Xen devel - May 2010 - lzma and 4.0 and "Internal errror'', ''xc_dom_do_gunzip: inflate failed (rc=-5)"

I''m trying to load a PV domain with a kernel for which
the initramfs (but not the kernel) is compressed with
lzma, running a recent xen-4.0-testing and got:

"''Internal error'', ''xc_dom_do_gunzip: inflate
failed (rc=-5)''"

I discovered that, although the 4.0 wiki says that xz-devel
is required to be installed, the dependency checking tools
don''t enforce it and the build silently ignores it if it
is missing.  So I installed the xz rpm''s, did a make clean
in tools, then make and make install.  Still same problem.

I''ve checked to ensure that /usr/bin/pygrub and
/usr/lib/libxenguest.so are getting new bits and,
yes, I''ve shut down and restarted xend.

Any ideas of what else I might be doing wrong? 

_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

On Mon, May 10, 2010 at 11:15:18AM -0700, Dan Magenheimer
wrote:
> I''m trying to load a PV domain with a kernel for which
> the initramfs (but not the kernel) is compressed with
> lzma, running a recent xen-4.0-testing and got:
> 
> "''Internal error'', ''xc_dom_do_gunzip:
inflate failed (rc=-5)''"
> 
> I discovered that, although the 4.0 wiki says that xz-devel
> is required to be installed, the dependency checking tools
> don''t enforce it and the build silently ignores it if it
> is missing.  So I installed the xz rpm''s, did a make clean
> in tools, then make and make install.  Still same problem.
> 
> I''ve checked to ensure that /usr/bin/pygrub and
> /usr/lib/libxenguest.so are getting new bits and,
> yes, I''ve shut down and restarted xend.
> 
> Any ideas of what else I might be doing wrong? 
>
Hmm.. you could use ldd to check if libxenguest.so is linked against libxz?
Also there might be some debug messages in /var/log/xen/* 

-- Pasi


_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

On 10/05/2010 19:15, "Dan Magenheimer"
<dan.magenheimer@oracle.com> wrote:
> I''m trying to load a PV domain with a kernel for which
> the initramfs (but not the kernel) is compressed with
> lzma, running a recent xen-4.0-testing and got:
> 
> "''Internal error'', ''xc_dom_do_gunzip:
inflate failed (rc=-5)''"
> 
> I discovered that, although the 4.0 wiki says that xz-devel
> is required to be installed, the dependency checking tools
> don''t enforce it and the build silently ignores it if it
> is missing.  So I installed the xz rpm''s, did a make clean
> in tools, then make and make install.  Still same problem.
Did xc_dom_bzimageloader.o really get built with -DHAVE_LZMA in CFLAGS? If
so then LZMA support should be built in and it should be possible to inflate
the initrd. You''ll have to add extra tracing in that case to find out
where
the error is coming from.

 -- Keir



_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel

Thanks for the quick replies...
> Hmm.. you could use ldd to check if libxenguest.so is linked against
> libxz?
Assuming you meant "linked against" liblzma, yes it is.
> Also there might be some debug messages in /var/log/xen/*
No, nothing unusual.  The inflate just seems to fail with -5
(which I think means Z_BUF_ERROR).
> Did xc_dom_bzimageloader.o really get built with -DHAVE_LZMA in CFLAGS?
Yep, checked with "strings".
> so then LZMA support should be built in and it should be possible to
> inflate
> the initrd. You''ll have to add extra tracing in that case to find
out
> where
> the error is coming from.
Looks like debugging time... will followup if/when I find anything out.
> -----Original Message-----
> From: Keir Fraser [mailto:keir.fraser@eu.citrix.com]
> Sent: Monday, May 10, 2010 12:38 PM
> To: Dan Magenheimer; Pasi Kärkkäinen; xen-devel@lists.xensource.com
> Subject: Re: [Xen-devel] lzma and 4.0 and "Internal errror'',
> ''xc_dom_do_gunzip: inflate failed (rc=-5)"
> 
> On 10/05/2010 19:15, "Dan Magenheimer"
<dan.magenheimer@oracle.com>
> wrote:
> 
> > I''m trying to load a PV domain with a kernel for which
> > the initramfs (but not the kernel) is compressed with
> > lzma, running a recent xen-4.0-testing and got:
> >
> > "''Internal error'', ''xc_dom_do_gunzip:
inflate failed (rc=-5)''"
> >
> > I discovered that, although the 4.0 wiki says that xz-devel
> > is required to be installed, the dependency checking tools
> > don''t enforce it and the build silently ignores it if it
> > is missing.  So I installed the xz rpm''s, did a make clean
> > in tools, then make and make install.  Still same problem.
> 
> Did xc_dom_bzimageloader.o really get built with -DHAVE_LZMA in CFLAGS?
> If
> so then LZMA support should be built in and it should be possible to
> inflate
> the initrd. You''ll have to add extra tracing in that case to find
out
> where
> the error is coming from.
> 
>  -- Keir
> 
> 
_______________________________________________
Xen-devel mailing list
Xen-devel@lists.xensource.com
http://lists.xensource.com/xen-devel