d3aa7ee9f0
The new `go fmt` adds `//go:build` lines (https://golang.org/doc/go1.17#tools). Signed-off-by: Akihiro Suda <akihiro.suda.cz@hco.ntt.co.jp>
112 lines
3.0 KiB
Go
112 lines
3.0 KiB
Go
//go:build linux
|
|
// +build linux
|
|
|
|
/*
|
|
Copyright The containerd 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 devmapper
|
|
|
|
import (
|
|
"fmt"
|
|
)
|
|
|
|
const (
|
|
maxDeviceID = 0xffffff // Device IDs are 24-bit numbers
|
|
)
|
|
|
|
// DeviceState represents current devmapper device state reflected in meta store
|
|
type DeviceState int
|
|
|
|
const (
|
|
// Unknown means that device just allocated and no operations were performed
|
|
Unknown DeviceState = iota
|
|
// Creating means that device is going to be created
|
|
Creating
|
|
// Created means that devices successfully created
|
|
Created
|
|
// Activating means that device is going to be activated
|
|
Activating
|
|
// Activated means that device successfully activated
|
|
Activated
|
|
// Suspending means that device is going to be suspended
|
|
Suspending
|
|
// Suspended means that device successfully suspended
|
|
Suspended
|
|
// Resuming means that device is going to be resumed from suspended state
|
|
Resuming
|
|
// Resumed means that device successfully resumed
|
|
Resumed
|
|
// Deactivating means that device is going to be deactivated
|
|
Deactivating
|
|
// Deactivated means that device successfully deactivated
|
|
Deactivated
|
|
// Removing means that device is going to be removed
|
|
Removing
|
|
// Removed means that device successfully removed but not yet deleted from meta store
|
|
Removed
|
|
// Faulty means that the device is errored and the snapshotter failed to rollback it
|
|
Faulty
|
|
)
|
|
|
|
func (s DeviceState) String() string {
|
|
switch s {
|
|
case Creating:
|
|
return "Creating"
|
|
case Created:
|
|
return "Created"
|
|
case Activating:
|
|
return "Activating"
|
|
case Activated:
|
|
return "Activated"
|
|
case Suspending:
|
|
return "Suspending"
|
|
case Suspended:
|
|
return "Suspended"
|
|
case Resuming:
|
|
return "Resuming"
|
|
case Resumed:
|
|
return "Resumed"
|
|
case Deactivating:
|
|
return "Deactivating"
|
|
case Deactivated:
|
|
return "Deactivated"
|
|
case Removing:
|
|
return "Removing"
|
|
case Removed:
|
|
return "Removed"
|
|
case Faulty:
|
|
return "Faulty"
|
|
default:
|
|
return fmt.Sprintf("unknown %d", s)
|
|
}
|
|
}
|
|
|
|
// DeviceInfo represents metadata for thin device within thin-pool
|
|
type DeviceInfo struct {
|
|
// DeviceID is a 24-bit number assigned to a device within thin-pool device
|
|
DeviceID uint32 `json:"device_id"`
|
|
// Size is a thin device size
|
|
Size uint64 `json:"size"`
|
|
// Name is a device name to be used in /dev/mapper/
|
|
Name string `json:"name"`
|
|
// ParentName is a name of parent device (if snapshot)
|
|
ParentName string `json:"parent_name"`
|
|
// State represents current device state
|
|
State DeviceState `json:"state"`
|
|
// Error details if device state change failed
|
|
Error string `json:"error"`
|
|
}
|