mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-21 04:20:23 +00:00
492 lines
14 KiB
Go
492 lines
14 KiB
Go
/*
|
|
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 rbd
|
|
|
|
import (
|
|
"fmt"
|
|
"os/exec"
|
|
"strings"
|
|
"time"
|
|
|
|
"github.com/golang/glog"
|
|
"github.com/pkg/errors"
|
|
"k8s.io/apimachinery/pkg/util/sets"
|
|
"k8s.io/kubernetes/pkg/util/keymutex"
|
|
)
|
|
|
|
const (
|
|
imageWatcherStr = "watcher="
|
|
rbdImageFormat1 = "1"
|
|
rbdImageFormat2 = "2"
|
|
imageSizeStr = "size "
|
|
sizeDivStr = " MB in"
|
|
kubeLockMagic = "kubelet_lock_magic_"
|
|
// The following three values are used for 30 seconds timeout
|
|
// while waiting for RBD Watcher to expire.
|
|
rbdImageWatcherInitDelay = 1 * time.Second
|
|
rbdImageWatcherFactor = 1.4
|
|
rbdImageWatcherSteps = 10
|
|
rbdDefaultMounter = "rbd"
|
|
)
|
|
|
|
type rbdVolume struct {
|
|
VolName string `json:"volName"`
|
|
VolID string `json:"volID"`
|
|
Monitors string `json:"monitors"`
|
|
MonValueFromSecret string `json:"monValueFromSecret"`
|
|
Pool string `json:"pool"`
|
|
ImageFormat string `json:"imageFormat"`
|
|
ImageFeatures string `json:"imageFeatures"`
|
|
VolSize int64 `json:"volSize"`
|
|
AdminId string `json:"adminId"`
|
|
UserId string `json:"userId"`
|
|
Mounter string `json:"mounter"`
|
|
}
|
|
|
|
type rbdSnapshot struct {
|
|
SourceVolumeID string `json:"sourceVolumeID"`
|
|
VolName string `json:"volName"`
|
|
SnapName string `json:"snapName"`
|
|
SnapID string `json:"sanpID"`
|
|
Monitors string `json:"monitors"`
|
|
MonValueFromSecret string `json:"monValueFromSecret"`
|
|
Pool string `json:"pool"`
|
|
CreatedAt int64 `json:"createdAt"`
|
|
SizeBytes int64 `json:"sizeBytes"`
|
|
AdminId string `json:"adminId"`
|
|
UserId string `json:"userId"`
|
|
}
|
|
|
|
var (
|
|
// serializes operations based on "<rbd pool>/<rbd image>" as key
|
|
attachdetachMutex = keymutex.NewKeyMutex()
|
|
// serializes operations based on "volume name" as key
|
|
volumeNameMutex = keymutex.NewKeyMutex()
|
|
// serializes operations based on "volume id" as key
|
|
volumeIDMutex = keymutex.NewKeyMutex()
|
|
// serializes operations based on "snapshot name" as key
|
|
snapshotNameMutex = keymutex.NewKeyMutex()
|
|
// serializes operations based on "snapshot id" as key
|
|
snapshotIDMutex = keymutex.NewKeyMutex()
|
|
// serializes operations based on "mount target path" as key
|
|
targetPathMutex = keymutex.NewKeyMutex()
|
|
|
|
supportedFeatures = sets.NewString("layering")
|
|
)
|
|
|
|
func getRBDKey(id string, credentials map[string]string) (string, error) {
|
|
|
|
if key, ok := credentials[id]; ok {
|
|
return key, nil
|
|
}
|
|
return "", fmt.Errorf("RBD key for ID: %s not found", id)
|
|
}
|
|
|
|
func getMon(pOpts *rbdVolume, credentials map[string]string) (string, error) {
|
|
mon := pOpts.Monitors
|
|
if len(mon) == 0 {
|
|
// if mons are set in secret, retrieve them
|
|
if len(pOpts.MonValueFromSecret) == 0 {
|
|
// yet another sanity check
|
|
return "", fmt.Errorf("either monitors or monValueFromSecret must be set")
|
|
}
|
|
if val, ok := credentials[pOpts.MonValueFromSecret]; !ok {
|
|
return "", fmt.Errorf("mon data %s is not set in secret", pOpts.MonValueFromSecret)
|
|
} else {
|
|
mon = val
|
|
}
|
|
}
|
|
return mon, nil
|
|
}
|
|
|
|
// CreateImage creates a new ceph image with provision and volume options.
