Created attachment 935845 [details]
engine.log during create

Sounds like a trivial fix.

This happen when using jsonrpc.

Thread-3406::DEBUG::2014-09-09 11:32:59,067::__init__::467::jsonrpc.JsonRpcServer::(_serveRequest) Calling 'StorageDomain.create' in bridge with {u'domainClass': 1, u'typeArgs': u'192.168.2.1:/home/storage/data2', u'name': u'data2-nfs', u'domainType': 1, u'storagedomainID': u'85442237-be11-4bd0-b6c3-43ba60c1b87f'}
Thread-3406::DEBUG::2014-09-09 11:32:59,068::task::595::Storage.TaskManager.Task::(_updateState) Task=`0f9733c1-a367-4968-b853-de77457f5356`::moving from state init -> state preparing
Thread-3406::INFO::2014-09-09 11:32:59,068::logUtils::44::dispatcher::(wrapper) Run and protect: createStorageDomain(storageType=1, sdUUID=u'85442237-be11-4bd0-b6c3-43ba60c1b87f', domainName=u'data2-nfs', typeSpecificArg=u'192.168.2.1:/home/storage/data2', domClass=1, domVersion=0, options=None)

Piotr, can you take a look at this?

I checked JsonRpcVdsServer and it seems that jsonrpc code gets this value from parameters provided to CreateStorageDomainVDSCommand.

Have you checked how it works with xmlrpc?

Yes, xmlrpc works fine as documented and proven in https://bugzilla.redhat.com/show_bug.cgi?id=1139401

Looking at the engine side:

    @Override
    public StatusOnlyReturnForXmlRpc createStorageDomain(int domainType,
            String sdUUID,
            String domainName,
            String arg,
            int storageType,
            String storageFormatType) {
        // storageFormatType not used and it can be removed from interface
        JsonRpcRequest request =
                new RequestBuilder("StorageDomain.create").withParameter("storagedomainID", sdUUID)
                        .withParameter("domainType", domainType)
                        .withParameter("typeArgs", arg)
                        .withParameter("name", domainName)
                        .withParameter("domainClass", storageType)
                        .build();
        Map<String, Object> response = new FutureMap(this.client, request);
        return new StatusOnlyReturnForXmlRpc(response);
    }

The comment is clearly wrong, and volFormat is clearly required.

In API.py:

   def create(self, size, volFormat, preallocate, diskType, desc,
               srcImgUUID, srcVolUUID):
        return self._irs.createVolume(self._sdUUID, self._spUUID,
                                      self._imgUUID, size, volFormat,
                                      preallocate, diskType, self._UUID, desc,
                                      srcImgUUID, srcVolUUID)

However, it seems to be missing from the shcema:

{'command': {'class': 'StorageDomain', 'name': 'create'},
 'data': {'storagedomainID': 'UUID', 'domainType': 'StorageDomainType',
          'typeArgs': 'StorageDomainCreateArguments', 'name': 'str',
          'domainClass': 'StorageDomainImageClass', '*version': 'int'}}


IIUC, it should be added to the schema and the engine calling code.

Since this works properly in XMLRPC, moving to infra.

(In reply to Allon Mureinik from comment #6)
This is the correct create method from StorageDomain:

    def create(self, type, typeArgs, name, domainClass, version=None):
        if version is None:
            version = constants.SUPPORTED_DOMAIN_VERSIONS[0]
        return self._irs.createStorageDomain(type, self._UUID, name, typeArgs,
                                             domainClass, version)

And it *exists* in the schema - '*version': 'int'

So this seems to be a missing parameter in the Engine side when using
jsonrpc.

ok, ovirt-engine-backend-3.5.0-0.0.master.20140911085455.gite1c5ffd.el6.noarch

# grep ^VER /mnt/testovic/ad331fa7-258b-4ef7-b37b-e99202191ad0/dom_md/metadata 
VERSION=3

(In reply to Jiri Belka from comment #8)
Jiri, just to be sure - the host you were testing was using jsonrpc - right?

Yes, it's checked by default, so I suppose it uses that :)

oVirt 3.5 has been released and should include the fix for this issue.