Didi,
is this the same thing you’ve found out recently?

Thanks,
michal

> On 31 Jul 2019, at 10:01, Kapetanakis Giannis <bil...@edu.physics.uoc.gr> 
> wrote:
> 
> On 31/07/2019 10:47, Kapetanakis Giannis wrote:
>> Hi,
>> 
>> Trying today engine-setup to update from 4.3.3 -> 4.3.5 I got this error:
>> 
>> [ ERROR ] Failed to execute stage 'Setup validation': local variable 
>> 'snapshot_cl' referenced before assignment
>> 
>> In log file I see:
>> 
>> 2019-07-31 10:43:00,375+0300 DEBUG otopi.context context._executeMethod:145 
>> method exception
>> Traceback (most recent call last):
>>   File "/usr/lib/python2.7/site-packages/otopi/context.py", line 132, in 
>> _executeMethod
>>     method['method']()
>>   File 
>> "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/db/schema.py",
>>  line 437, in _validation
>>     self._checkSnapshotCompatibilityVersion()
>>   File 
>> "/usr/share/ovirt-engine/setup/bin/../plugins/ovirt-engine-setup/ovirt-engine/db/schema.py",
>>  line 212, in _checkSnapshotCompatibilityVersion
>>     'v': snapshot_cl,
>> UnboundLocalError: local variable 'snapshot_cl' referenced before assignment
>> 2019-07-31 10:43:00,381+0300 ERROR otopi.context context._executeMethod:154 
>> Failed to execute stage 'Setup validation': local variable 'snapshot_cl' 
>> referenced before assignment
>> 
>> Any hints?
>> 
>> thanks
>> 
>> Giannis
> 
> 
> After removing all snapshots, I was able to continue the upgrade.
> 
> G
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