Libguestfs - Jan 2014 - Re: [virt-builder] symbol lookup error: /lib64/libgnutls.so.28 - undefined symbol: nettle_secp_256r1

Running virt-builder in a guest Fedora-20 guest hypervisor w/ Rawhide
Kernel, throws the below:

  $ virt-builder fedora-20 --format qcow2 --size 20G
  virt-builder: symbol lookup error: /lib64/libgnutls.so.28: undefined
symbol: nettle_secp_256r1


Version on L1 (guest hypervisor)
--------------------------------

  $ uname -r; rpm -q libvirt-daemon-kvm  qemu-system-x86 \
    libguestfs gnutls
  3.14.0-0.rc0.git9.1.fc21.x86_64
  libvirt-daemon-kvm-1.2.1-1.fc21.x86_64
  qemu-system-x86-1.7.0-4.fc21.x86_64
  libguestfs-1.25.29-1.fc21.x86_64
  gnutls-3.2.8-1.fc21.x86_64


And, that's the latest gnutls available on Fedora Rawhide:

  $ koji latest-build rawhide gnutls | awk '{print $1}'
  Build
  ----------------------------------------
  gnutls-3.2.8-1.fc21


Version on L0 (Bare metal)
--------------------------

  $ uname -r; rpm -q libvirt-daemon-kvm  qemu-system-x86 \
    libguestfs
  3.12.8-300.fc20.x86_64
  libvirt-daemon-kvm-1.2.1-1.fc21.x86_64
  qemu-system-x86-1.7.0-4.fc21.x86_64
  libguestfs-1.25.29-1.fc21.x86_64



-- 
/kashyap

On 01/27/2014 11:06 AM, Kashyap Chamarthy wrote:
> Running virt-builder in a guest Fedora-20 guest hypervisor w/ Rawhide
> Kernel, throws the below:
> 
>   $ virt-builder fedora-20 --format qcow2 --size 20G
>   virt-builder: symbol lookup error: /lib64/libgnutls.so.28: undefined
> symbol: nettle_secp_256r1
> 
> 
> Version on L1 (guest hypervisor)
> --------------------------------
> 
>   $ uname -r; rpm -q libvirt-daemon-kvm  qemu-system-x86 \
>     libguestfs gnutls
>   3.14.0-0.rc0.git9.1.fc21.x86_64
>   libvirt-daemon-kvm-1.2.1-1.fc21.x86_64
>   qemu-system-x86-1.7.0-4.fc21.x86_64
>   libguestfs-1.25.29-1.fc21.x86_64
>   gnutls-3.2.8-1.fc21.x86_64
> 
> 
> And, that's the latest gnutls available on Fedora Rawhide:
> 
>   $ koji latest-build rawhide gnutls | awk '{print $1}'
>   Build
>   ----------------------------------------
>   gnutls-3.2.8-1.fc21
> 
> 
> Version on L0 (Bare metal)
> --------------------------
> 
>   $ uname -r; rpm -q libvirt-daemon-kvm  qemu-system-x86 \
>     libguestfs
>   3.12.8-300.fc20.x86_64
>   libvirt-daemon-kvm-1.2.1-1.fc21.x86_64
>   qemu-system-x86-1.7.0-4.fc21.x86_64
>   libguestfs-1.25.29-1.fc21.x86_64
I should note that the very guest (L1) I was trying to run virt-builder
on, was created using virt-builder on L0. Only difference I see -- L0 is
running F20 Kernel - 3.12.8-300.fc20.x86_64, while L1 is running the
latest (3.14.0-0.rc0.git9.1.fc21) from current Rawhide.

