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Merge pull request #60625 from andyzhangx/azurefile-remount

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Automatic merge from submit-queue (batch tested with PRs 60623, 60625, 60520). 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>.

fix azure file plugin failure issue on Windows after node restart

**What this PR does / why we need it**:
azure file plugin on Windows does not work after node restart, this is due to New-SmbGlobalMapping powershell cmdlet has lost account name/key after reboot, we should remove the invalid link and do the mount again after kubelet restart.
add remount logic for azure file plugin in this PR

**Which issue(s) this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close the issue(s) when PR gets merged)*:
Fixes #60624

**Special notes for your reviewer**:

**Release note**:

```
fix azure file plugin failure issue on Windows after node restart
```
/sig azure
/sig windows
/assign @karataliu 
@feiskyer  pls mark this PR as v1.10 milestone, thanks
This commit is contained in:
Kubernetes Submit Queue 2018-03-01 09:03:49 -08:00 committed by GitHub
commit 6a7135b003
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1 changed files with 14 additions and 1 deletions
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15
pkg/volume/azure_file/azure_file.go
View File

@ -18,6 +18,7 @@ package azure_file
import (
"fmt"
"io/ioutil"
"os"
"runtime"
@ -241,8 +242,20 @@ func (b *azureFileMounter) SetUpAt(dir string, fsGroup *int64) error {
return err
}
if !notMnt {
return nil
// testing original mount point, make sure the mount link is valid
if _, err := ioutil.ReadDir(dir); err == nil {
glog.V(4).Infof("azureFile - already mounted to target %s", dir)
return nil
}
// mount link is invalid, now unmount and remount later
glog.Warningf("azureFile - ReadDir %s failed with %v, unmount this directory", dir, err)
if err := b.mounter.Unmount(dir); err != nil {
glog.Errorf("azureFile - Unmount directory %s failed with %v", dir, err)
return err
}
notMnt = true
}
var accountKey, accountName string
if accountName, accountKey, err = b.util.GetAzureCredentials(b.plugin.host, b.secretNamespace, b.secretName); err != nil {
return err