mirror of
https://github.com/ceph/ceph-csi.git
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b9cd0e18ad
This is a part of the stateless set of commits for CephCSI. This commit removes the dependency on config maps to store cephFS provisioned volumes, and instead relies on RADOS based objects and keys, and required CSI VolumeID encoding to detect the provisioned volumes. Changes: - Provide backward compatibility to provisioned volumes by older plugin versions (1.0.0 or older) - Remove Create/Delete support for statically provisioned volumes (fixes #382) - Added namespace support to RADOS OMaps and used the same to store RADOS CSI objects and keys in the CephFS metadata pool - Added support to mention fsname for CephFS provisioning (fixes #359) - Changed field name in CSI Identifier to 'location', to denote a pool or fscid - Updated mounter cache to use new scheme - Required Helm manifests are updated - Required documentation and other manifests are updated - Made driver option 'metadatastorage' as optional, as fresh installs do not need to specify the same Testing done: - Create/Mount/Delete PVC - Create/Delete 5 PVCs - Mount version 1.0.0 PVC - Delete version 1.0.0 PV - Mount Statically defined PV/PVC/Pod - Mount Statically defined version 1.0.0 PV/PVC/Pod - Delete Statically defined version 1.0.0 PV/PVC/Pod - Node restart when mounted to test mountcache - Use InstanceID other than 'default' - RBD basic round of tests, as namespace is added to OMaps - csitest against ceph-fs plugin - NOTE: CephFS plugin still does not detect and address already created volumes but of a different size - Test not providing any value to the metadata storage parameter Signed-off-by: ShyamsundarR <srangana@redhat.com>
115 lines
3.1 KiB
Go
115 lines
3.1 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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"k8s.io/apimachinery/pkg/util/validation"
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"k8s.io/klog"
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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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func roundUpSize(volumeSizeBytes int64, 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 = createPersistentStorage(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 = createPersistentStorage(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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func createPersistentStorage(persistentStoragePath string) error {
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return os.MkdirAll(persistentStoragePath, os.FileMode(0755))
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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 len(driverName) == 0 {
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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, id, key, pool, clusterID, objUUID string, volIDVersion uint16) (string, error) {
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poolID, err := GetPoolID(monitors, id, key, 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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