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<pre>Hi Shi,
thank you again for the help, you are very kind.
I created a bridged network on my Ethernet card following the libvirt documentation
<a class="moz-txt-link-freetext" href="http://wiki.libvirt.org/page/Networking#Bridged_networking_.28aka_.22shared_physical_device.22.29">http://wiki.libvirt.org/page/Networking#Bridged_networking_.28aka_.22shared_physical_device.22.29</a>
oneadmin@omii001$ brctl show
bridge name bridge id STP enabled interfaces
br0 8000.0015c5edbf17 no eth0
virbr0 8000.000000000000 yes
Setting ifcfg-eth0 and ifcfg-br0 in this way:
oneadmin@omii001$ cat ifcfg-eth0
# Broadcom Corporation NetXtreme II BCM5708 Gigabit Ethernet
DEVICE=eth0
BOOTPROTO=static
DHCPCLASS=
HWADDR=00:15:C5:ED:BF:17
IPADDR=131.154.100.175
NETMASK=255.255.255.0
ONBOOT=yes
BRIDGE=br0
oneadmin@omii001$ cat ifcfg-br0
DEVICE=br0
TYPE=Bridge
BOOTPROTO=dhcp
ONBOOT=yes
DELAY=0
but I have still the same problem.. (I set higher verbosity in libvirt)
Some other suggests?
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 Command execution fail: 'cat > /srv/cloud/one/var/22/images/deployment.0 && virsh create /srv/cloud/one/var/22/images/deployment.0'
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 STDERR follows.
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 18:13:42.689: error : No vport operation path found for host1
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 18:13:42.706: error : No vport operation path found for host0
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 18:13:42.728: error : No vport operation path found for host2
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 18:13:42.783: warning : Cannot set group when not running as root
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 18:13:42.979: info : Received unexpected signal 17
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 18:13:42.979: error : internal error Failed to add tap interface 'vnet%d' to bridge 'eth0' : Permission denied
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 libvir: QEMU error : internal error Failed to add tap interface 'vnet%d' to bridge 'eth0' : Permission denied
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 error: Failed to create domain from /srv/cloud/one/var/22/images/deployment.0
Wed Nov 18 18:14:05 2009 [VMM][D]: Message received: LOG - 22 error: internal error Failed to add tap interface 'vnet%d' to bridge 'eth0' : Permission denied
regards,
Gianni.
Shi Jin ha scritto:</pre>
<blockquote
cite="mid:873c169b0911180740l32e6a0by35323fd9dc83c78a@mail.gmail.com"
type="cite">
<pre wrap="">I think this is your problem: you can either simply use virbr0 as the
bridged device, which only gives you a NATed virtual network.
Or you can create a bridged network on your real ethernet card such as
eth0, for example call it br0. Then use br0 in your template.
Shi
On Wed, Nov 18, 2009 at 8:36 AM, Gianni Dalla Torre
<a class="moz-txt-link-rfc2396E" href="mailto:gianni.dallatorre@cnaf.infn.it"><gianni.dallatorre@cnaf.infn.it></a> wrote:
</pre>
<blockquote type="cite">
<pre wrap="">Hi Shi,
oneadmin@omii001$ brctl show
bridge name bridge id STP enabled interfaces
virbr0 8000.000000000000 yes
Gianni
Shi Jin ha scritto:
Hi Gianni,
What does "brctl show" return on your hosts?
Shi
On Wed, Nov 18, 2009 at 3:05 AM, Gianni Dalla Torre
<a class="moz-txt-link-rfc2396E" href="mailto:gianni.dallatorre@cnaf.infn.it"><gianni.dallatorre@cnaf.infn.it></a> wrote:
Hi Shi,
I changed the name of the Ethernet device inside of the configuration file
as you suggest, using br0 instead of eth0, but it didn't help.
Now, I have a doubt:
if I use the hook scripts (the ones in one/share/hooks/ in the last
opennebula release) (as actually I'm trying to do)
have I to set-up a bridged network? I mean more than what is written here
<a class="moz-txt-link-freetext" href="http://www.opennebula.org/doku.php?id=documentation:rel1.4:nm">http://www.opennebula.org/doku.php?id=documentation:rel1.4:nm</a>
or I have only to change some of the setups, that I have already done
following the guide? I wouldn't interferer with the scripts changing the
network topology.
Many tanks,
Gianni.
Shi wrote:
My pleasure.
I think the problem is that you have to setup brdiged network on the
host properlly.
