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Re: Invalid .treeinfo file causes an exception

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David Robinson wrote:
> Hi all,
> 
> I tried to install a VM from a tree that had an empty .treeinfo file
> (not sure why/how it got there) and got the exception below.
> 
> Traceback (most recent call last):
>   File "/usr/sbin/virt-install", line 780, in <module>
>     main()
>   File "/usr/sbin/virt-install", line 678, in main
>     start_time, guest.start_install)
>   File "/usr/sbin/virt-install", line 733, in do_install
>     dom = install_func(conscb, progresscb, wait=(not wait))
>   File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 539,
> in start_install
>     self._prepare_install(meter)
>   File "/usr/lib/python2.6/site-packages/virtinst/Guest.py", line 594,
> in _prepare_install
>     meter = meter)
>   File "/usr/lib/python2.6/site-packages/virtinst/DistroInstaller.py",
> line 233, in prepare
>     self._prepare_kernel_and_initrd(guest, distro, meter)
>   File "/usr/lib/python2.6/site-packages/virtinst/DistroInstaller.py",
> line 182, in _prepare_kernel_and_initrd
>     type=self.os_type, distro=distro)
>   File "/usr/lib/python2.6/site-packages/virtinst/OSDistro.py", line
> 133, in acquireKernel
>     scratchdir, type, distro)
>   File "/usr/lib/python2.6/site-packages/virtinst/OSDistro.py", line
> 114, in _acquireMedia
>     scratchdir=scratchdir, arch=arch)
>   File "/usr/lib/python2.6/site-packages/virtinst/OSDistro.py", line
> 60, in _storeForDistro
>     arch, typ, scratchdir)
>   File "/usr/lib/python2.6/site-packages/virtinst/OSDistro.py", line
> 163, in distroFromTreeinfo
>     fam = treeinfo.get("general", "family")
>   File "/usr/lib64/python2.6/ConfigParser.py", line 531, in get
>     raise NoSectionError(section)
> NoSectionError: No section: 'general'
> 
> Removing the file fixed the problem, but the patch below (hasn't been
> tested) would also fix it.
> 
> --- /usr/lib/python2.6/site-packages/virtinst/OSDistro.py.orig	2009-06-26
> 13:45:30.109607052 +0100
> +++ /usr/lib/python2.6/site-packages/virtinst/OSDistro.py	2009-06-26
> 13:47:58.655642976 +0100
> @@ -160,7 +160,10 @@
>      finally:
>          os.unlink(tmptreeinfo)
> 
> -    fam = treeinfo.get("general", "family")
> +    try:
> +        fam = treeinfo.get("general", "family")
> +    except NoSectionError:
> +        return None
> 
>      if re.match(".*Fedora.*", fam):
>          dclass = FedoraDistro
> 
> # rpm -qf /usr/lib/python2.6/site-packages/virtinst/OSDistro.py
> python-virtinst-0.400.3-8.fc11.noarch
> 
> --Dave
> 

Thanks for the report! Pushed now:

http://hg.et.redhat.com/cgi-bin/hg-virt.cgi/applications/virtinst--devel/rev/bb8d3a5bb858

- Cole

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