[Spacewalk-list] Support for LZMA-compressed comps.xml

[Stephen Herr]

Here you go Tomas:

https://dl.fedoraproject.org/pub/fedora/linux/releases/21/Everything/x86_64/os/repodata/

Take a look at *-comps-f21.xml.xz

-Stephen

On 01/29/2015 06:23 AM, Tomas Lestach wrote:
> Would you share a public repo with lzma compressed comps?
>
> Regards,
> --
> Tomas Lestach
> Red Hat Satellite Engineering, Red Hat
>
>
> ----- Original Message -----
>> From: "Brian Buesker" <bbuesker at qti.qualcomm.com>
>> To: spacewalk-list at redhat.com
>> Sent: Wednesday, January 28, 2015 9:53:48 PM
>> Subject: [Spacewalk-list] Support for LZMA-compressed comps.xml
>>
>>
>> I've started trying to bring online a Fedora 21 distro/kickstart
>> profile against our Spacewalk 2.1 server. Unlike others who have had
>> trouble getting the fedora installer generation to work, it mostly
>> seems to be working for me. I'm not sure if that is because I am
>> using 2.1 instead of 2.2 or if there is some other explanation.
>>
>> However, one thing I ran into is that when I created a Fedora 21
>> Everything channel, Spacewalk ended up not handling the comps.xml
>> properly. In the upstream yum repo, the comps.xml is actually LZMA
>> compressed. It does not look like Spacewalk decompresses this when
>> staging the comps in the local file system. Thus, when a client
>> fetches the repo metadata, it gets a file named comps.xml that is
>> actually compressed and thus it complains about the XML not being
>> well formed.
>>
>> I looked at the Spacewalk git repo and I see that an RPM dependency
>> was added for pyliblzma. I already have that installed on my system,
>> but despite that, Spacewalk still does not handle the compressed
>> comps properly. I dug further into this and found that two python
>> modules need to be updated, namely reposync.py and fileutils.py.
>>
>> I would provide a patch with the fixes, although I have to go through
>> a somewhat lengthy procedure before I can get permission from my
>> employer to release the patch. Therefore, I'll describe the
>> necessary changes in case others want to make the same ones (or even
>> better, get this updated in git).
>>
>>
>>      1. In reposync.py, the list of suffixes in import_groups() needs
>>      to include '.xz'.
>>      2. In fileutils.py, decompress_open() needs to be updated to use
>>      the lzma.LZMAFile() function on files ending in '.xz' (and of
>>      course an import is needed as well).
>>
>>
>> Let me know if you have any questions.
>>
>>
>> Thanks,
>> Brian Buesker
>>
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