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https://github.com/k3s-io/k3s.git
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e8381db778
* Update Kubernetes to v1.21.0 * Update to golang v1.16.2 * Update dependent modules to track with upstream * Switch to upstream flannel * Track changes to upstream cloud-controller-manager and FeatureGates Signed-off-by: Brad Davidson <brad.davidson@rancher.com>
102 lines
3.1 KiB
Go
102 lines
3.1 KiB
Go
// +build linux
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/*
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Copyright 2021 The Kubernetes 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 mount
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import (
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"fmt"
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"k8s.io/klog/v2"
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utilexec "k8s.io/utils/exec"
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)
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// ResizeFs Provides support for resizing file systems
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type ResizeFs struct {
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exec utilexec.Interface
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}
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// NewResizeFs returns new instance of resizer
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func NewResizeFs(exec utilexec.Interface) *ResizeFs {
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return &ResizeFs{exec: exec}
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}
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// Resize perform resize of file system
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func (resizefs *ResizeFs) Resize(devicePath string, deviceMountPath string) (bool, error) {
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format, err := getDiskFormat(resizefs.exec, devicePath)
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if err != nil {
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formatErr := fmt.Errorf("ResizeFS.Resize - error checking format for device %s: %v", devicePath, err)
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return false, formatErr
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}
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// If disk has no format, there is no need to resize the disk because mkfs.*
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// by default will use whole disk anyways.
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if format == "" {
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return false, nil
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}
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klog.V(3).Infof("ResizeFS.Resize - Expanding mounted volume %s", devicePath)
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switch format {
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case "ext3", "ext4":
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return resizefs.extResize(devicePath)
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case "xfs":
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return resizefs.xfsResize(deviceMountPath)
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case "btrfs":
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return resizefs.btrfsResize(deviceMountPath)
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}
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return false, fmt.Errorf("ResizeFS.Resize - resize of format %s is not supported for device %s mounted at %s", format, devicePath, deviceMountPath)
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}
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func (resizefs *ResizeFs) extResize(devicePath string) (bool, error) {
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output, err := resizefs.exec.Command("resize2fs", devicePath).CombinedOutput()
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if err == nil {
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klog.V(2).Infof("Device %s resized successfully", devicePath)
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return true, nil
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}
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resizeError := fmt.Errorf("resize of device %s failed: %v. resize2fs output: %s", devicePath, err, string(output))
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return false, resizeError
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}
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func (resizefs *ResizeFs) xfsResize(deviceMountPath string) (bool, error) {
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args := []string{"-d", deviceMountPath}
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output, err := resizefs.exec.Command("xfs_growfs", args...).CombinedOutput()
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if err == nil {
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klog.V(2).Infof("Device %s resized successfully", deviceMountPath)
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return true, nil
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}
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resizeError := fmt.Errorf("resize of device %s failed: %v. xfs_growfs output: %s", deviceMountPath, err, string(output))
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return false, resizeError
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}
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func (resizefs *ResizeFs) btrfsResize(deviceMountPath string) (bool, error) {
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args := []string{"filesystem", "resize", "max", deviceMountPath}
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output, err := resizefs.exec.Command("btrfs", args...).CombinedOutput()
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if err == nil {
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klog.V(2).Infof("Device %s resized successfully", deviceMountPath)
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return true, nil
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}
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resizeError := fmt.Errorf("resize of device %s failed: %v. btrfs output: %s", deviceMountPath, err, string(output))
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return false, resizeError
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}
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