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adding topology support for zfspv (#7)

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This PR adds support to allow the CSI driver to pick up a node matching the  topology specified in the storage class. Admin can specify allowedTopologies in the StorageClass to specify the nodes where the zfs pools are setup

```yaml
apiVersion: storage.k8s.io/v1
kind: StorageClass
metadata:
  name: openebs-zfspv
allowVolumeExpansion: true
parameters:
  blocksize: "4k"
  compression: "on"
  dedup: "on"
  thinprovision: "yes"
  poolname: "zfspv-pool"
provisioner: zfs-localpv
volumeBindingMode: WaitForFirstConsumer
allowedTopologies:
- matchLabelExpressions:
  - key: kubernetes.io/hostname
    values:
      - gke-zfspv-pawan-default-pool-c8929518-cgd4
      - gke-zfspv-pawan-default-pool-c8929518-dxzc
```

Note: This PR picks up the first node from the list of nodes available.

Signed-off-by: Pawan <pawan@mayadata.io>
This commit is contained in:
Pawan Prakash Sharma 2019-11-01 06:46:04 +05:30 • committed by Kiran Mova
parent 0218dacea0
commit d0e97cddb2
11 changed files with 88 additions and 48 deletions
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11
pkg/zfs/mount.go
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@ -109,14 +109,9 @@ func CreateAndMountZvol(vol *apis.ZFSVolume, mount *apis.MountInfo) error {
return status.Error(codes.Internal, "volume is owned by different node")
}
devicePath, err := createZvol(vol)
devicePath, err := GetDevicePath(vol)
if err != nil {
return status.Error(codes.Internal, err.Error())
}
err = UpdateZvolInfo(vol)
if err != nil {
return status.Error(codes.Internal, err.Error())
return status.Error(codes.Internal, "not able to get the device path")
}
/*
@ -138,7 +133,7 @@ func CreateAndMountZvol(vol *apis.ZFSVolume, mount *apis.MountInfo) error {
}
err = FormatAndMountZvol(devicePath, mount)
if err != nil {
return status.Error(codes.Internal, err.Error())
return status.Error(codes.Internal, "not able to mount the volume")
}
return err