mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-27 16:50:23 +00:00
298 lines
9.8 KiB
Go
298 lines
9.8 KiB
Go
//go:build linux
|
|
// +build linux
|
|
|
|
/*
|
|
Copyright 2021 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 mount
|
|
|
|
import (
|
|
"fmt"
|
|
"strconv"
|
|
"strings"
|
|
|
|
"k8s.io/klog/v2"
|
|
utilexec "k8s.io/utils/exec"
|
|
)
|
|
|
|
const (
|
|
blockDev = "blockdev"
|
|
)
|
|
|
|
// ResizeFs Provides support for resizing file systems
|
|
type ResizeFs struct {
|
|
exec utilexec.Interface
|
|
}
|
|
|
|
// NewResizeFs returns new instance of resizer
|
|
func NewResizeFs(exec utilexec.Interface) *ResizeFs {
|
|
return &ResizeFs{exec: exec}
|
|
}
|
|
|
|
// Resize perform resize of file system
|
|
func (resizefs *ResizeFs) Resize(devicePath string, deviceMountPath string) (bool, error) {
|
|
format, err := getDiskFormat(resizefs.exec, devicePath)
|
|
|
|
if err != nil {
|
|
formatErr := fmt.Errorf("ResizeFS.Resize - error checking format for device %s: %v", devicePath, err)
|
|
return false, formatErr
|
|
}
|
|
|
|
// If disk has no format, there is no need to resize the disk because mkfs.*
|
|
// by default will use whole disk anyways.
|
|
if format == "" {
|
|
return false, nil
|
|
}
|
|
|
|
klog.V(3).Infof("ResizeFS.Resize - Expanding mounted volume %s", devicePath)
|
|
switch format {
|
|
case "ext3", "ext4":
|
|
return resizefs.extResize(devicePath)
|
|
case "xfs":
|
|
return resizefs.xfsResize(deviceMountPath)
|
|
case "btrfs":
|
|
return resizefs.btrfsResize(deviceMountPath)
|
|
}
|
|
return false, fmt.Errorf("ResizeFS.Resize - resize of format %s is not supported for device %s mounted at %s", format, devicePath, deviceMountPath)
|
|
}
|
|
|
|
func (resizefs *ResizeFs) extResize(devicePath string) (bool, error) {
|
|
output, err := resizefs.exec.Command("resize2fs", devicePath).CombinedOutput()
|
|
if err == nil {
|
|
klog.V(2).Infof("Device %s resized successfully", devicePath)
|
|
return true, nil
|
|
}
|
|
|
|
resizeError := fmt.Errorf("resize of device %s failed: %v. resize2fs output: %s", devicePath, err, string(output))
|
|
return false, resizeError
|
|
|
|
}
|
|
|
|
func (resizefs *ResizeFs) xfsResize(deviceMountPath string) (bool, error) {
|
|
args := []string{"-d", deviceMountPath}
|
|
output, err := resizefs.exec.Command("xfs_growfs", args...).CombinedOutput()
|
|
|
|
if err == nil {
|
|
klog.V(2).Infof("Device %s resized successfully", deviceMountPath)
|
|
return true, nil
|
|
}
|
|
|
|
resizeError := fmt.Errorf("resize of device %s failed: %v. xfs_growfs output: %s", deviceMountPath, err, string(output))
|
|
return false, resizeError
|
|
}
|
|
|
|
func (resizefs *ResizeFs) btrfsResize(deviceMountPath string) (bool, error) {
|
|
args := []string{"filesystem", "resize", "max", deviceMountPath}
|
|
output, err := resizefs.exec.Command("btrfs", args...).CombinedOutput()
|
|
|
|
if err == nil {
|
|
klog.V(2).Infof("Device %s resized successfully", deviceMountPath)
|
|
return true, nil
|
|
}
|
|
|
|
resizeError := fmt.Errorf("resize of device %s failed: %v. btrfs output: %s", deviceMountPath, err, string(output))
|
|
return false, resizeError
|
|
}
|
|
|
|
func (resizefs *ResizeFs) NeedResize(devicePath string, deviceMountPath string) (bool, error) {
|
|
// Do nothing if device is mounted as readonly
|
|
readonly, err := resizefs.getDeviceRO(devicePath)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
|
|
if readonly {
|
|
klog.V(3).Infof("ResizeFs.needResize - no resize possible since filesystem %s is readonly", devicePath)
|
|
return false, nil
|
|
}
|
|
|
|
deviceSize, err := resizefs.getDeviceSize(devicePath)
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
var fsSize, blockSize uint64
|
|
format, err := getDiskFormat(resizefs.exec, devicePath)
|
|
if err != nil {
|
|
formatErr := fmt.Errorf("ResizeFS.Resize - error checking format for device %s: %v", devicePath, err)
|
|
return false, formatErr
|
|
}
|
|
|
|
// If disk has no format, there is no need to resize the disk because mkfs.*
|
|
// by default will use whole disk anyways.
