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rebase: use go-ceph v0.3.0

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v0.3.0 adds support for rbd.FeatureSet that can be used to parse the
features of an RBD image. This will be used in the followup commit that
adds rbdVolume.getImageInfo().

Signed-off-by: Niels de Vos <ndevos@redhat.com>
This commit is contained in:
Niels de Vos
2020-05-08 16:07:31 +02:00
committed by mergify[bot]
parent 323cc0e3bb
commit 772d1dfa77
23 changed files with 990 additions and 375 deletions

309
vendor/github.com/ceph/go-ceph/rbd/rbd.go generated vendored

@ -8,50 +8,27 @@ package rbd
// #include <stdlib.h>
// #include <rados/librados.h>
// #include <rbd/librbd.h>
// #include <rbd/features.h>
import "C"
import (
"bytes"
"errors"
"fmt"
"io"
"time"
"unsafe"
"github.com/ceph/go-ceph/errutil"
"github.com/ceph/go-ceph/rados"
)
const (
// RBD features.
RbdFeatureLayering = uint64(C.RBD_FEATURE_LAYERING)
RbdFeatureStripingV2 = uint64(C.RBD_FEATURE_STRIPINGV2)
RbdFeatureExclusiveLock = uint64(C.RBD_FEATURE_EXCLUSIVE_LOCK)
RbdFeatureObjectMap = uint64(C.RBD_FEATURE_OBJECT_MAP)
RbdFeatureFastDiff = uint64(C.RBD_FEATURE_FAST_DIFF)
RbdFeatureDeepFlatten = uint64(C.RBD_FEATURE_DEEP_FLATTEN)
RbdFeatureJournaling = uint64(C.RBD_FEATURE_JOURNALING)
RbdFeatureDataPool = uint64(C.RBD_FEATURE_DATA_POOL)
// Image.Seek() constants:
RbdFeaturesDefault = uint64(C.RBD_FEATURES_DEFAULT)
// Features that make an image inaccessible for read or write by clients that don't understand
// them.
RbdFeaturesIncompatible = uint64(C.RBD_FEATURES_INCOMPATIBLE)
// Features that make an image unwritable by clients that don't understand them.
RbdFeaturesRwIncompatible = uint64(C.RBD_FEATURES_RW_INCOMPATIBLE)
// Features that may be dynamically enabled or disabled.
RbdFeaturesMutable = uint64(C.RBD_FEATURES_MUTABLE)
// Features that only work when used with a single client using the image for writes.
RbdFeaturesSingleClient = uint64(C.RBD_FEATURES_SINGLE_CLIENT)
// Image.Seek() constants
// SeekSet is used with Seek to absolutely position the file.
SeekSet = int(C.SEEK_SET)
// SeekCur is used with Seek to position the file relatively to the current
// position.
SeekCur = int(C.SEEK_CUR)
// SeekEnd is used with Seek to position the file relatively to the end.
SeekEnd = int(C.SEEK_END)
)
@ -66,22 +43,7 @@ const (
NoSnapshot = ""
)
//
type RBDError int
var (
ErrNoIOContext = errors.New("RBD image does not have an IOContext")
ErrNoName = errors.New("RBD image does not have a name")
ErrSnapshotNoName = errors.New("RBD snapshot does not have a name")
ErrImageNotOpen = errors.New("RBD image not open")
ErrNotFound = errors.New("RBD image not found")
// retained for compatibility with old versions
RbdErrorImageNotOpen = ErrImageNotOpen
RbdErrorNotFound = ErrNotFound
)
//
// ImageInfo represents the status information for an image.
type ImageInfo struct {
Size uint64
Obj_size uint64
@ -92,21 +54,21 @@ type ImageInfo struct {
Parent_name string
}
//
// SnapInfo represents the status information for a snapshot.
type SnapInfo struct {
Id uint64
Size uint64
Name string
}
//
// Locker provides info about a client that is locking an image.
type Locker struct {
Client string
Cookie string
Addr string
}
//
// Image is a handle for an RBD image.
type Image struct {
io.Reader
io.Writer
@ -119,12 +81,6 @@ type Image struct {
image C.rbd_image_t
}
//
type Snapshot struct {
image *Image
name string
}
// TrashInfo contains information about trashed RBDs.
type TrashInfo struct {
Id string // Id string, required to remove / restore trashed RBDs.
