Bug 1489349

+++ This bug was initially created as a clone of Bug #1466326 +++

Description of problem:
While importing a storage domain using 'use manager gluster volume' feature it fails with error "Error while executing action DisconnectStorageServerConnection: Error storage server disconnection" and "Error while executing action: Path filed cannot be empty".

Traceback in vdsm.log:
==========================

2017-06-28 19:56:45,514+0530 INFO  (jsonrpc/5) [dispatcher] Run and protect: disconnectStorageServer(domType=7, spUUID=u'00000000-0000-0000-0000-000000000000', conList=[{u'm
nt_options': u'backup-volfile-servers=10.70.36.80:10.70.36.81', u'id': u'00000000-0000-0000-0000-000000000000', u'connection': u'', u'iqn': u'', u'user': u'', u'tpgt': u'1',
 u'vfs_type': u'glusterfs', u'password': '********', u'port': u''}], options=None) (logUtils:51)
2017-06-28 19:56:45,515+0530 ERROR (jsonrpc/5) [storage.TaskManager.Task] (Task='d79757ac-7338-4171-b01b-b9a59222c98a') Unexpected error (task:870)
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/task.py", line 877, in _run
    return fn(*args, **kargs)
  File "/usr/lib/python2.7/site-packages/vdsm/logUtils.py", line 52, in wrapper
    res = f(*args, **kwargs)
  File "/usr/share/vdsm/storage/hsm.py", line 2470, in disconnectStorageServer
    conObj = storageServer.ConnectionFactory.createConnection(conInfo)
  File "/usr/share/vdsm/storage/storageServer.py", line 638, in createConnection
    return ctor(**params)
  File "/usr/share/vdsm/storage/storageServer.py", line 245, in __init__
    self._volfileserver, volname = self._remotePath.split(":", 1)
ValueError: need more than 1 value to unpack
2017-06-28 19:56:45,555+0530 INFO  (jsonrpc/5) [storage.TaskManager.Task] (Task='d79757ac-7338-4171-b01b-b9a59222c98a') aborting: Task is aborted: u'need more than 1 value t
o unpack' - code 100 (task:1175)
2017-06-28 19:56:45,555+0530 ERROR (jsonrpc/5) [storage.Dispatcher] need more than 1 value to unpack (dispatcher:80)
Traceback (most recent call last):
  File "/usr/share/vdsm/storage/dispatcher.py", line 72, in wrapper
    result = ctask.prepare(func, *args, **kwargs)
  File "/usr/share/vdsm/storage/task.py", line 105, in wrapper
    return m(self, *a, **kw)
  File "/usr/share/vdsm/storage/task.py", line 1183, in prepare
    raise self.error
ValueError: need more than 1 value to unpack
2017-06-28 19:56:45,566+0530 INFO  (jsonrpc/5) [jsonrpc.JsonRpcServer] RPC call StoragePool.disconnectStorageServer failed (error 452) in 0.05 seconds (__init__:533)


Version-Release number of selected component (if applicable):
Red Hat Virtualization Manager Version: 4.1.2.2-0.1.el7

How reproducible:
Always

Steps to Reproduce:
1. Create  new storage domain from UI
2. Now detach and remove that storage domain
3. Try importing the same domain using 'use manage gluster volume' feature

Actual results:
Importing of storage domain fails with error mentioned in the description.

Expected results:
Importing of storage domain should be successful.

Additional info:
Importing storage domain with out using 'use mange gluster volume' feature works fine.

--- Additional comment from RamaKasturi on 2017-06-29 08:45 EDT ---



--- Additional comment from RamaKasturi on 2017-06-29 08:45 EDT ---



--- Additional comment from RamaKasturi on 2017-06-29 08:50:56 EDT ---

Logs are present in the link below:
===================================

http://rhsqe-repo.lab.eng.blr.redhat.com/sosreports/HC/1466326/