I was right.

Against what to bugzilla?

This is a show stopper for fedora 19 ovirt users...

[root@tekkaman log]# vdsClient -s 0 getVdsCaps
Unexpected exception

[root@tekkaman log]# yum downgrade python-lxml python-ethtool
Loaded plugins: fastestmirror, langpacks, refresh-packagekit, versionlock
Dropbox                                                                                                                        |  951 B  00:00:00    
adobe-linux-x86_64                                                                                                             |  951 B  00:00:00    
fedora-virt-preview                                                                                                            | 2.9 kB  00:00:00    
google-chrome                                                                                                                  |  951 B  00:00:00    
livna                                                                                                                          | 1.3 kB  00:00:00    
ovirt-3.3.3                                                                                                                    | 2.9 kB  00:00:00    
ovirt-stable                                                                                                                   | 2.9 kB  00:00:00    
rpmfusion-free-updates                                                                                                         | 3.3 kB  00:00:00    
rpmfusion-nonfree-updates                                                                                                      | 3.3 kB  00:00:00    
updates/19/x86_64/metalink                                                                                                     |  28 kB  00:00:00    
Loading mirror speeds from cached hostfile
 * fedora: mirror.netcologne.de
 * livna: rpm.livna.org
 * rpmfusion-free: mirror.switch.ch
 * rpmfusion-free-updates: mirror.switch.ch
 * rpmfusion-nonfree: mirror.switch.ch
 * rpmfusion-nonfree-updates: mirror.switch.ch
 * updates: mirror.netcologne.de
Resolving Dependencies
--> Running transaction check
---> Package python-ethtool.x86_64 0:0.8-1.fc19 will be a downgrade
---> Package python-ethtool.x86_64 0:0.9-2.fc19 will be erased
---> Package python-lxml.x86_64 0:3.2.1-1.fc19 will be a downgrade
---> Package python-lxml.x86_64 0:3.3.5-1.fc19 will be erased
--> Finished Dependency Resolution

Dependencies Resolved

======================================================================================================================================================
 Package                                 Arch                            Version                                Repository                       Size
======================================================================================================================================================
Downgrading:
 python-ethtool                          x86_64                          0.8-1.fc19                             fedora                           32 k
 python-lxml                             x86_64                          3.2.1-1.fc19                           fedora                          752 k

Transaction Summary
======================================================================================================================================================
Downgrade  2 Packages

Total download size: 785 k
Is this ok [y/d/N]:
Downloading packages:
(1/2): python-ethtool-0.8-1.fc19.x86_64.rpm                                                                                    |  32 kB  00:00:00    
(2/2): python-lxml-3.2.1-1.fc19.x86_64.rpm                                                                                     | 752 kB  00:00:02    
------------------------------------------------------------------------------------------------------------------------------------------------------
Total                                                                                                                 317 kB/s | 785 kB  00:00:02    
Running transaction check
Running transaction test
Transaction test succeeded
Running transaction
  Installing : python-lxml-3.2.1-1.fc19.x86_64                                                                                                    1/4
  Installing : python-ethtool-0.8-1.fc19.x86_64                                                                                                   2/4
  Cleanup    : python-lxml-3.3.5-1.fc19.x86_64                                                                                                    3/4
  Cleanup    : python-ethtool-0.9-2.fc19.x86_64                                                                                                   4/4
  Verifying  : python-ethtool-0.8-1.fc19.x86_64                                                                                                   1/4
  Verifying  : python-lxml-3.2.1-1.fc19.x86_64                                                                                                    2/4
  Verifying  : python-ethtool-0.9-2.fc19.x86_64                                                                                                   3/4
  Verifying  : python-lxml-3.3.5-1.fc19.x86_64                                                                                                    4/4

Removed:
  python-ethtool.x86_64 0:0.9-2.fc19                                         python-lxml.x86_64 0:3.3.5-1.fc19                                       

Installed:
  python-ethtool.x86_64 0:0.8-1.fc19                                         python-lxml.x86_64 0:3.2.1-1.fc19                                       

Complete!

