mirror of
https://github.com/ceph/ceph-csi.git
synced 2024-12-13 00:20:19 +00:00
32d78c4f7f
Updating go-ceph to v0.8.0. Signed-off-by: Mudit Agarwal <muagarwa@redhat.com>
236 lines
6.9 KiB
Go
236 lines
6.9 KiB
Go
// +build !nautilus
|
|
|
|
// Initially, we're only providing mirroring related functions for octopus as
|
|
// that version of ceph deprecated a number of the functions in nautilus. If
|
|
// you need mirroring on an earlier supported version of ceph please file an
|
|
// issue in our tracker.
|
|
|
|
package rbd
|
|
|
|
// #cgo LDFLAGS: -lrbd
|
|
// #include <stdlib.h>
|
|
// #include <rbd/librbd.h>
|
|
import "C"
|
|
|
|
import (
|
|
"unsafe"
|
|
|
|
"github.com/ceph/go-ceph/internal/retry"
|
|
"github.com/ceph/go-ceph/rados"
|
|
)
|
|
|
|
// MirrorMode is used to indicate an approach used for RBD mirroring.
|
|
type MirrorMode int64
|
|
|
|
const (
|
|
// MirrorModeDisabled disables mirroring.
|
|
MirrorModeDisabled = MirrorMode(C.RBD_MIRROR_MODE_DISABLED)
|
|
// MirrorModeImage enables mirroring on a per-image basis.
|
|
MirrorModeImage = MirrorMode(C.RBD_MIRROR_MODE_IMAGE)
|
|
// MirrorModePool enables mirroring on all journaled images.
|
|
MirrorModePool = MirrorMode(C.RBD_MIRROR_MODE_POOL)
|
|
)
|
|
|
|
// ImageMirrorMode is used to indicate the mirroring approach for an RBD image.
|
|
type ImageMirrorMode int64
|
|
|
|
const (
|
|
// ImageMirrorModeJournal uses journaling to propagate RBD images between
|
|
// ceph clusters.
|
|
ImageMirrorModeJournal = ImageMirrorMode(C.RBD_MIRROR_IMAGE_MODE_JOURNAL)
|
|
// ImageMirrorModeSnapshot uses snapshots to propagate RBD images between
|
|
// ceph clusters.
|
|
ImageMirrorModeSnapshot = ImageMirrorMode(C.RBD_MIRROR_IMAGE_MODE_SNAPSHOT)
|
|
)
|
|
|
|
// SetMirrorMode is used to enable or disable pool level mirroring with either
|
|
// an automatic or per-image behavior.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_mode_set(rados_ioctx_t io_ctx,
|
|
// rbd_mirror_mode_t mirror_mode);
|
|
func SetMirrorMode(ioctx *rados.IOContext, mode MirrorMode) error {
|
|
ret := C.rbd_mirror_mode_set(
|
|
cephIoctx(ioctx),
|
|
C.rbd_mirror_mode_t(mode))
|
|
return getError(ret)
|
|
}
|
|
|
|
// GetMirrorMode is used to fetch the current mirroring mode for a pool.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_mode_get(rados_ioctx_t io_ctx,
|
|
// rbd_mirror_mode_t *mirror_mode);
|
|
func GetMirrorMode(ioctx *rados.IOContext) (MirrorMode, error) {
|
|
var mode C.rbd_mirror_mode_t
|
|
|
|
ret := C.rbd_mirror_mode_get(
|
|
cephIoctx(ioctx),
|
|
&mode)
|
|
if err := getError(ret); err != nil {
|
|
return MirrorModeDisabled, err
|
|
}
|
|
return MirrorMode(mode), nil
|
|
}
|
|
|
|
// MirrorEnable will enable mirroring for an image using the specified mode.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_enable2(rbd_image_t image,
|
|
// rbd_mirror_image_mode_t mode);
|
|
func (image *Image) MirrorEnable(mode ImageMirrorMode) error {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return err
|
|
}
|
|
ret := C.rbd_mirror_image_enable2(image.image, C.rbd_mirror_image_mode_t(mode))
|
|
return getError(ret)
|
|
}
|
|
|
|
// MirrorDisable will disable mirroring for the image.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_disable(rbd_image_t image, bool force);
|
|
func (image *Image) MirrorDisable(force bool) error {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return err
|
|
}
|
|
ret := C.rbd_mirror_image_disable(image.image, C.bool(force))
|
|
return getError(ret)
|
|
}
|
|
|
|
// MirrorPromote will promote the image to primary status.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_promote(rbd_image_t image, bool force);
|
|
func (image *Image) MirrorPromote(force bool) error {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return err
|
|
}
|
|
ret := C.rbd_mirror_image_promote(image.image, C.bool(force))