Instead of using eth0 as the network device in the VM, you should use br0.
You can google how to setup bridged network for virtualization for
your Linux distribution.
Hope this helps.
Shi
On Tue, Nov 17, 2009 at 7:23 AM, Gianni Dalla Torre
<a class="moz-txt-link-rfc2396E" href="mailto:gianni.dallatorre@cnaf.infn.it"><gianni.dallatorre@cnaf.infn.it></a> wrote:
Thank you Fernando for the information,
Anyway I forget to say I have already changed that lines.
Gianni.
Fernando. wrote:
Hi,
I would try to add/uncomment the following lines in the file
/etc/libvirt/libvirtd.conf:
auth_unix_ro = "none"
auth_unix_rw = "none"
Why? I had to do it in my Fedora 11, and I think you are using Scientific
Linux, which must be similar to Fedora.
Hope this helps.
Fernando.
Hi Shi,
I followed your advice and created a symbolic link to /usr/bin/kvm
--oneadmin@omii001$ ln -s /usr/libexec/qemu-kvm /usr/bin/kvm
So I was able to solve that problem, thank you very much.
Anyway now I have another issue when I try do deploy my VM:
libvir: QEMU error :internal error Failed to add tap interface 'vnet%d' to
bridge 'eth0' : Permission denied
This are the settings on omii001 host that I should be related with the
issue:
--oneadmin@omii001$ id root
uid=0(root) gid=0(root)
groups=0(root),1(bin),2(daemon),3(sys),4(adm),6(disk),10(wheel),127(libvirtd),36(kvm)
--oneadmin@omii001$ id oneadmin
uid=1002(oneadmin) gid=1003(cloud) groups=1003(cloud),127(libvirtd),36(kvm)
--oneadmin@omii001$ cat /etc/group
libvirtd:x:127:root,oneadmin,cloud
cloud:x:1003:
kvm:x:36:root,oneadmin,cloud
--oneadmin@omii001$ ls -la /var/run/libvirt/
total 20
drwxr-xr-x 4 root root 4096 Nov 17 13:12 .
drwxr-xr-x 16 root root 4096 Nov 17 14:32 ..
srwxrwx--- 1 root libvirtd 0 Nov 17 13:12 libvirt-sock
srwxrwxrwx 1 root libvirtd 0 Nov 17 13:12 libvirt-sock-ro
drwxr-xr-x 2 root root 4096 Nov 17 13:12 network
drwxr-xr-x 2 root root 4096 Sep 11 21:38 qemu
--oneadmin@omii001$ cat /etc/libvirt/libvirtd.conf
unix_sock_rw_perms = "0770"
unix_sock_group = "libvirtd"
I am not sure virsh is connecting in the right way, in fact if try "virsh -c
qemu:///system list" in the omii001 host
I obtain a different output to the one from another host (that actually
works), maybe have I to set the connection uri?
--oneadmin@omii001$virsh -c qemu:///system list
Id Name State
----------------------------------
--oneadmin@ivanoc$virsh -c qemu:///system list
Connecting to uri: qemu:///system
Id Name State
----------------------------------
The oned.log related to VM creation and deployment:
Tue Nov 17 13:18:13 2009 [TM][D]: Message received: TRANSFER SUCCESS 15 -
Tue Nov 17 13:18:19 2009 [InM][I]: Monitoring host omii001 (4)
Tue Nov 17 13:18:25 2009 [InM][D]: Host 4 successfully monitored.
Tue Nov 17 13:18:46 2009 [VMM][I]: --Mark--
Tue Nov 17 13:18:49 2009 [InM][I]: --Mark--
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 Command
execution fail: 'cat > /srv/cloud/one/var/15/images/deployment.0 && virsh
create /srv/cloud/one/var/15/images/deployment.0'
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 STDERR
follows.
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 13:18:53.525:
error : No vport operation path found for host1
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 13:18:53.539:
error : No vport operation path found for host0
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 13:18:53.561:
error : No vport operation path found for host2
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 13:18:54.182:
error : internal error Failed to add tap interface 'vnet%d' to bridge 'eth0'
: Permission denied
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 libvir: QEMU
error : internal error Failed to add tap interface 'vnet%d' to bridge 'eth0'
: Permission denied
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 error: Failed
to create domain from /srv/cloud/one/var/15/images/deployment.0
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 error:
internal error Failed to add tap interface 'vnet%d' to bridge 'eth0' :
Permission denied
Tue Nov 17 13:18:52 2009 [VMM][D]: Message received: LOG - 15 ExitCode: 1
Thank you in advance for your time.
