[gentoo-powerpc] Re: working towards becoming a gentoo developer

[Kevin Zhao]

Hi All :
     Long Time No See~Hope everything goes well:-)
     Recently I am working on making ppc64le Gentoo Livecd. Now the newest
status is as below:
     1 .I have followed catalyst , build--> livecd-stage1 and
livecd-stage2.
     2. Replace the bootloader from yaboot to grub.
     3. The grub binaries I have copyed from Rhel7.1-ppc64le
     4. Change the boot_info.txt to a new one from Rhel7.1-ppc64le
     5. Build a squashfs images.
     6. Build a kernel and initramfs (I have check that the kernel is good
when using it replace a ubuntu-ppc64le kernel .)
     7. use command "mkisofs -v -r -T -U -l -cache-inodes -chrp-boot -V {
clst_iso_volume_id} -o gentoolive.iso /path/" to generate a Livecd.

    Now when loading iso to a guests, I can enter into grub, but have meet
 problem when initramfs runs: The details are as belows:

The *grub.cfg* file is as below:
=============================================================================================================

set default=0
set timeout=10

echo -e "\nWelcome to the Gentoo PPC64LE!\n\n"

menuentry "Gentoo PPC64LE" {
 * linux /boot/vmlinux-4.2.1-aufs root=/dev/ram0 init=/linuxrc
looptype=squashfs loop=/image.squashfs  cdroot ro
                          *
*  echo 'Loading initial ramdisk ..............'*
*  initrd /boot/initramfs-genkernel-ppc64le-4.2.1-aufs*
}

menuentry 'Reboot' {
  reboot
}

menuentry 'Exit to Open Firmware' {
  exit
}
==============================================================================================================

   I have loaded it with a guest,guest xml file is here(add two iso just
for  compared,one is Gentoo and one is ubuntu ) :
https://bpaste.net/show/271874e8ca8b
   But the initramfs will bolcked when mount cdrom device. The error log
Link is: https://bpaste.net/show/f029aff8e633
   You can see that , mount -t auto /dev/sr0 /mnt/cdrom  failed.
   *Also, I enter into busybox, manally use command "mount -t iso9660
/dev/sr0 /mnt/cdrom", it shows "No such device"*
[image: 内嵌图片 1]
  * ls -l /dev/ :*
*   Find that there are :    "/dev/sr0   /dev/sr1",but there is no
"/dev/cdrom"*
*   But I 'm sure that kernel has the module "sr_mod" and "cdrom". Because
we have used this kernel and stage3 to make a workable gentoo image(running
in KVM).*

*So, *now I am thinking of asking you for some advice.I've blocked here for
about 2 weeks .Any advice will be really appreciated. Loooooooking forwards
to your reponse   :-)


2015-10-28 13:38 GMT+08:00 Kevin Zhao <kevin.zhaoshuai@×××××.com>:

> OK , thanks Anthony😁
>
> 2015-10-27 19:20 GMT+08:00 Anthony G. Basile <blueness@g.o>:
>
>> On 10/27/15 4:58 AM, Kevin Zhao wrote:
>>
>>> Hi Folks，
>>>                Last week we compiling a gentoo stage3 for ppc64le and I
>>> send
>>> it to the google drive. The one thing I  have to say is that when I
>>> compiling the stage3, I use the gcc flags "-mcpu=power8 -mtune=power8".
>>>                After I copy the stage3 to a power7 based ppc64le machine,
>>> chroot to the stage3,running "emerge --info" it shows that "illegal
>>> instruction" . I guess that the stage3 built with the gcc flag
>>> "-mcpu=power8 -mtune=power8".
>>>
>> Yes.
>>
>>>               As we know ,our community have a power7, so it may not be
>>> able
>>> to test the new stage3.  Leno, Linda and I have some power8 based
>>> machines,
>>> but these machines can not be accessed from outer network, so we could
>>> afford to take some work of stage3 test.  If there is a guide of file
>>> system or a instruction , it could be better :-).
>>>               Pls feel free to let me know if you have any question~
>>>               Thanks~
>>>
>>
>> There are still two other issues with that work: the CHOST name and the
>> structure of the profiles.  I've communicated that to the
>> gentoo-powerpc@×××××××××××.org and I believe I cc'ed people. Nonetheless
>> I think I can fix all these issues, but I'm waiting for the osuosl power8
>> ppc64le to be made available.
>>
>>
>>
>>> 2015-10-21 13:33 GMT+08:00 Leno Hou <lenohou@×××××.com>:
>>>
>>> On Wed, Oct 21, 2015 at 10:53 AM, Kevin Zhao <kevin.zhaoshuai@×××××.com>
>>>> wrote:
>>>>
>>>> Hi folks,
>>>>>       We have finish  compiling  stage3 by the catalyst. The process is
>>>>> seed-stage3--> stage1 --> stage2 --> stage3.
>>>>> Here is the link of stage3:
>>>>>
>>>>>
>>>>> https://drive.google.com/file/d/0B2k84p6709AyTFlwLUF1WjlxUk0/view?usp=sharing
>>>>> Also , the catalyst spec is in the accessory  stage3.spec. The portage
>>>>> profiles （/etc/portage）is in the accessory portage.tar.
>>>>>
>>>>>
>>>> And the ppc64le profiles has been pushed to
>>>> https://github.com/linux-on-power/gentoo
>>>>
>>>>
>>>>
>>>>
>>>>>
>>>>> 2015-09-29 19:47 GMT+08:00 Leno Hou <lenohou@×××××.com>:
>>>>>
>>>>>
>>>>>> On Sat, Sep 26, 2015 at 6:58 PM, Anthony G. Basile <
>>>>>> blueness@g.o>
>>>>>> wrote:
>>>>>>
>>>>>> Hi Leno, Kevin and Linda,
>>>>>>>
>>>>>>> Let's start working towards becoming a Gentoo developer.  The first
>>>>>>> step is to read the developer manual and make sure you understand all
>>>>>>> aspects of how Gentoo works.  Even if you don't wind up doing
>>>>>>> everything in
>>>>>>> Gentoo, like writing lots of ebuilds or eclasses, its important to
>>>>>>> have an
>>>>>>> overview.   The developer's manual is at
>>>>>>> https://devmanual.gentoo.org/
>>>>>>> If you have questions, ask.
>>>>>>>
>>>>>>>
>>>>>>> Hi all,
>>>>>>
>>>>>>       Leno, Kevin and Linda will be  OFF on Y2015 China National
>>>>>> Holiday,
>>>>>> from Oct 1 to Oct 11 :-)
>>>>>>
>>>>>>       At this time, we'll read the developer manual and see you next
>>>>>> time, thanks.
>>>>>>
>>>>>> -Leno Hou
>>>>>>
>>>>>>
>>>>>>
>>>>>
>>
>> --
>> Anthony G. Basile, Ph.D.
>> Gentoo Linux Developer [Hardened]
>> E-Mail    : blueness@g.o
>> GnuPG FP  : 1FED FAD9 D82C 52A5 3BAB  DC79 9384 FA6E F52D 4BBA
>> GnuPG ID  : F52D4BBA
>>
>>
>