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/*
Copyright 2018 The Kubernetes Authors.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package azure
import (
"fmt"
"strings"
"github.com/Azure/azure-sdk-for-go/services/compute/mgmt/2018-04-01/compute"
"github.com/golang/glog"
"k8s.io/apimachinery/pkg/types"
)
// AttachDisk attaches a vhd to vm
// the vhd must exist, can be identified by diskName, diskURI, and lun.
func (as *availabilitySet) AttachDisk(isManagedDisk bool, diskName, diskURI string, nodeName types.NodeName, lun int32, cachingMode compute.CachingTypes) error {
vm, err := as.getVirtualMachine(nodeName)
if err != nil {
return err
}
vmName := mapNodeNameToVMName(nodeName)
nodeResourceGroup, err := as.GetNodeResourceGroup(vmName)
if err != nil {
return err
}
disks := *vm.StorageProfile.DataDisks
if isManagedDisk {
disks = append(disks,
compute.DataDisk{
Name: &diskName,
Lun: &lun,
Caching: cachingMode,
CreateOption: "attach",
ManagedDisk: &compute.ManagedDiskParameters{
ID: &diskURI,
},
})
} else {
disks = append(disks,
compute.DataDisk{
Name: &diskName,
Vhd: &compute.VirtualHardDisk{
URI: &diskURI,
},
Lun: &lun,
Caching: cachingMode,
CreateOption: "attach",
})
}
newVM := compute.VirtualMachine{
Location: vm.Location,
VirtualMachineProperties: &compute.VirtualMachineProperties{
StorageProfile: &compute.StorageProfile{
DataDisks: &disks,
},
},
}
glog.V(2).Infof("azureDisk - update(%s): vm(%s) - attach disk(%s)", nodeResourceGroup, vmName, diskName)
ctx, cancel := getContextWithCancel()
defer cancel()
if _, err := as.VirtualMachinesClient.CreateOrUpdate(ctx, nodeResourceGroup, vmName, newVM); err != nil {
glog.Errorf("azureDisk - attach disk(%s) failed, err: %v", diskName, err)
detail := err.Error()
if strings.Contains(detail, errLeaseFailed) || strings.Contains(detail, errDiskBlobNotFound) {
// if lease cannot be acquired or disk not found, immediately detach the disk and return the original error
glog.V(2).Infof("azureDisk - err %v, try detach disk(%s)", err, diskName)
as.DetachDiskByName(diskName, diskURI, nodeName)
}
} else {
glog.V(2).Infof("azureDisk - attach disk(%s) succeeded", diskName)
// Invalidate the cache right after updating
as.cloud.vmCache.Delete(vmName)
}
return err
}
// DetachDiskByName detaches a vhd from host
// the vhd can be identified by diskName or diskURI
func (as *availabilitySet) DetachDiskByName(diskName, diskURI string, nodeName types.NodeName) error {
vm, err := as.getVirtualMachine(nodeName)
if err != nil {
// if host doesn't exist, no need to detach
glog.Warningf("azureDisk - cannot find node %s, skip detaching disk %s", nodeName, diskName)
return nil
}
vmName := mapNodeNameToVMName(nodeName)
nodeResourceGroup, err := as.GetNodeResourceGroup(vmName)
if err != nil {
return err
}
disks := *vm.StorageProfile.DataDisks
bFoundDisk := false
for i, disk := range disks {
if disk.Lun != nil && (disk.Name != nil && diskName != "" && *disk.Name == diskName) ||
(disk.Vhd != nil && disk.Vhd.URI != nil && diskURI != "" && *disk.Vhd.URI == diskURI) ||
(disk.ManagedDisk != nil && diskURI != "" && *disk.ManagedDisk.ID == diskURI) {
// found the disk
glog.V(2).Infof("azureDisk - detach disk: name %q uri %q", diskName, diskURI)
disks = append(disks[:i], disks[i+1:]...)
bFoundDisk = true
break
}
}
if !bFoundDisk {
return fmt.Errorf("detach azure disk failure, disk %s not found, diskURI: %s", diskName, diskURI)
}
newVM := compute.VirtualMachine{
Location: vm.Location,
VirtualMachineProperties: &compute.VirtualMachineProperties{
StorageProfile: &compute.StorageProfile{
DataDisks: &disks,
},
},
}
glog.V(2).Infof("azureDisk - update(%s): vm(%s) - detach disk(%s)", nodeResourceGroup, vmName, diskName)
ctx, cancel := getContextWithCancel()
defer cancel()
if _, err := as.VirtualMachinesClient.CreateOrUpdate(ctx, nodeResourceGroup, vmName, newVM); err != nil {
glog.Errorf("azureDisk - detach disk(%s) failed, err: %v", diskName, err)
} else {
glog.V(2).Infof("azureDisk - detach disk(%s) succeeded", diskName)
// Invalidate the cache right after updating
as.cloud.vmCache.Delete(vmName)
}
return err
}
// GetDataDisks gets a list of data disks attached to the node.
func (as *availabilitySet) GetDataDisks(nodeName types.NodeName) ([]compute.DataDisk, error) {
vm, err := as.getVirtualMachine(nodeName)
if err != nil {
return nil, err
}
if vm.StorageProfile.DataDisks == nil {
return nil, nil
}
return *vm.StorageProfile.DataDisks, nil
}
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