@ -145,6 +101,11 @@ func split(buf []byte) (values []string) {
return values
}
// cephIoctx returns a ceph rados_ioctx_t given a go-ceph rados IOContext.
func cephIoctx(radosIoctx *rados.IOContext) C.rados_ioctx_t {
return C.rados_ioctx_t(radosIoctx.Pointer())
}
// test if a bit is set in the given value
func hasBit(value, bit uint32) bool {
return (value & bit) == bit
@ -164,38 +125,6 @@ func (image *Image) validate(req uint32) error {
return nil
}
// validate the attributes listed in the req bitmask, and return an error in
// case the attribute is not set
// Calls snapshot.image.validate(req) to validate the image attributes.
func (snapshot *Snapshot) validate(req uint32) error {
if hasBit(req, snapshotNeedsName) && snapshot.name == "" {
return ErrSnapshotNoName
} else if snapshot.image != nil {
return snapshot.image.validate(req)
}
return nil
}
func (e RBDError) Error() string {
errno, s := errutil.FormatErrno(int(e))
if s == "" {
return fmt.Sprintf("rbd: ret=%d", errno)
}
return fmt.Sprintf("rbd: ret=%d, %s", errno, s)
}
func getError(err C.int) error {
if err != 0 {
if err == -C.ENOENT {
return ErrNotFound
}
return RBDError(err)
} else {
return nil
}
}
// Version returns the major, minor, and patch level of the librbd library.
func Version() (int, int, int) {
var c_major, c_minor, c_patch C.int
@ -238,7 +167,7 @@ func Create(ioctx *rados.IOContext, name string, size uint64, order int,
defer C.free(unsafe.Pointer(c_name))
ret = C.rbd_create(C.rados_ioctx_t(ioctx.Pointer()),
ret = C.rbd_create(cephIoctx(ioctx),
c_name, C.uint64_t(size), &c_order)
default:
return nil, errors.New("Wrong number of argument")
@ -268,7 +197,7 @@ func Create2(ioctx *rados.IOContext, name string, size uint64, features uint64,
defer C.free(unsafe.Pointer(c_name))
ret = C.rbd_create2(C.rados_ioctx_t(ioctx.Pointer()), c_name,
ret = C.rbd_create2(cephIoctx(ioctx), c_name,
C.uint64_t(size), C.uint64_t(features), &c_order)
if ret < 0 {
return nil, RBDError(ret)
@ -296,7 +225,7 @@ func Create3(ioctx *rados.IOContext, name string, size uint64, features uint64,
defer C.free(unsafe.Pointer(c_name))
ret = C.rbd_create3(C.rados_ioctx_t(ioctx.Pointer()), c_name,
ret = C.rbd_create3(cephIoctx(ioctx), c_name,
C.uint64_t(size), C.uint64_t(features), &c_order,
C.uint64_t(stripe_unit), C.uint64_t(stripe_count))
if ret < 0 {
@ -329,9 +258,9 @@ func (image *Image) Clone(snapname string, c_ioctx *rados.IOContext, c_name stri
defer C.free(unsafe.Pointer(c_p_snapname))
defer C.free(unsafe.Pointer(c_c_name))
ret := C.rbd_clone(C.rados_ioctx_t(image.ioctx.Pointer()),
ret := C.rbd_clone(cephIoctx(image.ioctx),
c_p_name, c_p_snapname,
C.rados_ioctx_t(c_ioctx.Pointer()),
cephIoctx(c_ioctx),
c_c_name, C.uint64_t(features), &c_order)
if ret < 0 {
return nil, RBDError(ret)
@ -364,7 +293,7 @@ func (image *Image) Trash(delay time.Duration) error {
c_name := C.CString(image.name)
defer C.free(unsafe.Pointer(c_name))
return getError(C.rbd_trash_move(C.rados_ioctx_t(image.ioctx.Pointer()), c_name,
return getError(C.rbd_trash_move(cephIoctx(image.ioctx), c_name,
C.uint64_t(delay.Seconds())))
}
@ -383,7 +312,7 @@ func (image *Image) Rename(destname string) error {
defer C.free(unsafe.Pointer(c_srcname))
defer C.free(unsafe.Pointer(c_destname))
err := RBDError(C.rbd_rename(C.rados_ioctx_t(image.ioctx.Pointer()),
err := RBDError(C.rbd_rename(cephIoctx(image.ioctx),
c_srcname, c_destname))
if err == 0 {
image.name = destname
@ -523,22 +452,6 @@ func (image *Image) GetSize() (size uint64, err error) {
return size, nil
}
// GetFeatures returns the features bitmask for the rbd image.
