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ddac66d76b
All calls to util.ExecCommand() now pass the context.Context. In some cases this is not possible or needed, and util.ExecCommand() will not log the command. This should make debugging easier when command executions fail. Signed-off-by: Niels de Vos <ndevos@redhat.com>
227 lines
6.5 KiB
Go
227 lines
6.5 KiB
Go
/*
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Copyright 2018 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 cephfs
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import (
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"context"
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"path"
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"strconv"
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"strings"
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"github.com/ceph/ceph-csi/internal/util"
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klog "k8s.io/klog/v2"
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)
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var (
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// clusterAdditionalInfo contains information regarding if resize is
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// supported in the particular cluster and subvolumegroup is
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// created or not.
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// Subvolumegroup creation and volume resize decisions are
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// taken through this additional cluster information.
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clusterAdditionalInfo = make(map[string]*localClusterState)
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inValidCommmand = "no valid command found"
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// ceph returns `Error ENOENT:` when subvolume or subvolume group doesnot
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// exist.
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errNotFoundString = "Error ENOENT:"
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)
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const (
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cephEntityClientPrefix = "client."
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)
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func getVolumeRootPathCephDeprecated(volID volumeID) string {
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return path.Join("/", "csi-volumes", string(volID))
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}
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func getVolumeRootPathCeph(ctx context.Context, volOptions *volumeOptions, cr *util.Credentials, volID volumeID) (string, error) {
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stdout, stderr, err := util.ExecCommand(
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ctx,
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"ceph",
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"fs",
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"subvolume",
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"getpath",
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volOptions.FsName,
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string(volID),
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"--group_name",
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volOptions.SubvolumeGroup,
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"-m", volOptions.Monitors,
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"-c", util.CephConfigPath,
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"-n", cephEntityClientPrefix+cr.ID,
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"--keyfile="+cr.KeyFile)
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if err != nil {
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stdErrString := string(stderr)
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klog.Errorf(util.Log(ctx, "failed to get the rootpath for the vol %s(%s) stdError %s"), string(volID), err, stdErrString)
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if strings.HasPrefix(stdErrString, errNotFoundString) {
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return "", util.JoinErrors(ErrVolumeNotFound, err)
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}
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return "", err
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}
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return strings.TrimSuffix(string(stdout), "\n"), nil
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}
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type localClusterState struct {
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// set true if cluster supports resize functionality.
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resizeSupported bool
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// set true once a subvolumegroup is created
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// for corresponding cluster.
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subVolumeGroupCreated bool
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}
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func createVolume(ctx context.Context, volOptions *volumeOptions, cr *util.Credentials, volID volumeID, bytesQuota int64) error {
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// verify if corresponding ClusterID key is present in the map,
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// and if not, initialize with default values(false).
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if _, keyPresent := clusterAdditionalInfo[volOptions.ClusterID]; !keyPresent {
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clusterAdditionalInfo[volOptions.ClusterID] = &localClusterState{}
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}
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// create subvolumegroup if not already created for the cluster.
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if !clusterAdditionalInfo[volOptions.ClusterID].subVolumeGroupCreated {
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err := execCommandErr(
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ctx,
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"ceph",
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"fs",
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"subvolumegroup",
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"create",
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volOptions.FsName,
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volOptions.SubvolumeGroup,
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"-m", volOptions.Monitors,
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"-c", util.CephConfigPath,
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"-n", cephEntityClientPrefix+cr.ID,
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"--keyfile="+cr.KeyFile)
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if err != nil {
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klog.Errorf(util.Log(ctx, "failed to create subvolume group %s, for the vol %s(%s)"), volOptions.SubvolumeGroup, string(volID), err)
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return err
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}
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util.DebugLog(ctx, "cephfs: created subvolume group %s", volOptions.SubvolumeGroup)
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clusterAdditionalInfo[volOptions.ClusterID].subVolumeGroupCreated = true
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}
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args := []string{
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"fs",
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"subvolume",
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"create",
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volOptions.FsName,
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string(volID),
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strconv.FormatInt(bytesQuota, 10),
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"--group_name",
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volOptions.SubvolumeGroup,
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"--mode", "777",
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"-m", volOptions.Monitors,
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"-c", util.CephConfigPath,
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"-n", cephEntityClientPrefix + cr.ID,
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"--keyfile=" + cr.KeyFile,
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}
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if volOptions.Pool != "" {
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args = append(args, "--pool_layout", volOptions.Pool)
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}
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err := execCommandErr(
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ctx,
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"ceph",
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args[:]...)
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if err != nil {
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klog.Errorf(util.Log(ctx, "failed to create subvolume %s(%s) in fs %s"), string(volID), err, volOptions.FsName)
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return err
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}
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return nil
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}
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// resizeVolume will try to use ceph fs subvolume resize command to resize the
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// subvolume. If the command is not available as a fallback it will use
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// CreateVolume to resize the subvolume.
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func resizeVolume(ctx context.Context, volOptions *volumeOptions, cr *util.Credentials, volID volumeID, bytesQuota int64) error {
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// keyPresent checks whether corresponding clusterID key is present in clusterAdditionalInfo
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var keyPresent bool
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// verify if corresponding ClusterID key is present in the map,
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// and if not, initialize with default values(false).
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if _, keyPresent = clusterAdditionalInfo[volOptions.ClusterID]; !keyPresent {
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clusterAdditionalInfo[volOptions.ClusterID] = &localClusterState{}
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}
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// resize subvolume when either it's supported, or when corresponding
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// clusterID key was not present.
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if clusterAdditionalInfo[volOptions.ClusterID].resizeSupported || !keyPresent {
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args := []string{
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"fs",
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"subvolume",
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"resize",
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volOptions.FsName,
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string(volID),
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strconv.FormatInt(bytesQuota, 10),
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"--group_name",
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volOptions.SubvolumeGroup,
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"-m", volOptions.Monitors,
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"-c", util.CephConfigPath,
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"-n", cephEntityClientPrefix + cr.ID,
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"--keyfile=" + cr.KeyFile,
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}
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err := execCommandErr(
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ctx,
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"ceph",
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args[:]...)
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if err == nil {
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clusterAdditionalInfo[volOptions.ClusterID].resizeSupported = true
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return nil
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}
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// Incase the error is other than invalid command return error to the caller.
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if !strings.Contains(err.Error(), inValidCommmand) {
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klog.Errorf(util.Log(ctx, "failed to resize subvolume %s(%s) in fs %s"), string(volID), err, volOptions.FsName)
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return err
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}
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}
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clusterAdditionalInfo[volOptions.ClusterID].resizeSupported = false
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return createVolume(ctx, volOptions, cr, volID, bytesQuota)
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}
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func purgeVolume(ctx context.Context, volID volumeID, cr *util.Credentials, volOptions *volumeOptions) error {
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err := execCommandErr(
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ctx,
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"ceph",
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"fs",
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"subvolume",
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"rm",
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volOptions.FsName,
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string(volID),
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"--group_name",
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volOptions.SubvolumeGroup,
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"-m", volOptions.Monitors,
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"-c", util.CephConfigPath,
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"-n", cephEntityClientPrefix+cr.ID,
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"--keyfile="+cr.KeyFile)
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if err != nil {
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klog.Errorf(util.Log(ctx, "failed to purge subvolume %s(%s) in fs %s"), string(volID), err, volOptions.FsName)
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if strings.HasPrefix(err.Error(), errNotFoundString) {
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return util.JoinErrors(ErrVolumeNotFound, err)
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}
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return err
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}
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return nil
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}
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