Modifies the VolumeZonePredicate to handle a PV that belongs to more
then one zone or region. This is indicated by the zone or region label
value containing a comma separated list.
Automatic merge from submit-queue (batch tested with PRs 51819, 51706, 51761, 51818, 51500)
Fix local storage code to follow go style
**What this PR does / why we need it**:
Fix local storage code to follow go style
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #
**Special notes for your reviewer**:
**Release note**:
```release-note
NONE
```
Automatic merge from submit-queue (batch tested with PRs 51805, 51725, 50925, 51474, 51638)
Flexvolume dynamic plugin discovery: Prober unit tests and basic e2e test.
**What this PR does / why we need it**: Tests for changes introduced in PR #50031 .
As part of the prober unit test, I mocked filesystem, filesystem watch, and Flexvolume plugin initialization.
Moved the filesystem event goroutine to watcher implementation.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#51147
**Special notes for your reviewer**:
First commit contains added functionality of the mock filesystem.
Second commit is the refactor for moving mock filesystem into a common util directory.
Third commit is the unit and e2e tests.
**Release note**:
```release-note
NONE
```
/release-note-none
/sig storage
/assign @saad-ali @liggitt
/cc @mtaufen @chakri-nelluri @wongma7
Automatic merge from submit-queue (batch tested with PRs 51628, 51637, 51490, 51279, 51302)
Fix iSCSI WaitForAttach not mounting a volume
WaitForAttach failed consistently with this error:
```
Heuristic determination of mount point failed:stat /var/lib/kubelet/plugins/kubernetes.io/iscsi/iface-default/10.128.0.3:3260-iqn.2003-01.org.linux-iscsi.f21.x8664:sn.4b0aae584f7c-lun-0: no such file or directory
```
We should ignore "no such file or directory" eror, the directory is created just few lines below.
Fixes: #51625
**Release note**:
```release-note
NONE
```
/sig storage
/assign @mtanino
Automatic merge from submit-queue (batch tested with PRs 51574, 51534, 49257, 44680, 48836)
rbd: default image format to v2 instead of deprecated v1
**What this PR does / why we need it**:
Image format v1 has been deprecated since the Infernalis release of
Ceph over two years ago.
**Release note**:
```StorageClass Ceph RBD now defaults to using the v2 image format ```
WaitForAttach failed consistently with this error:
Heuristic determination of mount point failed:stat /var/lib/kubelet/plugins/kubernetes.io/iscsi/iface-default/10.128.0.3:3260-iqn.2003-01.org.linux-iscsi.f21.x8664:sn.4b0aae584f7c-lun-0: no such file or directory
We should ignore "no such file or directory" eror, the directory is created
just few lines below.
Automatic merge from submit-queue (batch tested with PRs 51439, 51361, 51140, 51539, 51585)
Iscsi handle failed mount
**What this PR does / why we need it**:
**Which issue this PR fixes**: fixes#50556
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 50919, 51410, 50099, 51300, 50296)
Take mount options to GA by adding PV.spec.mountOptions
**What this PR does / why we need it**: Implements https://github.com/kubernetes/community/pull/771
issue: https://github.com/kubernetes/features/issues/168
**Special notes for your reviewer**:
TODO:
- ~StorageClass mountOptions~
As described in proposal, this adds PV.spec.mountOptions + mountOptions parameter to every plugin that is both provisionable & supports mount options.
(personally, even having done all the work already, i don't agree w/ the proposal that mountOptions should be SC parameter but... :))
**Release note**:
```release-note
Add mount options field to PersistentVolume spec
```
Automatic merge from submit-queue
Add volume operation metrics to operation executor and PV controller
This PR implements the proposal for high level volume metrics https://github.com/kubernetes/community/pull/809
**Special notes for your reviewer**:
~Differences from proposal:~ all resolved
~"verify_volume" is now "verify_volumes_are_attached" + "verify_volumes_are_attached_per_node" + "verify_controller_attached_volume." Which of them do we want?~
~There is no "mount_device" metric because the MountVolume operation combines MountDevice and mount (plugin.Setup). Do we want to extract the mount_device metric or is it okay to keep mountvolume as one? For attachable volumes, MountDevice is the actual mount and Setup is a bindmount + setvolumeownership. For unattachable, mountDevice does not occur and Setup is an actual mount + setvolumeownership.~
~PV controller metrics I did not implement following the proposal at all. I did not change goroutinemap nor scheduleOperation. Because provisionClaimOperation does not return an error, so it's impossible for the caller to know if there is actually a failure worth reporting. So I manually create a new metric inside the function according to some conditions.~
@gnufied
I have tested the operationexecutor metrics but not provision & delete. Sample:

**Release note**:
```release-note
Add error count and time-taken metrics for storage operations such as mount and attach, per-volume-plugin.
