22d47a9212
- support Block Limits VPD page (0xB0) - add UNMAP to REPORT SUPPORTED OPERATION CODES - READ CAPACITY(16): set LBPME when Thin provisioning is enabled - move Thinprovisioning and BlockShift to config - add Unmap to BackingStore
81 lines
1.8 KiB
Go
81 lines
1.8 KiB
Go
/*
|
|
Copyright 2016 The GoStor Authors All rights reserved.
|
|
|
|
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 backingstore
|
|
|
|
import (
|
|
"github.com/gostor/gotgt/pkg/api"
|
|
"github.com/gostor/gotgt/pkg/scsi"
|
|
)
|
|
|
|
func init() {
|
|
scsi.RegisterBackingStore("null", newNull)
|
|
}
|
|
|
|
type NullBackingStore struct {
|
|
scsi.BaseBackingStore
|
|
}
|
|
|
|
func newNull() (api.BackingStore, error) {
|
|
return &NullBackingStore{
|
|
BaseBackingStore: scsi.BaseBackingStore{
|
|
Name: "null",
|
|
DataSize: 0,
|
|
OflagsSupported: 0,
|
|
},
|
|
}, nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Open(dev *api.SCSILu, path string) error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Close(dev *api.SCSILu) error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Init(dev *api.SCSILu, Opts string) error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Exit(dev *api.SCSILu) error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Size(dev *api.SCSILu) uint64 {
|
|
return 0
|
|
}
|
|
|
|
func (bs *NullBackingStore) Read(offset, tl int64) ([]byte, error) {
|
|
return nil, nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Write(wbuf []byte, offset int64) error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) DataSync() error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) DataAdvise(offset, length int64, advise uint32) error {
|
|
return nil
|
|
}
|
|
|
|
func (bs *NullBackingStore) Unmap() error {
|
|
return nil
|
|
}
|