|
|
func createRBDImage(pOpts *rbdVolume, volSz int, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
|
|
mon, err := getMon(pOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
image := pOpts.VolName
|
|
volSzGB := fmt.Sprintf("%dG", volSz)
|
|
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if pOpts.ImageFormat == rbdImageFormat2 {
|
|
glog.V(4).Infof("rbd: create %s size %s format %s (features: %s) using mon %s, pool %s id %s key %s", image, volSzGB, pOpts.ImageFormat, pOpts.ImageFeatures, mon, pOpts.Pool, adminId, key)
|
|
} else {
|
|
glog.V(4).Infof("rbd: create %s size %s format %s using mon %s, pool %s id %s key %s", image, volSzGB, pOpts.ImageFormat, mon, pOpts.Pool, adminId, key)
|
|
}
|
|
args := []string{"create", image, "--size", volSzGB, "--pool", pOpts.Pool, "--id", adminId, "-m", mon, "--key=" + key, "--image-format", pOpts.ImageFormat}
|
|
if pOpts.ImageFormat == rbdImageFormat2 {
|
|
args = append(args, "--image-feature", pOpts.ImageFeatures)
|
|
}
|
|
output, err = execCommand("rbd", args)
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to create rbd image, command output: %s", string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// rbdStatus checks if there is watcher on the image.
|
|
// It returns true if there is a watcher onthe image, otherwise returns false.
|
|
func rbdStatus(pOpts *rbdVolume, userId string, credentials map[string]string) (bool, string, error) {
|
|
var output string
|
|
var cmd []byte
|
|
|
|
image := pOpts.VolName
|
|
// If we don't have admin id/secret (e.g. attaching), fallback to user id/secret.
|
|
|
|
key, err := getRBDKey(userId, credentials)
|
|
if err != nil {
|
|
return false, "", err
|
|
}
|
|
|
|
mon, err := getMon(pOpts, credentials)
|
|
if err != nil {
|
|
return false, "", err
|
|
}
|
|
|
|
glog.V(4).Infof("rbd: status %s using mon %s, pool %s id %s key %s", image, mon, pOpts.Pool, userId, key)
|
|
args := []string{"status", image, "--pool", pOpts.Pool, "-m", mon, "--id", userId, "--key=" + key}
|
|
cmd, err = execCommand("rbd", args)
|
|
output = string(cmd)
|
|
|
|
if err, ok := err.(*exec.Error); ok {
|
|
if err.Err == exec.ErrNotFound {
|
|
glog.Errorf("rbd cmd not found")
|
|
// fail fast if command not found
|
|
return false, output, err
|
|
}
|
|
}
|
|
|
|
// If command never succeed, returns its last error.
|
|
if err != nil {
|
|
return false, output, err
|
|
}
|
|
|
|
if strings.Contains(output, imageWatcherStr) {
|
|
glog.V(4).Infof("rbd: watchers on %s: %s", image, output)
|
|
return true, output, nil
|
|
} else {
|
|
glog.Warningf("rbd: no watchers on %s", image)
|
|
return false, output, nil
|
|
}
|
|
}
|
|
|
|
// DeleteImage deletes a ceph image with provision and volume options.
|
|
func deleteRBDImage(pOpts *rbdVolume, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
image := pOpts.VolName
|
|
found, _, err := rbdStatus(pOpts, adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if found {
|
|
glog.Info("rbd is still being used ", image)
|
|
return fmt.Errorf("rbd %s is still being used", image)
|
|
}
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
mon, err := getMon(pOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
glog.V(4).Infof("rbd: rm %s using mon %s, pool %s id %s key %s", image, mon, pOpts.Pool, adminId, key)
|
|
args := []string{"rm", image, "--pool", pOpts.Pool, "--id", adminId, "-m", mon, "--key=" + key}
|
|
output, err = execCommand("rbd", args)
|
|
if err == nil {
|
|
return nil
|
|
}
|
|
glog.Errorf("failed to delete rbd image: %v, command output: %s", err, string(output))
|
|
return err
|
|
}
|
|
|
|
func execCommand(command string, args []string) ([]byte, error) {
|
|
cmd := exec.Command(command, args...)
