netboot ISO image, the lack of support for reiser4 in GNU Parted
>>>> (Debian's libparted) prevents installation from the GUI interface.
>>> It should be pretty easy to add that to parted, since nowadays the only
>>> filesystem support it has is probing support.  I suggest preparing a
>>> patch against git://git.sv.gnu.org/parted.git master that adds the
>>> ability to detect existing reiser4 partitions and sending it upstream;
>>> it should only be on the order of a hundred lines.
>>
>>
>> Does anybody care to prepare the patch?
> I am working on it Ed. I have been ironing out some wrinkles from the
> last Reiser4 patch proposed several years ago in the GNU Parted
> mailing lists. It's components and structure were basically cloned by
> the initial btrfs patch submitted to Debian. autoreconf has been my
> friend ;-)
>
>> I think we just need to a read a sector at REISER4_MAGIC_OFFSET
>> and check the magic string ("ReIsEr4"), see definition of the struct
>> reiser4_master_sb.
> Please enlighten me with reference to its documentation -- online or
> in the Reiser4 source code?

Alas, only source code..

In reiser4 kernel sources look for REISER4_MAGIC_OFFSET
and REISER4_SUPER_MAGIC_STRING.

In reiser4progs it is called REISER4_MASTER_OFFSET and
REISER4_MASTER_MAGIC respectively.

Thanks,
Edward.