//
// Implements:
// int rbd_get_features(rbd_image_t image, uint64_t *features);
func (image *Image) GetFeatures() (features uint64, err error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
}
if ret := C.rbd_get_features(image.image, (*C.uint64_t)(&features)); ret < 0 {
return 0, RBDError(ret)
}
return features, nil
}
// GetStripeUnit returns the stripe-unit value for the rbd image.
//
// Implements:
@ -605,10 +518,10 @@ func (image *Image) Copy(ioctx *rados.IOContext, destname string) error {
defer C.free(unsafe.Pointer(c_destname))
return getError(C.rbd_copy(image.image,
C.rados_ioctx_t(ioctx.Pointer()), c_destname))
cephIoctx(ioctx), c_destname))
}
// Copy one rbd image to another, using an image handle.
// Copy2 copies one rbd image to another, using an image handle.
//
// Implements:
// int rbd_copy2(rbd_image_t src, rbd_image_t dest);
@ -818,6 +731,7 @@ func (image *Image) Write(data []byte) (n int, err error) {
return ret, err
}
// Seek updates the internal file position for the current image.
func (image *Image) Seek(offset int64, whence int) (int64, error) {
switch whence {
case SeekSet:
@ -836,7 +750,12 @@ func (image *Image) Seek(offset int64, whence int) (int64, error) {
return image.offset, nil
}
// int rbd_discard(rbd_image_t image, uint64_t ofs, uint64_t len);
// Discard the supplied range from the image. The supplied range will be read
// as zeros once Discard returns. The discarded range will no longer take up
// space.
//
// Implements:
// int rbd_discard(rbd_image_t image, uint64_t ofs, uint64_t len);
func (image *Image) Discard(ofs uint64, length uint64) (int, error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
@ -850,6 +769,7 @@ func (image *Image) Discard(ofs uint64, length uint64) (int, error) {
return int(ret), nil
}
// ReadAt copies data from the image into the supplied buffer.
func (image *Image) ReadAt(data []byte, off int64) (int, error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
@ -876,6 +796,7 @@ func (image *Image) ReadAt(data []byte, off int64) (int, error) {
return ret, nil
}
// WriteAt copies data from the supplied buffer to the image.
func (image *Image) WriteAt(data []byte, off int64) (n int, err error) {
if err := image.validate(imageIsOpen); err != nil {
return 0, err
@ -895,7 +816,10 @@ func (image *Image) WriteAt(data []byte, off int64) (n int, err error) {
return ret, err
}
// int rbd_flush(rbd_image_t image);
// Flush all cached writes to storage.
//
// Implements:
// int rbd_flush(rbd_image_t image);
func (image *Image) Flush() error {
if err := image.validate(imageIsOpen); err != nil {
return err
@ -904,8 +828,11 @@ func (image *Image) Flush() error {
return getError(C.rbd_flush(image.image))
}
// int rbd_snap_list(rbd_image_t image, rbd_snap_info_t *snaps, int *max_snaps);
// void rbd_snap_list_end(rbd_snap_info_t *snaps);
// GetSnapshotNames returns more than just the names of snapshots
// associated with the rbd image.
//
// Implements:
// int rbd_snap_list(rbd_image_t image, rbd_snap_info_t *snaps, int *max_snaps);
func (image *Image) GetSnapshotNames() (snaps []SnapInfo, err error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
@ -934,35 +861,10 @@ func (image *Image) GetSnapshotNames() (snaps []SnapInfo, err error) {
return snaps[:len(snaps)-1], nil
}
// int rbd_snap_create(rbd_image_t image, const char *snapname);
func (image *Image) CreateSnapshot(snapname string) (*Snapshot, error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
}
c_snapname := C.CString(snapname)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_create(image.image, c_snapname)
if ret < 0 {
return nil, RBDError(ret)
}
return &Snapshot{
image: image,
name: snapname,
}, nil
}
// GetMetadata returns the metadata string associated with the given key.
