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

[Tomas Lestach]

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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