Best regards,
Gianni
Shi Jin ha wrote
Maybe kvm is not located at /usr/bin/kvm in your host distribution?
A quick and dirty way might be to create a symbolic link. Not sure if
it would help.
Shi
On Fri, Nov 13, 2009 at 10:48 AM, Gianni Dalla Torre
<a class="moz-txt-link-rfc2396E" href="mailto:gianni.dallatorre@cnaf.infn.it"><gianni.dallatorre@cnaf.infn.it></a> wrote:
Hi all,
I configured an OpenNebula (v 1.3.80) front-end in my pc "solaris" (Ubuntu
9.04) and installed a cluster node "omii001" (Scientific Linux CERN SLC
release 2.6.18-164.6.1.el5 x86_64).
I need to access my VM through ssh, so I used the Bridged networking
("shared physical device") following this instructions:
<a class="moz-txt-link-freetext" href="http://www.opennebula.org/doku.php?id=documentation:rel1.4:nm">http://www.opennebula.org/doku.php?id=documentation:rel1.4:nm</a>
And I used the kvm-hook-script taken from v. 1.3.85
When I try do deploy my VM I have a failure.
from the log file seems that I have a problem with KVM configuration:
"Cannot find QEMU binary /usr/bin/kvm: No such file or directory"
I'm not sure my kvm installation was done properly, so maybe is my fault..
anyway I follow the steps in the documentation and I can't find a
solution.
Here some information about my configuration:
I should have the kvm module loaded on my node:
oneadmin@omii001$/sbin/lsmod | grep kvm
kvm_intel 86248 0
kvm 223264 2 ksm,kvm_intel
But I have no kvm service running... (Is that my problem?)
oneadmin@omii001$ chkconfig --list | grep kvm
oneadmin@omii001$ chkconfig --list | grep libvirtd
libvirtd 0:off 1:off 2:off 3:on 4:on 5:on 6:off
oneadmin@omii001$ chkconfig --list | grep qemu
qemu 0:off 1:off 2:on 3:on 4:on 5:on 6:off
oneadmin@solaris:/home/giannidallatorre$ onevm show two
VIRTUAL MACHINE 7 INFORMATION
ID : 7
NAME : two
STATE : FAILED
LCM_STATE : LCM_INIT
START TIME : 11/13 17:30:07
END TIME : 11/13 17:36:28
DEPLOY ID: :
VIRTUAL MACHINE TEMPLATE
CPU=1
DISK=[
READONLY=no,
SOURCE=/srv/cloud/one/images/debian5.img,
TARGET=vda ]
GRAPHICS=[
LISTEN=127.0.0.1,
PORT=1,
TYPE=vnc ]
MEMORY=512
NAME=two
NIC=[
BRIDGE=eth0,
IP=131.154.101.250,
MAC=00:03:83:9a:65:fa,
NETWORK=PublicVLAN,
VNID=2 ]
OS=[
BOOT=hd ]
SAVE=yes
VMID=7
oneadmin@solaris:/home/giannidallatorre$ onevnet list
NID USER NAME TYPE BRIDGE #LEASES
2 oneadmin PublicVLAN Fixed eth0 1
oneadmin@solaris:/home/giannidallatorre$ onevnet show 2
VIRTUAL NETWORK 2 INFORMATION
ID: : 2
UID: : 0
VIRTUAL NETWORK TEMPLATE
BRIDGE=eth0
LEASES=[ IP=131.154.101.250 ]
LEASES=[ IP=131.154.101.251 ]
LEASES=[ IP=131.154.101.252 ]
NAME=PublicVLAN
TYPE=FIXED
LEASES INFORMATION
LEASE=[ IP=131.154.101.250, MAC=00:03:83:9a:65:fa, USED=1, VID=7 ]
LEASE=[ IP=131.154.101.251, MAC=00:03:83:9a:65:fb, USED=0, VID=-1 ]
LEASE=[ IP=131.154.101.252, MAC=00:03:83:9a:65:fc, USED=0, VID=-1 ]
This is the oned.log file:
Fri Nov 13 17:29:52 2009 [ONE][I]: Init OpenNebula Log system
Fri Nov 13 17:29:52 2009 [ONE][I]: Log Level: 3
[0=ERROR,1=WARNING,2=INFO,3=DEBUG]
Fri Nov 13 17:29:52 2009 [ONE][I]:
----------------------------------------------
Fri Nov 13 17:29:52 2009 [ONE][I]: OpenNebula Configuration File
Fri Nov 13 17:29:52 2009 [ONE][I]:
----------------------------------------------
Fri Nov 13 17:29:52 2009 [ONE][I]:
--------------------------------------------
DEBUG_LEVEL=3
HM_MAD=EXECUTABLE=one_hm
HOST_MONITORING_INTERVAL=60
IM_MAD=ARGUMENTS=im_kvm/im_kvm.conf,EXECUTABLE=one_im_ssh,NAME=im_kvm
MAC_PREFIX=00:03
MANAGER_TIMER=30
NETWORK_SIZE=254
PORT=2633
TM_MAD=ARGUMENTS=tm_nfs/tm_nfs.conf,EXECUTABLE=one_tm,NAME=tm_nfs
VM_DIR=/srv/cloud/one/var
VM_HOOK=ARGUMENTS=start
one-$VMID,COMMAND=/srv/cloud/one/share/hooks/ebtables-kvm,NAME=ebtables-running,ON=running,REMOTE=yes
VM_HOOK=ARGUMENTS="",COMMAND=/srv/cloud/one/share/hooks/ebtables-flush,NAME=ebtables-shutdown,ON=shutdown,REMOTE=yes
VM_HOOK=ARGUMENTS="",COMMAND=/srv/cloud/one/share/hooks/ebtables-flush,NAME=ebtables-stop,ON=stop,REMOTE=yes
VM_MAD=DEFAULT=vmm_kvm/vmm_kvm.conf,EXECUTABLE=one_vmm_kvm,NAME=vmm_kvm,TYPE=kvm
VM_POLLING_INTERVAL=60
--------------------------------------------
Fri Nov 13 17:29:52 2009 [VMM][I]: Starting Virtual Machine Manager...
Fri Nov 13 17:29:52 2009 [VMM][I]: Virtual Machine Manager started.
Fri Nov 13 17:29:52 2009 [LCM][I]: Starting Life-cycle Manager...
Fri Nov 13 17:29:52 2009 [LCM][I]: Life-cycle Manager started.
Fri Nov 13 17:29:52 2009 [InM][I]: Starting Information Manager...
Fri Nov 13 17:29:52 2009 [InM][I]: Information Manager started.
Fri Nov 13 17:29:52 2009 [TrM][I]: Starting Transfer Manager...
Fri Nov 13 17:29:52 2009 [TrM][I]: Transfer Manager started.
Fri Nov 13 17:29:52 2009 [DiM][I]: Starting Dispatch Manager...
Fri Nov 13 17:29:52 2009 [DiM][I]: Dispatch Manager started.
Fri Nov 13 17:29:52 2009 [ReM][I]: Starting Request Manager...
Fri Nov 13 17:29:52 2009 [ReM][I]: Request Manager started.
Fri Nov 13 17:29:52 2009 [ReM][I]: Starting XML-RPC server, port 2633 ...
Fri Nov 13 17:29:52 2009 [HKM][I]: Starting Hook Manager...
Fri Nov 13 17:29:52 2009 [HKM][I]: Hook Manager started.
Fri Nov 13 17:29:54 2009 [VMM][I]: Loading Virtual Machine Manager drivers.
Fri Nov 13 17:29:54 2009 [VMM][I]: Loading driver: vmm_kvm (KVM)
Fri Nov 13 17:29:54 2009 [VMM][I]: Driver vmm_kvm loaded.
Fri Nov 13 17:29:54 2009 [InM][I]: Loading Information Manager drivers.
Fri Nov 13 17:29:54 2009 [InM][I]: Loading driver: im_kvm
Fri Nov 13 17:29:54 2009 [InM][I]: Driver im_kvm loaded
Fri Nov 13 17:29:54 2009 [TM][I]: Loading Transfer Manager drivers.
Fri Nov 13 17:29:54 2009 [VMM][I]: Loading driver: tm_nfs
Fri Nov 13 17:29:54 2009 [TM][I]: Driver tm_nfs loaded.
Fri Nov 13 17:29:54 2009 [HKM][I]: Loading Hook Manager driver.