|
|
if format == "" {
|
|
return false, nil
|
|
}
|
|
|
|
klog.V(3).Infof("ResizeFs.needResize - checking mounted volume %s", devicePath)
|
|
switch format {
|
|
case "ext3", "ext4":
|
|
blockSize, fsSize, err = resizefs.getExtSize(devicePath)
|
|
klog.V(5).Infof("Ext size: filesystem size=%d, block size=%d", fsSize, blockSize)
|
|
case "xfs":
|
|
blockSize, fsSize, err = resizefs.getXFSSize(deviceMountPath)
|
|
klog.V(5).Infof("Xfs size: filesystem size=%d, block size=%d, err=%v", fsSize, blockSize, err)
|
|
case "btrfs":
|
|
blockSize, fsSize, err = resizefs.getBtrfsSize(devicePath)
|
|
klog.V(5).Infof("Btrfs size: filesystem size=%d, block size=%d, err=%v", fsSize, blockSize, err)
|
|
default:
|
|
klog.Errorf("Not able to parse given filesystem info. fsType: %s, will not resize", format)
|
|
return false, fmt.Errorf("Could not parse fs info on given filesystem format: %s. Supported fs types are: xfs, ext3, ext4", format)
|
|
}
|
|
if err != nil {
|
|
return false, err
|
|
}
|
|
// Tolerate one block difference, just in case of rounding errors somewhere.
|
|
klog.V(5).Infof("Volume %s: device size=%d, filesystem size=%d, block size=%d", devicePath, deviceSize, fsSize, blockSize)
|
|
if deviceSize <= fsSize+blockSize {
|
|
return false, nil
|
|
}
|
|
return true, nil
|
|
}
|
|
func (resizefs *ResizeFs) getDeviceSize(devicePath string) (uint64, error) {
|
|
output, err := resizefs.exec.Command(blockDev, "--getsize64", devicePath).CombinedOutput()
|
|
outStr := strings.TrimSpace(string(output))
|
|
if err != nil {
|
|
return 0, fmt.Errorf("failed to read size of device %s: %s: %s", devicePath, err, outStr)
|
|
}
|
|
size, err := strconv.ParseUint(outStr, 10, 64)
|
|
if err != nil {
|
|
return 0, fmt.Errorf("failed to parse size of device %s %s: %s", devicePath, outStr, err)
|
|
}
|
|
return size, nil
|
|
}
|
|
|
|
func (resizefs *ResizeFs) getDeviceRO(devicePath string) (bool, error) {
|
|
output, err := resizefs.exec.Command(blockDev, "--getro", devicePath).CombinedOutput()
|
|
outStr := strings.TrimSpace(string(output))
|
|
if err != nil {
|
|
return false, fmt.Errorf("failed to get readonly bit from device %s: %s: %s", devicePath, err, outStr)
|
|
}
|
|
switch outStr {
|
|
case "0":
|
|
return false, nil
|
|
case "1":
|
|
return true, nil
|
|
default:
|
|
return false, fmt.Errorf("Failed readonly device check. Expected 1 or 0, got '%s'", outStr)
|
|
}
|
|
}
|
|
|
|
func (resizefs *ResizeFs) getExtSize(devicePath string) (uint64, uint64, error) {
|
|
output, err := resizefs.exec.Command("dumpe2fs", "-h", devicePath).CombinedOutput()
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to read size of filesystem on %s: %s: %s", devicePath, err, string(output))
|
|
}
|
|
|
|
blockSize, blockCount, _ := resizefs.parseFsInfoOutput(string(output), ":", "block size", "block count")
|
|
|
|
if blockSize == 0 {
|
|
return 0, 0, fmt.Errorf("could not find block size of device %s", devicePath)
|
|
}
|
|
if blockCount == 0 {
|
|
return 0, 0, fmt.Errorf("could not find block count of device %s", devicePath)
|
|
}
|
|
return blockSize, blockSize * blockCount, nil
|
|
}
|
|
|
|