-- 
/kashyap

On 01/27/2014 11:34 AM, Kashyap Chamarthy wrote:
> On 01/27/2014 11:06 AM, Kashyap Chamarthy wrote:
>> Running virt-builder in a guest Fedora-20 guest hypervisor w/ Rawhide
>> Kernel, throws the below:
>>
>>   $ virt-builder fedora-20 --format qcow2 --size 20G
>>   virt-builder: symbol lookup error: /lib64/libgnutls.so.28: undefined
>> symbol: nettle_secp_256r1
>>
>>
>> Version on L1 (guest hypervisor)
>> --------------------------------
>>
>>   $ uname -r; rpm -q libvirt-daemon-kvm  qemu-system-x86 \
>>     libguestfs gnutls
>>   3.14.0-0.rc0.git9.1.fc21.x86_64
>>   libvirt-daemon-kvm-1.2.1-1.fc21.x86_64
>>   qemu-system-x86-1.7.0-4.fc21.x86_64
>>   libguestfs-1.25.29-1.fc21.x86_64
>>   gnutls-3.2.8-1.fc21.x86_64
>>
>>
>> And, that's the latest gnutls available on Fedora Rawhide:
>>
>>   $ koji latest-build rawhide gnutls | awk '{print $1}'
>>   Build
>>   ----------------------------------------
>>   gnutls-3.2.8-1.fc21
>>
>>
>> Version on L0 (Bare metal)
>> --------------------------
>>
>>   $ uname -r; rpm -q libvirt-daemon-kvm  qemu-system-x86 \
>>     libguestfs
>>   3.12.8-300.fc20.x86_64
>>   libvirt-daemon-kvm-1.2.1-1.fc21.x86_64
>>   qemu-system-x86-1.7.0-4.fc21.x86_64
>>   libguestfs-1.25.29-1.fc21.x86_64
> 
> I should note that the very guest (L1) I was trying to run virt-builder
> on, was created using virt-builder on L0. Only difference I see -- L0 is
> running F20 Kernel - 3.12.8-300.fc20.x86_64, while L1 is running the
> latest (3.14.0-0.rc0.git9.1.fc21) from current Rawhide.
Ok, w/ L0 & L1 both at 3.12.8-300.fc20.x86_64, I still see the same
undefined --  undefined symbol: nettle_secp_256r1

I could independently confirm this by running virt-install on L1:

[. . .]
Traceback (most recent call last):
  File "/usr/share/virt-manager/virt-install", line 31, in
<module>
    import libvirt
  File "/usr/lib64/python2.7/site-packages/libvirt.py", line 28, in
<module>
    raise lib_e
ImportError: /lib64/libgnutls.so.28: undefined symbol: nettle_secp_256r1
[. . .]


I wonder, is this probably because, I'm mixing versions?

Version
-------

  $ rpm -q virt-install
  virt-install-0.10.0-5.git1ffcc0cc.fc21.noarch




-- 
/kashyap

On Monday 27 January 2014 11:06:14 Kashyap Chamarthy
wrote:
> Running virt-builder in a guest Fedora-20 guest hypervisor w/ Rawhide
> Kernel, throws the below:
> 
>   $ virt-builder fedora-20 --format qcow2 --size 20G
>   virt-builder: symbol lookup error: /lib64/libgnutls.so.28: undefined
> symbol: nettle_secp_256r1
A couple of ideas:
1) libgnutls has been upgraded and it uses newer symbols from libnettle
   without a proper versioned dependency on it
2) libnettle has been upgraded, removing symbols used by libgnutls (that
   would be an ABI break)

So either there was an ABI break, or there's a too low dependency in 
those two packages.

-- 
Pino Toscano

On Mon, Jan 27, 2014 at 10:27:20AM +0100, Pino Toscano
wrote:
> On Monday 27 January 2014 11:06:14 Kashyap Chamarthy wrote:
> > Running virt-builder in a guest Fedora-20 guest hypervisor w/ Rawhide
> > Kernel, throws the below:
> > 
> >   $ virt-builder fedora-20 --format qcow2 --size 20G
> >   virt-builder: symbol lookup error: /lib64/libgnutls.so.28: undefined
> > symbol: nettle_secp_256r1
> 
> A couple of ideas:
> 1) libgnutls has been upgraded and it uses newer symbols from libnettle
>    without a proper versioned dependency on it
> 2) libnettle has been upgraded, removing symbols used by libgnutls (that
>    would be an ABI break)
> 
> So either there was an ABI break, or there's a too low dependency in 
> those two packages.
This would be my guess too.  I'll see if I can reproduce this in
Rawhide ...

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
virt-df lists disk usage of guests without needing to install any
software inside the virtual machine.  Supports Linux and Windows.
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