[root@tekkaman log]# vdsClient -s 0 getVdsCaps
Unexpected exception


[root@tekkaman log]# systemctl restart vdsmd

[root@tekkaman log]# systemctl status vdsmd
vdsmd.service - Virtual Desktop Server Manager
   Loaded: loaded (/usr/lib/systemd/system/vdsmd.service; enabled)
   Active: active (running) since Sun 2014-05-11 23:44:52 CEST; 16s ago
  Process: 13935 ExecStopPost=/usr/libexec/vdsm/vdsmd_init_common.sh --post-stop (code=exited, status=0/SUCCESS)
  Process: 13939 ExecStartPre=/usr/libexec/vdsm/vdsmd_init_common.sh --pre-start (code=exited, status=0/SUCCESS)
 Main PID: 14003 (vdsm)
   CGroup: name=systemd:/system/vdsmd.service
           ├─14003 /usr/bin/python /usr/share/vdsm/vdsm
           ├─14074 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 32 30
           ├─14081 rpc.statd --no-notify
           ├─14103 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 34 32
           ├─14105 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 41 40
           ├─14106 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 48 46
           ├─14107 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 54 48
           ├─14108 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 41 40
           ├─14121 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 50 41
           ├─14123 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 66 65
           ├─14125 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 71 50
           ├─14129 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 75 71
           ├─14131 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 81 75
           ├─14135 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 92 89
           ├─14137 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 75 65
           └─14138 /usr/bin/python /usr/share/vdsm/storage/remoteFileHandler.pyc 89 75

May 11 23:44:53 tekkaman.localdomain.local vdsm[14003]: vdsm vds WARNING Unable to load the json rpc server module. Please make sure it is installed.
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 client step 2
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 parse_server_challenge()
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 ask_user_info()
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 client step 2
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 ask_user_info()
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 make_client_response()
May 11 23:44:53 tekkaman.localdomain.local python[14003]: DIGEST-MD5 client step 3
May 11 23:44:57 tekkaman.localdomain.local rpc.statd[14081]: Version 1.2.7 starting
May 11 23:44:57 tekkaman.localdomain.local rpc.statd[14081]: Flags: TI-RPC