//
func (image *Image) GetSnapshot(snapname string) *Snapshot {
return &Snapshot{
image: image,
name: snapname,
}
}
// int rbd_metadata_get(rbd_image_t image, const char *key, char *value, size_t *vallen)
// Implements:
// int rbd_metadata_get(rbd_image_t image, const char *key, char *value, size_t *vallen)
func (image *Image) GetMetadata(key string) (string, error) {
if err := image.validate(imageIsOpen); err != nil {
return "", err
@ -989,7 +891,10 @@ func (image *Image) GetMetadata(key string) (string, error) {
return string(value), nil
}
// int rbd_metadata_set(rbd_image_t image, const char *key, const char *value)
// SetMetadata updates the metadata string associated with the given key.
//
// Implements:
// int rbd_metadata_set(rbd_image_t image, const char *key, const char *value)
func (image *Image) SetMetadata(key string, value string) error {
if err := image.validate(imageIsOpen); err != nil {
return err
@ -1008,7 +913,10 @@ func (image *Image) SetMetadata(key string, value string) error {
return nil
}
// int rbd_metadata_remove(rbd_image_t image, const char *key)
// RemoveMetadata clears the metadata associated with the given key.
//
// Implements:
// int rbd_metadata_remove(rbd_image_t image, const char *key)
func (image *Image) RemoveMetadata(key string) error {
if err := image.validate(imageIsOpen); err != nil {
return err
@ -1051,103 +959,20 @@ func (image *Image) GetId() (string, error) {
}
}
// int rbd_snap_remove(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Remove() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_remove(snapshot.image.image, c_snapname))
}
// int rbd_snap_rollback(rbd_image_t image, const char *snapname);
// int rbd_snap_rollback_with_progress(rbd_image_t image, const char *snapname,
// librbd_progress_fn_t cb, void *cbdata);
func (snapshot *Snapshot) Rollback() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_rollback(snapshot.image.image, c_snapname))
}
// int rbd_snap_protect(rbd_image_t image, const char *snap_name);
func (snapshot *Snapshot) Protect() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_protect(snapshot.image.image, c_snapname))
}
// int rbd_snap_unprotect(rbd_image_t image, const char *snap_name);
func (snapshot *Snapshot) Unprotect() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_unprotect(snapshot.image.image, c_snapname))
}
// int rbd_snap_is_protected(rbd_image_t image, const char *snap_name,
// int *is_protected);
func (snapshot *Snapshot) IsProtected() (bool, error) {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return false, err
}
var c_is_protected C.int
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
ret := C.rbd_snap_is_protected(snapshot.image.image, c_snapname,
&c_is_protected)
if ret < 0 {
return false, RBDError(ret)
}
return c_is_protected != 0, nil
}
// int rbd_snap_set(rbd_image_t image, const char *snapname);
func (snapshot *Snapshot) Set() error {
if err := snapshot.validate(snapshotNeedsName | imageIsOpen); err != nil {
return err
}
c_snapname := C.CString(snapshot.name)
defer C.free(unsafe.Pointer(c_snapname))
return getError(C.rbd_snap_set(snapshot.image.image, c_snapname))
}
// GetTrashList returns a slice of TrashInfo structs, containing information about all RBD images
// currently residing in the trash.
func GetTrashList(ioctx *rados.IOContext) ([]TrashInfo, error) {
var num_entries C.size_t
// Call rbd_trash_list with nil pointer to get number of trash entries.
