mirror of
https://github.com/TECHNOFAB11/zfs-localpv.git
synced 2025-12-12 06:20:11 +01:00
43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
/*
|
|
Copyright 2020 The OpenEBS 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 zfs
|
|
|
|
import (
|
|
"os/exec"
|
|
|
|
"k8s.io/klog"
|
|
)
|
|
|
|
/*
|
|
* We have to generate a new UUID for the cloned volumes with btrfs filesystem
|
|
* otherwise system will mount the same volume if UUID is same. Here, since cloned
|
|
* volume refers to the same block because of the way ZFS clone works, it will
|
|
* also have the same UUID.
|
|
*/
|
|
func btrfsGenerateUUID(volume string) error {
|
|
device := ZFSDevPath + volume
|
|
|
|
// for mounting the cloned volume for btrfs, a new UUID has to be generated
|
|
cmd := exec.Command("btrfstune", "-f", "-u", device)
|
|
out, err := cmd.CombinedOutput()
|
|
if err != nil {
|
|
klog.Errorf("btrfs: uuid generate failed %s error: %s", volume, string(out))
|
|
return err
|
|
}
|
|
klog.Infof("btrfs: generated UUID for the cloned volume %s \n %v", volume, string(out))
|
|
return nil
|
|
}
|