Re: [gentoo-releng] Re: Seek for your advices : Make Gentoo LiveCD for ppc64le

[Anthony G. Basile]

On 12/7/15 3:39 AM, Kevin Zhao wrote:
> Hi All :

Hi Kevin,

First let me say I haven't heard back from osuosl so I need to bug them
about our node!

>      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.

This sounds correct, but I don't build my bootable isos with catalyst. 
I do it the manual way or using GRS.

>
>     Now when loading iso to a guests, I can enter into grub, but have meet
>  problem when initramfs runs:* Couldn't mount /dev/sr0*

if you can get to the shell take a look what's in /dev.  you may need to
tweak the kernel.  i don't think this is due to the above.  to get to
the shell, when you get to the point where it says that it can't mount
/dev/sr0, it says do you want to drop to a shell, type "shell" and youll
get a very basic ash shell.

let me know, or i can take a look at the image for you.

>
> 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 13:26 GMT+08:00 Kevin Zhao <kevin.zhaoshuai@×××××.com>:
>
>> Hi  Mike && Hi Folks,
>>       First I want to thanks for your help and advices , we have finish
>> make gentoo stage3 and it will be tests by our community.
>>       Now I  am working for  gentoo LiveCD using stage3 .   After
>> searching gentoo website, I can not find a very clearly method to make
>> gentoo LiveCD .
>>       So ,if conveniently , could you give me some advices or some
>> websites which cover the methods to LiveCD of other arch(e.g : x86 ,amd64
>> etc..)
>>       Thanks very much ~   :-)
>>


-- 
Anthony G. Basile, Ph.D.
Gentoo Linux Developer [Hardened]
E-Mail    : blueness@g.o
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