if C.rbd_trash_list(C.rados_ioctx_t(ioctx.Pointer()), nil, &num_entries); num_entries == 0 {
if C.rbd_trash_list(cephIoctx(ioctx), nil, &num_entries); num_entries == 0 {
return nil, nil
}
c_entries := make([]C.rbd_trash_image_info_t, num_entries)
trashList := make([]TrashInfo, num_entries)
if ret := C.rbd_trash_list(C.rados_ioctx_t(ioctx.Pointer()), &c_entries[0], &num_entries); ret < 0 {
if ret := C.rbd_trash_list(cephIoctx(ioctx), &c_entries[0], &num_entries); ret < 0 {
return nil, RBDError(ret)
}
@ -1171,7 +996,7 @@ func TrashRemove(ioctx *rados.IOContext, id string, force bool) error {
c_id := C.CString(id)
defer C.free(unsafe.Pointer(c_id))
return getError(C.rbd_trash_remove(C.rados_ioctx_t(ioctx.Pointer()), c_id, C.bool(force)))
return getError(C.rbd_trash_remove(cephIoctx(ioctx), c_id, C.bool(force)))
}
// TrashRestore restores the trashed RBD with the specified id back to the pool from whence it
@ -1182,7 +1007,7 @@ func TrashRestore(ioctx *rados.IOContext, id, name string) error {
defer C.free(unsafe.Pointer(c_id))
defer C.free(unsafe.Pointer(c_name))
return getError(C.rbd_trash_restore(C.rados_ioctx_t(ioctx.Pointer()), c_id, c_name))
return getError(C.rbd_trash_restore(cephIoctx(ioctx), c_id, c_name))
}
// OpenImage will open an existing rbd image by name and snapshot name,
@ -1204,7 +1029,7 @@ func OpenImage(ioctx *rados.IOContext, name, snapName string) (*Image, error) {
var cImage C.rbd_image_t
ret := C.rbd_open(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cName,
&cImage,
cSnapName)
@ -1240,7 +1065,7 @@ func OpenImageReadOnly(ioctx *rados.IOContext, name, snapName string) (*Image, e
var cImage C.rbd_image_t
ret := C.rbd_open_read_only(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cName,
&cImage,
cSnapName)
@ -1277,7 +1102,7 @@ func OpenImageById(ioctx *rados.IOContext, id, snapName string) (*Image, error)
var cImage C.rbd_image_t
ret := C.rbd_open_by_id(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cid,
&cImage,
cSnapName)
@ -1314,7 +1139,7 @@ func OpenImageByIdReadOnly(ioctx *rados.IOContext, id, snapName string) (*Image,
var cImage C.rbd_image_t
ret := C.rbd_open_by_id_read_only(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cid,
&cImage,
cSnapName)
@ -1334,7 +1159,7 @@ func OpenImageByIdReadOnly(ioctx *rados.IOContext, id, snapName string) (*Image,
// Implements:
// int rbd_create4(rados_ioctx_t io, const char *name, uint64_t size,
// rbd_image_options_t opts);
func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *RbdImageOptions) error {
func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *ImageOptions) error {
if rio == nil {
return RBDError(C.EINVAL)
@ -1343,7 +1168,7 @@ func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *RbdImage
c_name := C.CString(name)
defer C.free(unsafe.Pointer(c_name))
ret := C.rbd_create4(C.rados_ioctx_t(ioctx.Pointer()), c_name,
ret := C.rbd_create4(cephIoctx(ioctx), c_name,
C.uint64_t(size), C.rbd_image_options_t(rio.options))
return getError(ret)
}
@ -1355,7 +1180,7 @@ func CreateImage(ioctx *rados.IOContext, name string, size uint64, rio *RbdImage
func RemoveImage(ioctx *rados.IOContext, name string) error {
c_name := C.CString(name)
defer C.free(unsafe.Pointer(c_name))
return getError(C.rbd_remove(C.rados_ioctx_t(ioctx.Pointer()), c_name))
return getError(C.rbd_remove(cephIoctx(ioctx), c_name))
}
// CloneImage creates a clone of the image from the named snapshot in the
@ -1366,7 +1191,7 @@ func RemoveImage(ioctx *rados.IOContext, name string) error {
// const char *p_snapname, rados_ioctx_t c_ioctx,
// const char *c_name, rbd_image_options_t c_opts);
func CloneImage(ioctx *rados.IOContext, parentName, snapName string,
destctx *rados.IOContext, name string, rio *RbdImageOptions) error {
destctx *rados.IOContext, name string, rio *ImageOptions) error {
if rio == nil {
return RBDError(C.EINVAL)
@ -1380,10 +1205,10 @@ func CloneImage(ioctx *rados.IOContext, parentName, snapName string,
defer C.free(unsafe.Pointer(cCloneName))
ret := C.rbd_clone3(
C.rados_ioctx_t(ioctx.Pointer()),
cephIoctx(ioctx),
cParentName,
cParentSnapName,
C.rados_ioctx_t(destctx.Pointer()),
cephIoctx(destctx),
cCloneName,
C.rbd_image_options_t(rio.options))
return getError(ret)
@ -1394,7 +1219,7 @@ func CloneImage(ioctx *rados.IOContext, parentName, snapName string,
// This function is a convenience wrapper around CloneImage to support cloning
// from an existing Image.
func CloneFromImage(parent *Image, snapName string,
destctx *rados.IOContext, name string, rio *RbdImageOptions) error {
destctx *rados.IOContext, name string, rio *ImageOptions) error {
if err := parent.validate(imageNeedsIOContext); err != nil {
return err