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Merge pull request #55217 from FengyunPan/waitforattach

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Automatic merge from submit-queue (batch tested with PRs 55217, 54260). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

Checking Cinder disk when tickers are delivered

Cinder's WaitForAttach() runs probeAttachedVolume() 2 times per
second(L243 and L247), that triggers SCSI rescan and generates many udev "change"
events.

**Release note**:
```release-note
NONE
```
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Kubernetes Submit Queue 2017-11-20 05:41:21 -08:00 committed by GitHub
commit 435cbb81d5
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pkg/volume/cinder/attacher.go
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@ -240,7 +240,6 @@ func (attacher *cinderDiskAttacher) WaitForAttach(spec *volume.Spec, devicePath
defer timer.Stop()
for {
probeAttachedVolume()
select {
case <-ticker.C:
glog.V(5).Infof("Checking Cinder disk %q is attached.", volumeID)