mirror of
https://github.com/ceph/ceph-csi.git
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f4c80dec9a
in NodeStage RPC call we have to map the device to the node plugin and make sure the the device will be mounted to the global path in nodeUnstage request unmount the device from global path and unmap the device if the volume mode is block we will be creating a file inside a stageTargetPath and it will be considered as the global path Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>
144 lines
3.9 KiB
Go
144 lines
3.9 KiB
Go
/*
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Copyright 2019 The Ceph-CSI Authors.
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Licensed under the Apache License, Version 2.0 (the "License");
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you may not use this file except in compliance with the License.
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You may obtain a copy of the License at
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http://www.apache.org/licenses/LICENSE-2.0
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Unless required by applicable law or agreed to in writing, software
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distributed under the License is distributed on an "AS IS" BASIS,
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WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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See the License for the specific language governing permissions and
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limitations under the License.
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*/
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package util
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import (
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"os"
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"path"
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"strings"
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"github.com/pkg/errors"
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"google.golang.org/grpc/codes"
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"google.golang.org/grpc/status"
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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/klog"
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"k8s.io/kubernetes/pkg/util/mount"
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)
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// remove this once kubernetes v1.14.0 release is done
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// https://github.com/kubernetes/cloud-provider/blob/master/volume/helpers/rounding.go
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const (
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// MiB - MebiByte size
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MiB = 1024 * 1024
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)
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// RoundUpToMiB rounds up given quantity upto chunks of MiB
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func RoundUpToMiB(size int64) int64 {
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requestBytes := size
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return roundUpSize(requestBytes, MiB)
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}
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// variables which will be set during the build time
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var (
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// GitCommit tell the latest git commit image is built from
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GitCommit string
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// DriverVersion which will be driver version
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DriverVersion string
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)
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func roundUpSize(volumeSizeBytes, allocationUnitBytes int64) int64 {
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roundedUp := volumeSizeBytes / allocationUnitBytes
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if volumeSizeBytes%allocationUnitBytes > 0 {
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roundedUp++
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}
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return roundedUp
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}
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// CreatePersistanceStorage creates storage path and initializes new cache
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func CreatePersistanceStorage(sPath, metaDataStore, driverName string) (CachePersister, error) {
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var err error
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if err = CreateMountPoint(path.Join(sPath, "controller")); err != nil {
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klog.Errorf("failed to create persistent storage for controller: %v", err)
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return nil, err
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}
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if err = CreateMountPoint(path.Join(sPath, "node")); err != nil {
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klog.Errorf("failed to create persistent storage for node: %v", err)
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return nil, err
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}
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cp, err := NewCachePersister(metaDataStore, driverName)
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if err != nil {
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klog.Errorf("failed to define cache persistence method: %v", err)
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return nil, err
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}
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return cp, err
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}
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// ValidateDriverName validates the driver name
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func ValidateDriverName(driverName string) error {
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if driverName == "" {
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return errors.New("driver name is empty")
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}
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if len(driverName) > 63 {
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return errors.New("driver name length should be less than 63 chars")
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}
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var err error
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for _, msg := range validation.IsDNS1123Subdomain(strings.ToLower(driverName)) {
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if err == nil {
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err = errors.New(msg)
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continue
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}
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err = errors.Wrap(err, msg)
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}
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return err
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}
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// GenerateVolID generates a volume ID based on passed in parameters and version, to be returned
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// to the CO system
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func GenerateVolID(monitors string, cr *Credentials, pool, clusterID, objUUID string, volIDVersion uint16) (string, error) {
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poolID, err := GetPoolID(monitors, cr, pool)
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if err != nil {
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return "", err
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}
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// generate the volume ID to return to the CO system
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vi := CSIIdentifier{
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LocationID: poolID,
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EncodingVersion: volIDVersion,
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ClusterID: clusterID,
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ObjectUUID: objUUID,
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}
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volID, err := vi.ComposeCSIID()
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return volID, err
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}
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// CreateMountPoint creates the directory with given path
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func CreateMountPoint(mountPath string) error {
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return os.MkdirAll(mountPath, 0750)
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}
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// IsMountPoint checks if the given path is mountpoint or not
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func IsMountPoint(p string) (bool, error) {
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dummyMount := mount.New("")
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notMnt, err := dummyMount.IsLikelyNotMountPoint(p)
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if err != nil {
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return false, status.Error(codes.Internal, err.Error())
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}
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return !notMnt, nil
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}
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// Mount mounts the source to target path
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func Mount(source, target, fstype string, options []string) error {
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dummyMount := mount.New("")
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return dummyMount.Mount(source, target, fstype, options)
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}
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