Re: [Xen-devel] Re: Xen-unstable save error

[Michal Novotny <minovotn@xxxxxxxxxx>]

On 06/21/2010 03:08 PM, Keir Fraser wrote:
> On 21/06/2010 13:57, "Michal Novotny"<minovotn@xxxxxxxxxx>  wrote:
>
>    
> > Well, those are objdumps:
> >
> > $ objdump -x /xen-unstable.hg/tools/xcutils/xc_save | grep xs_sus
> > 0000000000000000       F *UND*  00000000000000ad
> > xs_suspend_evtchn_port
> > $ objdump -x /usr/lib64/xen/bin/xc_save | grep xs_suspend
> > 0000000000000000       F *UND*  00000000000000ad
> > xs_suspend_evtchn_port
> > $ ls -al /usr/lib64/libxenctrl.so
> > lrwxrwxrwx 1 root root 17 Jun 21 13:52 /usr/lib64/libxenctrl.so ->
> > libxenctrl.so.4.0
> >
> > I was having some libxenctrl* files at /lib64 so I removed them in order
> > to make linked link those from /usr/lib64 so it did. However, the error
> > now is:
> >      
> Well what was the above supposed to achieve? xs_suspend_evtchn_port is
> provided by libxenstore. It's that library which is getting mis-linked.
> Moving the xc_save binary itself, and/or libxenctrl, isn't going to change
> that. Go use ldd to find what libxenstore is being linked against; work out
> why it's the wrong one; put the right one in its place.
>
>   -- Keir
>
>
>    
Well, I was trying to show that the version that's being linked it the 
4.0 version and not 3.4 or older one.
Also,
# ldd /usr/lib64/libxenctrl.so
        linux-vdso.so.1 =>  (0x00007fff275ff000)
        libpthread.so.0 => /lib64/libpthread.so.0 (0x000000391ec00000)
        libc.so.6 => /lib64/libc.so.6 (0x000000391e000000)
        /lib64/ld-linux-x86-64.so.2 (0x000000391dc00000)
# objdump -x /usr/lib64/libxenctrl.so | grep xs_
#

So there's no xs_suspend_evtchn_port (or anything xs_*) function being 
exported by /usr/lib64/libxenctrl.so (which is the symlink to 
/usr/lib64/libxenctrl.so.4.0.0), therefore:
#objdump -x /usr/lib64/libxenctrl.so.4.0.0 | grep xs_
#objdump -x /xen-unstable.hg/tools/libxc/libxenctrl.so.4.0.0  | grep xs_
#

So the problem here is the missing xs_*.

Note: /xen-unstable.hg/* is the path with Xen-4.1-unstable source codes 
downloaded from Mercurial and compiled.
Michal

--
Michal Novotny<minovotn@xxxxxxxxxx>, RHCE
Virtualization Team (xen userspace), Red Hat


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