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Re: [Libosinfo] [PATCH] fedora: Adjust initrd/kernel paths to real file



On Thu, May 29, 2014 at 6:44 PM, Lasse Schuirmann
<lasse schuirmann gmail com> wrote:
> 2014-05-29 19:37 GMT+02:00 Zeeshan Ali (Khattak) <zeeshanak gnome org>:
>> On Thu, May 29, 2014 at 4:44 PM, Lasse Schuirmann
>> <lasse schuirmann gmail com> wrote:
>>> This makes archive handling a bit easier for people using libarchive
>>> since they don't need to support hardlinks in archives which is
>>> complicated. (E.g. gnomes file-roller and KDEs Ark do not support
>>> hardlinks, there are probably more implementations that don't.)
>>
>> Looks good otherwise. Two comments below:
>>
>>> (Note that the file bodies lie on different locations in the
>>> 32bit/64bit isos. I have checked both isos, this is intentionally.)
>>
>> Didn't quite understand that.
>>
>>> >From 5d4d60aa9d1981ac9b1896228df7fe57cd54559f Mon Sep 17 00:00:00 2001
>>> From: Lasse Schuirmann <lasse schuirmann gmail com>
>>> Date: Thu, 29 May 2014 17:31:48 +0200
>>> Subject: [PATCH] fedora: Adjust initrd/kernel paths to real file
>>>
>>> The new paths point to the archive entries containing also the body of
>>> the file. The other entries are just hardlinks.
>>> ---
>>>  data/oses/fedora.xml.in | 6 +++---
>>>  1 file changed, 3 insertions(+), 3 deletions(-)
>>>
>>> diff --git a/data/oses/fedora.xml.in b/data/oses/fedora.xml.in
>>> index 27cdd4a..f33fdb0 100644
>>> --- a/data/oses/fedora.xml.in
>>> +++ b/data/oses/fedora.xml.in
>>> @@ -1469,8 +1469,8 @@
>>>          <volume-id>Fedora 20.* i386</volume-id>
>>>          <system-id>LINUX</system-id>
>>>        </iso>
>>> -      <kernel>isolinux/vmlinuz</kernel>
>>> -      <initrd>isolinux/initrd.img</initrd>
>>> +      <kernel>images/pxeboot/vmlinuz</kernel>
>>> +      <initrd>images/pxeboot/initrd.img</initrd>
>>>      </media>
>>>      <media arch="x86_64">
>>>        <url>http://download.fedoraproject.org/pub/fedora/linux/releases/20/Fedora/x86_64/iso/Fedora-20-x86_64-DVD.iso</url>
>>> @@ -1479,7 +1479,7 @@
>>>          <system-id>LINUX</system-id>
>>>        </iso>
>>>        <kernel>isolinux/vmlinuz</kernel>
>>
>> Forgot this one?
> No, this is what you didn't understand above.
>
> Let me rephrase:
>
> The kernel paths are intentionally different in the two isos.
>
> If you look in the isos, you'll see that in the 32 bit iso:
> - isolinux/vmlinuz is a hardlink to images/pxeboot/vmlinux
> - isolinux/initrd.img is a hardlink to images/pxeboot/initrd.img
>
> In the 64 bit iso:
> - /images/pxeboot/vmlinux is a hardlink to isolinux/vmlinuz
> - isolinux/initrd.img is a hardlink to images/pxeboot/initrd.img
>
> What is the hardlink and what is the "real file" is determined during
> the compression process nondeterministically. (To be exact the first
> occurrence will be the "real" file [entry + body] and the following
> will be only the entries without body in this archive format IIRC.)
> That is the reason while the paths of the 32 bit iso and the 64 bit
> iso differ.

Thanks so much for explaining in detail. Could you please update the
log to explain better so idiots like me can't get confused? :)


-- 
Regards,

Zeeshan Ali (Khattak)
________________________________________
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