Fri Nov 13 17:29:54 2009 [HKM][I]: Hook Manager loaded
Fri Nov 13 17:30:07 2009 [ReM][D]: VirtualMachineAllocate invoked
Fri Nov 13 17:30:07 2009 [DiM][D]: Allocating a new VM
Fri Nov 13 17:30:22 2009 [InM][I]: Monitoring host omii001 (4)
Fri Nov 13 17:30:23 2009 [ReM][D]: VirtualMachineDeploy invoked
Fri Nov 13 17:32:03 2009 [InM][I]: Monitoring host omii001 (4)
Fri Nov 13 17:35:33 2009 [InM][D]: Host 4 successfully monitored.
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
solaris:/srv/cloud/one/images/debian5.img
omii001:/srv/cloud/one/var/7/images/disk.0
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
DST: /srv/cloud/one/var/7/images/disk.0
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
Creating directory /srv/cloud/one/var/7/images
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
Executed "mkdir -p /srv/cloud/one/var/7/images".
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
Executed "chmod a+w /srv/cloud/one/var/7/images".
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
Cloning /srv/cloud/one/images/debian5.img
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
Executed "cp /srv/cloud/one/images/debian5.img
/srv/cloud/one/var/7/images/disk.0".
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: LOG - 7 tm_clone.sh:
Executed "chmod a+w /srv/cloud/one/var/7/images/disk.0".
Fri Nov 13 17:35:57 2009 [TM][D]: Message received: TRANSFER SUCCESS 7 -
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 Command
execution fail: 'cat > /srv/cloud/one/var/7/images/deployment.0 && virsh
create /srv/cloud/one/var/7/images/deployment.0'
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 STDERR follows.
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 17:36:46.885:
error : No vport operation path found for host1
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 17:36:46.899:
error : No vport operation path found for host0
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 17:36:46.920:
error : No vport operation path found for host2
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 17:36:47.171:
error : Cannot find QEMU binary /usr/bin/kvm: No such file or directory
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 libvir: QEMU
error : Cannot find QEMU binary /usr/bin/kvm: No such file or directory
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 error: Failed
to create domain from /srv/cloud/one/var/7/images/deployment.0
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 error: Cannot
find QEMU binary /usr/bin/kvm: No such file or directory
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: LOG - 7 ExitCode: 1
Fri Nov 13 17:36:28 2009 [VMM][D]: Message received: DEPLOY FAILURE 7 -
Fri Nov 13 17:36:33 2009 [TM][D]: Message received: LOG - 7 tm_delete.sh:
Deleting /srv/cloud/one/var/7/images
Fri Nov 13 17:36:33 2009 [TM][D]: Message received: LOG - 7 tm_delete.sh:
Executed "rm -rf /srv/cloud/one/var/7/images".
Fri Nov 13 17:36:33 2009 [TM][D]: Message received: TRANSFER SUCCESS 7 -
Thank you in advance for your time.
Best regards,
Gianni
--
Gianni Dalla Torre
Computer Science Engineering
INFN -CNAF
Via Ranzani 13/2
40127 Bologna, Italy
Phone: +39 051 6092913
Fax: +39 051 6092916
mail: dallatorre&cnaf.infn.it
_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opennebula.org">Users@lists.opennebula.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opennebula.org/listinfo.cgi/users-opennebula.org">http://lists.opennebula.org/listinfo.cgi/users-opennebula.org</a>
--
Gianni Dalla Torre
Computer Science Engineering
INFN -CNAF
Via Ranzani 13/2
40127 Bologna, Italy
Phone: +39 051 6092913
Fax: +39 051 6092916
mail: dallatorre&cnaf.infn.it
--
Gianni Dalla Torre
Computer Science Engineering
INFN -CNAF
Via Ranzani 13/2
40127 Bologna, Italy
Phone: +39 051 6092913
Fax: +39 051 6092916
mail: dallatorre&cnaf.infn.it
_______________________________________________
Users mailing list
<a class="moz-txt-link-abbreviated" href="mailto:Users@lists.opennebula.org">Users@lists.opennebula.org</a>
<a class="moz-txt-link-freetext" href="http://lists.opennebula.org/listinfo.cgi/users-opennebula.org">http://lists.opennebula.org/listinfo.cgi/users-opennebula.org</a>
</pre>
</blockquote>
<pre wrap=""><!---->
</pre>
</blockquote>
<br>
<br>
<pre class="moz-signature" cols="72">--
Gianni Dalla Torre
Computer Science Engineering
INFN -CNAF
Via Ranzani 13/2
40127 Bologna, Italy
Phone: +39 051 6092913
Fax: +39 051 6092916
mail: dallatorre&cnaf.infn.it
</pre>
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