Dan Kenigsberg has submitted this change and it was merged.

Change subject: Fix a race existing in the singleton interface of clientIF
......................................................................


Fix a race existing in the singleton interface of clientIF

There's a race in getInstance() between clientIF initialization and MOM thread.
If for some reason the initialization of clientIF is slowed down and not 
finished
before MOM calls vdsm API, an exception will happen in MOM thread due to that
the parameter 'log' is missing. The fix is just moving the parameter check into
the protection of the singleton lock. Then MOM thread will be blocked if it 
tries
to access vdsm API when the initialization of clientIF is ongoing.

Change-Id: I6d907f5613963438c99749da674bb6588a23fe38
Signed-off-by: Mark Wu <wu...@linux.vnet.ibm.com>
---
M vdsm/clientIF.py
1 file changed, 5 insertions(+), 5 deletions(-)

Approvals:
  Adam Litke: Verified; Looks good to me, but someone else must approve
  Royce Lv: Looks good to me, but someone else must approve
  Mark Wu: Verified
  Dan Kenigsberg: Looks good to me, approved


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Gerrit-MessageType: merged
Gerrit-Change-Id: I6d907f5613963438c99749da674bb6588a23fe38
Gerrit-PatchSet: 1
Gerrit-Project: vdsm
Gerrit-Branch: master
Gerrit-Owner: Mark Wu <wu...@linux.vnet.ibm.com>
Gerrit-Reviewer: Adam Litke <a...@us.ibm.com>
Gerrit-Reviewer: Dan Kenigsberg <dan...@redhat.com>
Gerrit-Reviewer: Mark Wu <wu...@linux.vnet.ibm.com>
Gerrit-Reviewer: Royce Lv <lvro...@linux.vnet.ibm.com>
Gerrit-Reviewer: oVirt Jenkins CI Server
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