|
|
return cmd.CombinedOutput()
|
|
}
|
|
|
|
func getRBDVolumeOptions(volOptions map[string]string) (*rbdVolume, error) {
|
|
var ok bool
|
|
rbdVol := &rbdVolume{}
|
|
rbdVol.Pool, ok = volOptions["pool"]
|
|
if !ok {
|
|
return nil, fmt.Errorf("Missing required parameter pool")
|
|
}
|
|
rbdVol.Monitors, ok = volOptions["monitors"]
|
|
if !ok {
|
|
// if mons are not set in options, check if they are set in secret
|
|
if rbdVol.MonValueFromSecret, ok = volOptions["monValueFromSecret"]; !ok {
|
|
return nil, fmt.Errorf("Either monitors or monValueFromSecret must be set")
|
|
}
|
|
}
|
|
rbdVol.ImageFormat, ok = volOptions["imageFormat"]
|
|
if !ok {
|
|
rbdVol.ImageFormat = rbdImageFormat2
|
|
}
|
|
if rbdVol.ImageFormat == rbdImageFormat2 {
|
|
// if no image features is provided, it results in empty string
|
|
// which disable all RBD image format 2 features as we expected
|
|
imageFeatures, ok := volOptions["imageFeatures"]
|
|
if ok {
|
|
arr := strings.Split(imageFeatures, ",")
|
|
for _, f := range arr {
|
|
if !supportedFeatures.Has(f) {
|
|
return nil, fmt.Errorf("invalid feature %q for volume csi-rbdplugin, supported features are: %v", f, supportedFeatures)
|
|
}
|
|
}
|
|
rbdVol.ImageFeatures = imageFeatures
|
|
}
|
|
|
|
}
|
|
rbdVol.AdminId, ok = volOptions["adminid"]
|
|
if !ok {
|
|
rbdVol.AdminId = rbdDefaultAdminId
|
|
}
|
|
rbdVol.UserId, ok = volOptions["userid"]
|
|
if !ok {
|
|
rbdVol.UserId = rbdDefaultUserId
|
|
}
|
|
rbdVol.Mounter, ok = volOptions["mounter"]
|
|
if !ok {
|
|
rbdVol.Mounter = rbdDefaultMounter
|
|
}
|
|
return rbdVol, nil
|
|
}
|
|
|
|
func getRBDSnapshotOptions(snapOptions map[string]string) (*rbdSnapshot, error) {
|
|
var ok bool
|
|
rbdSnap := &rbdSnapshot{}
|
|
rbdSnap.Pool, ok = snapOptions["pool"]
|
|
if !ok {
|
|
return nil, fmt.Errorf("Missing required parameter pool")
|
|
}
|
|
rbdSnap.Monitors, ok = snapOptions["monitors"]
|
|
if !ok {
|
|
// if mons are not set in options, check if they are set in secret
|
|
if rbdSnap.MonValueFromSecret, ok = snapOptions["monValueFromSecret"]; !ok {
|
|
return nil, fmt.Errorf("Either monitors or monValueFromSecret must be set")
|
|
}
|
|
}
|
|
rbdSnap.AdminId, ok = snapOptions["adminid"]
|
|
if !ok {
|
|
rbdSnap.AdminId = rbdDefaultAdminId
|
|
}
|
|
rbdSnap.UserId, ok = snapOptions["userid"]
|
|
if !ok {
|
|
rbdSnap.UserId = rbdDefaultUserId
|
|
}
|
|
|
|
return rbdSnap, nil
|
|
}
|
|
|
|
func hasSnapshotFeature(imageFeatures string) bool {
|
|
arr := strings.Split(imageFeatures, ",")
|
|
for _, f := range arr {
|
|
if f == "layering" {
|
|
return true
|
|
}
|
|
}
|
|
return false
|
|
}
|
|
|
|
func getRBDVolumeByID(volumeID string) (*rbdVolume, error) {
|
|
if rbdVol, ok := rbdVolumes[volumeID]; ok {
|
|
return rbdVol, nil
|
|
}
|
|
return nil, fmt.Errorf("volume id %s does not exit in the volumes list", volumeID)
|
|
}
|
|
|
|
func getRBDVolumeByName(volName string) (*rbdVolume, error) {
|
|
for _, rbdVol := range rbdVolumes {
|
|
if rbdVol.VolName == volName {
|
|
return rbdVol, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("volume name %s does not exit in the volumes list", volName)
|
|
}
|
|
|
|
func getRBDSnapshotByName(snapName string) (*rbdSnapshot, error) {
|
|
for _, rbdSnap := range rbdSnapshots {
|
|
if rbdSnap.SnapName == snapName {
|
|
return rbdSnap, nil
|
|
}
|
|
}
|
|
return nil, fmt.Errorf("snapshot name %s does not exit in the snapshots list", snapName)
|
|
}
|
|
|
|
func getSnapMon(pOpts *rbdSnapshot, credentials map[string]string) (string, error) {
|
|
mon := pOpts.Monitors
|
|
if len(mon) == 0 {
|
|
// if mons are set in secret, retrieve them
|
|
if len(pOpts.MonValueFromSecret) == 0 {
|
|
// yet another sanity check
|
|
return "", fmt.Errorf("either monitors or monValueFromSecret must be set")
|
|
}
|
|
if val, ok := credentials[pOpts.MonValueFromSecret]; !ok {
|
|