```
Automatic merge from submit-queue (batch tested with PRs 49849, 50334, 51414)
Support iscsi volume attach and detach
**What this PR does / why we need it**:
Support iSCSI volume attach and detach to enforce RWO access
**Which issue this PR fixes** : fixes#48953
**Special notes for your reviewer**:
**Release note**:
```
NONE
```
This change is prerequisite for implementing iSCSI attacher
and detacher.
In order to use chap authentication at iSCSI plugin after
implementing attacher and detacher, secret is needed at
AttachDisk() which is called from WaitForAttach().
To obtain secret, pod information is required, but
WaitForAttach() doesn't pass pod information inside.
This patch adds 'pod' as an argument of WaitForAttach()
and adds changes to drivers who implements WaitForAttach().
Fixes#48953
Automatic merge from submit-queue
Fix swallowed error in iscsi package
**What this PR does / why we need it**: Fixes a swallowed error in the iscsi package.
```release-note NONE
```
Automatic merge from submit-queue
Fix swallowed errors in tests of photon_pd package
**What this PR does / why we need it**: Fixes swallowed errors in the tests of the photon_pd package.
```release-note NONE
```
Automatic merge from submit-queue (batch tested with PRs 51174, 51363, 51087, 51382, 51388)
Fix swallowed error in scaleio package tests
**What this PR does / why we need it**: Fixes a dropped error in the tests of the scaleio package.
**Release note**:
```release-note NONE
```
Automatic merge from submit-queue (batch tested with PRs 51174, 51363, 51087, 51382, 51388)
Add InstanceExistsByProviderID to cloud provider interface for CCM
**What this PR does / why we need it**:
Currently, [`MonitorNode()`](02b520f0a4/pkg/controller/cloud/nodecontroller.go (L240)) in the node controller checks with the CCM if a node still exists by calling `ExternalID(nodeName)`. `ExternalID` is supposed to return the provider id of a node which is not supported on every cloud. This means that any clouds who cannot infer the provider id by the node name from a remote location will never remove nodes that no longer exist.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50985
**Special notes for your reviewer**:
We'll want to create a subsequent issue to track the implementation of these two new methods in the cloud providers.
**Release note**:
```release-note
Adds `InstanceExists` and `InstanceExistsByProviderID` to cloud provider interface for the cloud controller manager
```
/cc @wlan0 @thockin @andrewsykim @luxas @jhorwit2
/area cloudprovider
/sig cluster-lifecycle
Automatic merge from submit-queue (batch tested with PRs 51054, 51101, 50031, 51296, 51173)
Dynamic Flexvolume plugin discovery, probing with filesystem watch.
**What this PR does / why we need it**: Enables dynamic Flexvolume plugin discovery. This model uses a filesystem watch (fsnotify library), which notifies the system that a probe is necessary only if something changes in the Flexvolume plugin directory.
This PR uses the dependency injection model in https://github.com/kubernetes/kubernetes/pull/49668.
**Release Note**:
```release-note
Dynamic Flexvolume plugin discovery. Flexvolume plugins can now be discovered on the fly rather than only at system initialization time.
```
/sig-storage
/assign @jsafrane @saad-ali
/cc @bassam @chakri-nelluri @kokhang @liggitt @thockin
Automatic merge from submit-queue (batch tested with PRs 51235, 50819, 51274, 50972, 50504)
handle failed mounts for fc volumes
**What this PR does / why we need it**: handles failed mounts for fc
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#50502
**Special notes for your reviewer**:
**Release note**:
```release-note
None
```
Automatic merge from submit-queue (batch tested with PRs 51235, 50819, 51274, 50972, 50504)
Clean cinder detachlogerror
**What this PR does / why we need it**:
**Which issue this PR fixes** : fixes#50441
**Special notes for your reviewer**:
**Release note**:
```release-note
```