[CentOS-devel] Question about generating a spin of CentOS 7

Steven Falco

sfalco at imaginecommunications.com
Fri Oct 31 18:29:01 UTC 2014


On 10/31/2014 10:10 AM, Fabian Arrotin wrote:
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>>>>> This thread has taken an interesting turn, but I'd like to
>>>>> try to bring it back to my original question:
>>>>>
>>>>> How can I build a variation on the official DVD, including 
>>>>> generating the embedded LiveOS image; i.e., the rootfs.img
>>>>> file?
>>
>> Well, I haven't read the whole requirements list you probably 
>> described earlier, but have you already had a look at lorax ? It
>> was written for such particular case normally : 
>> https://access.redhat.com/documentation/en-US/Red_Hat_Enterprise_Linux/7/html/Installation_Guide/sect-disk-image-installation-automatic.html
>>
>>> Thank you!  I will give that procedure a try and report my 
>>> results.

I've tried the above procedure, and can confirm that it built
a good iso file, using the RedHat minimal ks as input.  The
resulting iso booted properly on VirtualBox.

In a completely separate experiment, I was able to use pungi
(rebuilt from the Fedora 20 SRPM) to generate an installation
disk.

The only issue I ran into in that experiment was that I needed
to first build and install a custom kernel with HFS+ support,
because the Fedora 20 version of pungi apparently needs HFS+ to
create the EFI boot mechanism on the DVD.

>>> Can you confirm whether this is the procedure used by the 
>>> official CentOS build scripts?
> 
> No, I don't think so, as one has to buid the vmlinuz/initrd.img and
> other bits before being able to respin such variant .. but that's not
> what you asked for iirc :-)

Ok - understood.  If at some point in the future the official
build tools can be made available (read-only of course), I'd
still be interested in seeing them, and in helping to document
them, but for now, I have a path to build what I need.

	Thanks,
	Steve

> 
> - -- 
> 
> Fabian Arrotin
> The CentOS Project | http://www.centos.org
> gpg key: 56BEC54E | twitter: @arrfab
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