mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-11-09 16:00:22 +00:00
f9ab14e826
A RBD image can only be part of a single group. While an image is added to a group, check if the image is already part of a group, and return an error in case it is. Signed-off-by: Niels de Vos <ndevos@ibm.com>
80 lines
2.3 KiB
Go
80 lines
2.3 KiB
Go
/*
|
|
Copyright 2024 The Ceph-CSI 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 (
|
|
"context"
|
|
"fmt"
|
|
|
|
librbd "github.com/ceph/go-ceph/rbd"
|
|
|
|
"github.com/ceph/ceph-csi/internal/rbd/types"
|
|
)
|
|
|
|
// AddToGroup adds the image to the group. This is called from the rbd_group
|
|
// package.
|
|
func (rv *rbdVolume) AddToGroup(ctx context.Context, vg types.VolumeGroup) error {
|
|
ioctx, err := vg.GetIOContext(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("could not get iocontext for volume group %q: %w", vg, err)
|
|
}
|
|
|
|
name, err := vg.GetName(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("could not get name for volume group %q: %w", vg, err)
|
|
}
|
|
|
|
// check if the image is already part of a group
|
|
// "rbd: ret=-17, File exists" is returned if the image is part of ANY group
|
|
image, err := rv.open()
|
|
if err != nil {
|
|
return fmt.Errorf("failed to open image %q: %w", rv, err)
|
|
}
|
|
|
|
info, err := image.GetGroup()
|
|
if err != nil {
|
|
return fmt.Errorf("could not get group information for image %q: %w", rv, err)
|
|
}
|
|
|
|
if info.Name != "" && info.Name != name {
|
|
return fmt.Errorf("image %q is already part of volume group %q", rv, info.Name)
|
|
}
|
|
|
|
err = librbd.GroupImageAdd(ioctx, name, rv.ioctx, rv.RbdImageName)
|
|
if err != nil {
|
|
return fmt.Errorf("failed to add image %q to volume group %q: %w", rv, vg, err)
|
|
}
|
|
|
|
return nil
|
|
}
|
|
|
|
// RemoveFromGroup removes the image from the group. This is called from the
|
|
// rbd_group package.
|
|
func (rv *rbdVolume) RemoveFromGroup(ctx context.Context, vg types.VolumeGroup) error {
|
|
ioctx, err := vg.GetIOContext(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("could not get iocontext for volume group %q: %w", vg, err)
|
|
}
|
|
|
|
name, err := vg.GetName(ctx)
|
|
if err != nil {
|
|
return fmt.Errorf("could not get name for volume group %q: %w", vg, err)
|
|
}
|
|
|
|
return librbd.GroupImageRemove(ioctx, name, rv.ioctx, rv.RbdImageName)
|
|
}
|