|
|
return getError(ret)
|
|
}
|
|
|
|
// MirrorDemote will demote the image to secondary status.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_demote(rbd_image_t image);
|
|
func (image *Image) MirrorDemote() error {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return err
|
|
}
|
|
ret := C.rbd_mirror_image_demote(image.image)
|
|
return getError(ret)
|
|
}
|
|
|
|
// MirrorResync is used to manually resolve split-brain status by triggering
|
|
// resynchronization.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_resync(rbd_image_t image);
|
|
func (image *Image) MirrorResync() error {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return err
|
|
}
|
|
ret := C.rbd_mirror_image_resync(image.image)
|
|
return getError(ret)
|
|
}
|
|
|
|
// MirrorInstanceID returns a string naming the instance id for the image.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_get_instance_id(rbd_image_t image,
|
|
// char *instance_id,
|
|
// size_t *id_max_length);
|
|
func (image *Image) MirrorInstanceID() (string, error) {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return "", err
|
|
}
|
|
var (
|
|
err error
|
|
buf []byte
|
|
cSize C.size_t
|
|
)
|
|
retry.WithSizes(1024, 1<<16, func(size int) retry.Hint {
|
|
cSize = C.size_t(size)
|
|
buf = make([]byte, cSize)
|
|
ret := C.rbd_mirror_image_get_instance_id(
|
|
image.image,
|
|
(*C.char)(unsafe.Pointer(&buf[0])),
|
|
&cSize)
|
|
err = getErrorIfNegative(ret)
|
|
return retry.Size(int(cSize)).If(err == errRange)
|
|
})
|
|
if err != nil {
|
|
return "", err
|
|
}
|
|
return string(buf[:cSize]), nil
|
|
}
|
|
|
|
// MirrorImageState represents the mirroring state of a RBD image.
|
|
type MirrorImageState C.rbd_mirror_image_state_t
|
|
|
|
const (
|
|
// MirrorImageDisabling is the representation of
|
|
// RBD_MIRROR_IMAGE_DISABLING from librbd.
|
|
MirrorImageDisabling = MirrorImageState(C.RBD_MIRROR_IMAGE_DISABLING)
|
|
// MirrorImageEnabled is the representation of
|
|
// RBD_MIRROR_IMAGE_ENABLED from librbd.
|
|
MirrorImageEnabled = MirrorImageState(C.RBD_MIRROR_IMAGE_ENABLED)
|
|
// MirrorImageDisabled is the representation of
|
|
// RBD_MIRROR_IMAGE_DISABLED from librbd.
|
|
MirrorImageDisabled = MirrorImageState(C.RBD_MIRROR_IMAGE_DISABLED)
|
|
)
|
|
|
|
// MirrorImageInfo represents the mirroring status information of a RBD image.
|
|
type MirrorImageInfo struct {
|
|
GlobalID string
|
|
State MirrorImageState
|
|
Primary bool
|
|
}
|
|
|
|
// GetMirrorImageInfo fetches the mirroring status information of a RBD image.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_get_info(rbd_image_t image,
|
|
// rbd_mirror_image_info_t *mirror_image_info,
|
|
// size_t info_size)
|
|
func (image *Image) GetMirrorImageInfo() (*MirrorImageInfo, error) {
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
var cInfo C.rbd_mirror_image_info_t
|
|
|
|
ret := C.rbd_mirror_image_get_info(
|
|
image.image,
|
|
&cInfo,
|
|
C.sizeof_rbd_mirror_image_info_t)
|
|
if ret < 0 {
|
|
return nil, getError(ret)
|
|
}
|
|
|
|
mii := MirrorImageInfo{
|
|
GlobalID: C.GoString(cInfo.global_id),
|
|
State: MirrorImageState(cInfo.state),
|
|
Primary: bool(cInfo.primary),
|
|
}
|
|
|
|
// free C memory allocated by C.rbd_mirror_image_get_info call
|
|
C.rbd_mirror_image_get_info_cleanup(&cInfo)
|
|
return &mii, nil
|
|
}
|
|
|
|
// GetImageMirrorMode fetches the mirroring approach for an RBD image.
|
|
//
|
|
// Implements:
|
|
// int rbd_mirror_image_get_mode(rbd_image_t image, rbd_mirror_image_mode_t *mode);
|
|
func (image *Image) GetImageMirrorMode() (ImageMirrorMode, error) {
|
|
var mode C.rbd_mirror_image_mode_t
|
|
if err := image.validate(imageIsOpen); err != nil {
|
|
return ImageMirrorMode(mode), err
|
|
}
|
|
|
|
ret := C.rbd_mirror_image_get_mode(image.image, &mode)
|
|
return ImageMirrorMode(mode), getError(ret)
|
|
}
|