[Users] Wrong Master domain or its version

[Jonas Israelsson]

> Hi, I suppose you have one host, if you will take a look to
> rhev-engine logs you will see
> kind of the following error: Cannot connect to Pool wrong master
> domain or it version.

One host (only), yes.

> The only advice is to access to DB and update msater domain version
> inside storage_pool table.
> The query should be "update storage_pool set
> master_domain_version=110"
> after that please try to activate a host again

Indeed, that seem to do the trick (thanks!). Setting the version in the 
database to match the one from the log does make me able to bring the 
host back online

While the host came back online as well as all other storage domain the 
master domain did not. I remains in status locked. Part from not being 
able to access the vm-data from that domain it also gives some funny 
side effects. For instance I could quite happily put the export-domain 
to maintenance mode but not re-attach the same since the master domain 
is not active.

Not sure if related, but when trying to also take the host into 
maintenance mode it refuses due to ongoing tasks.

[root at fat-tony admin]# vdsClient -s 0 getAllTasks
4ca8e2f9-b8a6-425d-baba-b3cb9a6a154f :
         verb = createVolume
         code = 0
         state = failed
         tag = spm
         result =
         message = Task is initializing
         id = 4ca8e2f9-b8a6-425d-baba-b3cb9a6a154f

I did manage to get rid of that with 'vdsClient clearTask' but it makes 
no difference putting the host in and out of maintenance mode and or 
rebooting it. The lock remains.

I fail to find any information where this lock is set. Is is done by the 
vdsm-layer and therefore to be controlled by the...

'vdsClient aquire|releaseDomainLock' .. ?

That however seem to fail as well

vdsClient -s 0 releaseDomainLock dae1ba5e-548a-473e-94b6-7d08d3a6229a 
ea5643f7-f41f-4c44-a27f-f31240cd0f19
Traceback (most recent call last):
   File "/usr/share/vdsm/vdsClient.py", line 2411, in <module>
   File "/usr/share/vdsm/vdsClient.py", line 1381, in releaseDomainLock
   File "/usr/lib64/python2.7/xmlrpclib.py", line 1224, in __call__
   File "/usr/lib64/python2.7/xmlrpclib.py", line 1578, in __request
   File "/usr/lib64/python2.7/xmlrpclib.py", line 1264, in request
   File "/usr/lib64/python2.7/xmlrpclib.py", line 1297, in single_request
   File "/usr/lib64/python2.7/xmlrpclib.py", line 1473, in parse_response
   File "/usr/lib64/python2.7/xmlrpclib.py", line 793, in close
Fault: <Fault 1: '<type \'exceptions.Exception\'>:method 
"releaseDomainLock" is not supported'>


Could someone please point me in the right direction ?

Rgds Jonas