[root@tekkaman log]# vdsClient -s 0 getVdsCaps
    HBAInventory = {'FC': [], 'iSCSI': [{'InitiatorName': 'iqn.1994-05.com.redhat:e6aa759a959'}]}
    ISCSIInitiatorName = 'iqn.1994-05.com.redhat:e6aa759a959'
    bondings = {'bond0': {'addr': '',
                          'cfg': {},
                          'hwaddr': '9a:0f:68:19:0f:87',
                          'ipv6addrs': [],
                          'mtu': '1500',
                          'netmask': '',
                          'slaves': []}}
    bridges = {';vdsmdummy;': {'addr': '',
                               'cfg': {},
                               'gateway': '',
                               'ipv6addrs': [],
                               'ipv6gateway': '::',
                               'mtu': '1500',
                               'netmask': '',
                               'ports': [],
                               'stp': 'off'},
               'ovirtmgmt': {'addr': '192.168.1.101',
                             'cfg': {'BOOTPROTO': 'none',
                                     'DELAY': '0',
                                     'DEVICE': 'ovirtmgmt',
                                     'GATEWAY': '192.168.1.1',
                                     'IPADDR': '192.168.1.101',
                                     'NETMASK': '255.255.255.0',
                                     'NM_CONTROLLED': 'no',
                                     'ONBOOT': 'yes',
                                     'TYPE': 'Bridge'},
                             'gateway': '192.168.1.1',
                             'ipv6addrs': ['fe80::92e6:baff:fec9:f1e1/64'],
                             'ipv6gateway': '::',
                             'mtu': '1500',
                             'netmask': '255.255.255.0',
                             'ports': ['p10p1'],
                             'stp': 'off'}}
    clusterLevels = ['3.0', '3.1', '3.2', '3.3', '3.4']
    cpuCores = '4'
    cpuFlags = 'fpu,vme,de,pse,tsc,msr,pae,mce,cx8,apic,sep,mtrr,pge,mca,cmov,pat,pse36,clflush,mmx,fxsr,sse,sse2,ht,syscall,nx,mmxext,fxsr_opt,pdpe1gb,rdtscp,lm,3dnowext,3dnow,constant_tsc,rep_good,nopl,nonstop_tsc,extd_apicid,pni,monitor,cx16,popcnt,lahf_lm,cmp_legacy,svm,extapic,cr8_legacy,abm,sse4a,misalignsse,3dnowprefetch,osvw,ibs,skinit,wdt,hw_pstate,npt,lbrv,svm_lock,nrip_save,model_athlon,model_Opteron_G3,model_Opteron_G1,model_phenom,model_Opteron_G2'
    cpuModel = 'AMD Athlon(tm) II X4 630 Processor'
    cpuSockets = '1'
    cpuSpeed = '2800.000'
    cpuThreads = '4'
    emulatedMachines = ['pc',
                        'pc-q35-1.4',
                        'pc-q35-1.5',
                        'q35',
                        'isapc',
                        'pc-0.10',
                        'pc-0.11',
                        'pc-0.12',
                        'pc-0.13',
                        'pc-0.14',
                        'pc-0.15',
                        'pc-1.0',
                        'pc-1.1',
                        'pc-1.2',
                        'pc-1.3',
                        'pc-i440fx-1.4',
                        'pc-i440fx-1.5',
                        'none']
    guestOverhead = '65'
    hooks = {}
    kvmEnabled = 'true'
    lastClient = '192.168.1.101'
    lastClientIface = 'ovirtmgmt'
    management_ip = '0.0.0.0'
    memSize = '16048'
    netConfigDirty = 'False'
    networks = {'ovirtmgmt': {'addr': '192.168.1.101',
                              'bridged': True,
                              'cfg': {'BOOTPROTO': 'none',
                                      'DELAY': '0',
                                      'DEVICE': 'ovirtmgmt',
                                      'GATEWAY': '192.168.1.1',
                                      'IPADDR': '192.168.1.101',
                                      'NETMASK': '255.255.255.0',
                                      'NM_CONTROLLED': 'no',
                                      'ONBOOT': 'yes',
                                      'TYPE': 'Bridge'},
                              'gateway': '192.168.1.1',
                              'iface': 'ovirtmgmt',
                              'ipv6addrs': ['fe80::92e6:baff:fec9:f1e1/64'],
                              'ipv6gateway': '::',
                              'mtu': '1500',
                              'netmask': '255.255.255.0',
                              'ports': ['p10p1'],
                              'stp': 'off'}}
    nics = {'p10p1': {'addr': '',
                      'cfg': {'BRIDGE': 'ovirtmgmt',
                              'DEVICE': 'p10p1',
                              'HWADDR': '90:e6:ba:c9:f1:e1',
                              'NM_CONTROLLED': 'no',
                              'ONBOOT': 'yes'},
                      'hwaddr': '90:e6:ba:c9:f1:e1',
                      'ipv6addrs': ['fe80::92e6:baff:fec9:f1e1/64'],
                      'mtu': '1500',
                      'netmask': '',
                      'speed': 100}}
    operatingSystem = {'name': 'Fedora', 'release': '8', 'version': '19'}
    packages2 = {'kernel': {'buildtime': 1398276657.0,
                            'release': '100.fc19.x86_64',
                            'version': '3.13.11'},
                 'libvirt': {'buildtime': 1387094943,
                             'release': '1.fc19',
                             'version': '1.1.3.2'},
                 'mom': {'buildtime': 1391183561, 'release': '1.fc19', 'version': '0.4.0'},
                 'qemu-img': {'buildtime': 1384762225,
                              'release': '2.fc19',
                              'version': '1.6.1'},
                 'qemu-kvm': {'buildtime': 1384762225,
                              'release': '2.fc19',
                              'version': '1.6.1'},
                 'spice-server': {'buildtime': 1383130020,
                                  'release': '3.fc19',
                                  'version': '0.12.4'},
                 'vdsm': {'buildtime': 1395804204, 'release': '0.fc19', 'version': '4.14.6'}}
    reservedMem = '321'
    rngSources = ['random']
    software_revision = '0'
    software_version = '4.14'
    supportedENGINEs = ['3.0', '3.1', '3.2', '3.3', '3.4']
    supportedProtocols = ['2.2', '2.3']
    uuid = 'E0E1001E-8C00-002A-6F9A-90E6BAC9F1E1'
    version_name = 'Snow Man'
    vlans = {}
    vmTypes = ['kvm']

And I'm now able to start and connect to my VM again.

HIH,
Gianluca