From mboxrd@z Thu Jan  1 00:00:00 1970
From: Michal Novotny <minovotn@redhat.com>
Subject: Re: Re: Xen-unstable save error
Date: Mon, 21 Jun 2010 15:18:22 +0200
Message-ID: <4C1F669E.4090605@redhat.com>
References: <C84522F0.180EE%keir.fraser@eu.citrix.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=ISO-8859-1; format=flowed
Content-Transfer-Encoding: 7bit
Return-path: <xen-devel-bounces@lists.xensource.com>
In-Reply-To: <C84522F0.180EE%keir.fraser@eu.citrix.com>
List-Unsubscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=unsubscribe>
List-Post: <mailto:xen-devel@lists.xensource.com>
List-Help: <mailto:xen-devel-request@lists.xensource.com?subject=help>
List-Subscribe: <http://lists.xensource.com/mailman/listinfo/xen-devel>,
	<mailto:xen-devel-request@lists.xensource.com?subject=subscribe>
Sender: xen-devel-bounces@lists.xensource.com
Errors-To: xen-devel-bounces@lists.xensource.com
To: Keir Fraser <keir.fraser@eu.citrix.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>
List-Id: xen-devel@lists.xenproject.org

On 06/21/2010 03:08 PM, Keir Fraser wrote:
> On 21/06/2010 13:57, "Michal Novotny"<minovotn@redhat.com>  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@redhat.com>, RHCE
Virtualization Team (xen userspace), Red Hat