return "", fmt.Errorf("mon data %s is not set in secret", pOpts.MonValueFromSecret)
|
|
} else {
|
|
mon = val
|
|
}
|
|
}
|
|
return mon, nil
|
|
}
|
|
|
|
func protectSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
|
|
image := pOpts.VolName
|
|
snapID := pOpts.SnapID
|
|
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
mon, err := getSnapMon(pOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
glog.V(4).Infof("rbd: snap protect %s using mon %s, pool %s id %s key %s", image, mon, pOpts.Pool, adminId, key)
|
|
args := []string{"snap", "protect", "--pool", pOpts.Pool, "--snap", snapID, image, "--id", adminId, "-m", mon, "--key=" + key}
|
|
|
|
output, err = execCommand("rbd", args)
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to protect snapshot, command output: %s", string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func createSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
|
|
mon, err := getSnapMon(pOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
image := pOpts.VolName
|
|
snapID := pOpts.SnapID
|
|
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
glog.V(4).Infof("rbd: snap create %s using mon %s, pool %s id %s key %s", image, mon, pOpts.Pool, adminId, key)
|
|
args := []string{"snap", "create", "--pool", pOpts.Pool, "--snap", snapID, image, "--id", adminId, "-m", mon, "--key=" + key}
|
|
|
|
output, err = execCommand("rbd", args)
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to create snapshot, command output: %s", string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func unprotectSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
|
|
mon, err := getSnapMon(pOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
image := pOpts.VolName
|
|
snapID := pOpts.SnapID
|
|
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
glog.V(4).Infof("rbd: snap unprotect %s using mon %s, pool %s id %s key %s", image, mon, pOpts.Pool, adminId, key)
|
|
args := []string{"snap", "unprotect", "--pool", pOpts.Pool, "--snap", snapID, image, "--id", adminId, "-m", mon, "--key=" + key}
|
|
|
|
output, err = execCommand("rbd", args)
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to unprotect snapshot, command output: %s", string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func deleteSnapshot(pOpts *rbdSnapshot, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
|
|
mon, err := getSnapMon(pOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
image := pOpts.VolName
|
|
snapID := pOpts.SnapID
|
|
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
glog.V(4).Infof("rbd: snap rm %s using mon %s, pool %s id %s key %s", image, mon, pOpts.Pool, adminId, key)
|
|
args := []string{"snap", "rm", "--pool", pOpts.Pool, "--snap", snapID, image, "--id", adminId, "-m", mon, "--key=" + key}
|
|
|
|
output, err = execCommand("rbd", args)
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to delete snapshot, command output: %s", string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
func restoreSnapshot(pVolOpts *rbdVolume, pSnapOpts *rbdSnapshot, adminId string, credentials map[string]string) error {
|
|
var output []byte
|
|
|
|
mon, err := getMon(pVolOpts, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
image := pVolOpts.VolName
|
|
snapID := pSnapOpts.SnapID
|
|
|
|
key, err := getRBDKey(adminId, credentials)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
glog.V(4).Infof("rbd: clone %s using mon %s, pool %s id %s key %s", image, mon, pVolOpts.Pool, adminId, key)
|
|
args := []string{"clone", pSnapOpts.Pool + "/" + pSnapOpts.VolName + "@" + snapID, pVolOpts.Pool + "/" + image, "--id", adminId, "-m", mon, "--key=" + key}
|
|
|
|
output, err = execCommand("rbd", args)
|
|
|
|
if err != nil {
|
|
return errors.Wrapf(err, "failed to restore snapshot, command output: %s", string(output))
|
|
}
|
|
|
|
return nil
|
|
}
|