func (resizefs *ResizeFs) getXFSSize(devicePath string) (uint64, uint64, error) {
|
|
output, err := resizefs.exec.Command("xfs_io", "-c", "statfs", devicePath).CombinedOutput()
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to read size of filesystem on %s: %s: %s", devicePath, err, string(output))
|
|
}
|
|
|
|
blockSize, blockCount, _ := resizefs.parseFsInfoOutput(string(output), "=", "geom.bsize", "geom.datablocks")
|
|
|
|
if blockSize == 0 {
|
|
return 0, 0, fmt.Errorf("could not find block size of device %s", devicePath)
|
|
}
|
|
if blockCount == 0 {
|
|
return 0, 0, fmt.Errorf("could not find block count of device %s", devicePath)
|
|
}
|
|
return blockSize, blockSize * blockCount, nil
|
|
}
|
|
|
|
func (resizefs *ResizeFs) getBtrfsSize(devicePath string) (uint64, uint64, error) {
|
|
output, err := resizefs.exec.Command("btrfs", "inspect-internal", "dump-super", "-f", devicePath).CombinedOutput()
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to read size of filesystem on %s: %s: %s", devicePath, err, string(output))
|
|
}
|
|
|
|
blockSize, totalBytes, _ := resizefs.parseBtrfsInfoOutput(string(output), "sectorsize", "total_bytes")
|
|
|
|
if blockSize == 0 {
|
|
return 0, 0, fmt.Errorf("could not find block size of device %s", devicePath)
|
|
}
|
|
if totalBytes == 0 {
|
|
return 0, 0, fmt.Errorf("could not find total size of device %s", devicePath)
|
|
}
|
|
return blockSize, totalBytes, nil
|
|
}
|
|
|
|
func (resizefs *ResizeFs) parseBtrfsInfoOutput(cmdOutput string, blockSizeKey string, totalBytesKey string) (uint64, uint64, error) {
|
|
lines := strings.Split(cmdOutput, "\n")
|
|
var blockSize, blockCount uint64
|
|
var err error
|
|
|
|
for _, line := range lines {
|
|
tokens := strings.Fields(line)
|
|
if len(tokens) != 2 {
|
|
continue
|
|
}
|
|
key, value := strings.ToLower(strings.TrimSpace(tokens[0])), strings.ToLower(strings.TrimSpace(tokens[1]))
|
|
|
|
if key == blockSizeKey {
|
|
blockSize, err = strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to parse block size %s: %s", value, err)
|
|
}
|
|
}
|
|
if key == totalBytesKey {
|
|
blockCount, err = strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to parse total size %s: %s", value, err)
|
|
}
|
|
}
|
|
}
|
|
return blockSize, blockCount, err
|
|
}
|
|
|
|
func (resizefs *ResizeFs) parseFsInfoOutput(cmdOutput string, spliter string, blockSizeKey string, blockCountKey string) (uint64, uint64, error) {
|
|
lines := strings.Split(cmdOutput, "\n")
|
|
var blockSize, blockCount uint64
|
|
var err error
|
|
|
|
for _, line := range lines {
|
|
tokens := strings.Split(line, spliter)
|
|
if len(tokens) != 2 {
|
|
continue
|
|
}
|
|
key, value := strings.ToLower(strings.TrimSpace(tokens[0])), strings.ToLower(strings.TrimSpace(tokens[1]))
|
|
if key == blockSizeKey {
|
|
blockSize, err = strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to parse block size %s: %s", value, err)
|
|
}
|
|
}
|
|
if key == blockCountKey {
|
|
blockCount, err = strconv.ParseUint(value, 10, 64)
|
|
if err != nil {
|
|
return 0, 0, fmt.Errorf("failed to parse block count %s: %s", value, err)
|
|
}
|
|
}
|
|
}
|
|
return blockSize, blockCount, err
|
|
}
|