rebase: bump github.com/ceph/go-ceph from 0.19.0 to 0.20.0

Bumps [github.com/ceph/go-ceph](https://github.com/ceph/go-ceph) from 0.19.0 to 0.20.0.
- [Release notes](https://github.com/ceph/go-ceph/releases)
- [Changelog](https://github.com/ceph/go-ceph/blob/master/docs/release-process.md)
- [Commits](https://github.com/ceph/go-ceph/compare/v0.19.0...v0.20.0)

---
updated-dependencies:
- dependency-name: github.com/ceph/go-ceph
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <support@github.com>

vendor/github.com/ceph/go-ceph/cephfs/admin/metadata.go

@@ -1,5 +1,5 @@
-//go:build !(nautilus || octopus) && ceph_preview && ceph_pre_quincy
-// +build !nautilus,!octopus,ceph_preview,ceph_pre_quincy
+//go:build !(nautilus || octopus || pacific) && ceph_preview
+// +build !nautilus,!octopus,!pacific,ceph_preview
 
 package admin
 

vendor/github.com/ceph/go-ceph/cephfs/admin/snapshot_metadata.go

@@ -1,5 +1,5 @@
-//go:build !(nautilus || octopus) && ceph_preview && ceph_pre_quincy
-// +build !nautilus,!octopus,ceph_preview,ceph_pre_quincy
+//go:build !(nautilus || octopus || pacific) && ceph_preview
+// +build !nautilus,!octopus,!pacific,ceph_preview
 
 package admin
 

vendor/github.com/ceph/go-ceph/common/admin/nfs/export.go

@@ -4,6 +4,8 @@
 package nfs
 
 import (
+	"errors"
+
 	"github.com/ceph/go-ceph/internal/commands"
 )
 
@@ -26,6 +28,10 @@ const (
 	Unspecifiedquash SquashMode = ""
 )
 
+var (
+	errNoExportInfo = errors.New("No export info found")
+)
+
 // SecType indicates the kind of security/authentication to be used by an export.
 type SecType string
 
@@ -115,6 +121,11 @@ func parseExportsList(res commands.Response) ([]ExportInfo, error) {
 
 func parseExportInfo(res commands.Response) (ExportInfo, error) {
 	i := ExportInfo{}
+	// different versions of ceph may return nothing or empty json.
+	// detect these cases and return a specific error
+	if res.NoStatus().EmptyBody().Ok() {
+		return i, errNoExportInfo
+	}
 	if err := res.NoStatus().Unmarshal(&i).End(); err != nil {
 		return i, err
 	}

vendor/github.com/ceph/go-ceph/rados/alloc_hint_flags.go

@@ -1,6 +1,3 @@
-//go:build ceph_preview
-// +build ceph_preview
-
 package rados
 
 // #cgo LDFLAGS: -lrados

vendor/github.com/ceph/go-ceph/rbd/migration.go

@@ -0,0 +1,219 @@
+//go:build !(octopus || nautilus) && ceph_preview
+// +build !octopus,!nautilus,ceph_preview
+
+package rbd
+
+// #cgo LDFLAGS: -lrbd
+// #include <stdlib.h>
+// #include <rados/librados.h>
+// #include <rbd/librbd.h>
+import "C"
+
+import (
+	"unsafe"
+
+	"github.com/ceph/go-ceph/rados"
+)
+
+// MigrationImageState denotes the current migration status of a given image.
+type MigrationImageState int
+
+const (
+	// MigrationImageUnknown is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_UNKNOWN from librbd.
+	MigrationImageUnknown = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_UNKNOWN)
+	// MigrationImageError is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_ERROR from librbd.
+	MigrationImageError = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_ERROR)
+	// MigrationImagePreparing is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_PREPARING from librbd.
+	MigrationImagePreparing = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_PREPARING)
+	// MigrationImagePrepared is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_PREPARED from librbd.
+	MigrationImagePrepared = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_PREPARED)
+	// MigrationImageExecuting is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_EXECUTING from librbd.
+	MigrationImageExecuting = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_EXECUTING)
+	// MigrationImageExecuted is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_EXECUTED from librbd.
+	MigrationImageExecuted = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_EXECUTED)
+	// MigrationImageAborting is the representation of
+	// RBD_IMAGE_MIGRATION_STATE_ABORTING from librbd.
+	MigrationImageAborting = MigrationImageState(C.RBD_IMAGE_MIGRATION_STATE_ABORTING)
+)
+
+// MigrationImageStatus provides information about the
+// live migration progress of an image.
+type MigrationImageStatus struct {
+	SourcePoolID        int
+	SourcePoolNamespace string
+	SourceImageName     string
+	SourceImageID       string
+	DestPoolID          int
+	DestPoolNamespace   string
+	DestImageName       string
+	DestImageID         string
+	State               MigrationImageState
+	StateDescription    string
+}
+
+// MigrationPrepare prepares a migration
+// creating a target image with a link
+// to source and making source read-only.
+//
+// Implements:
+//  int rbd_migration_prepare(rados_ioctx_t ioctx,
+//                            const char *image_name,
+//                            rados_ioctx_t dest_ioctx,
+//                            const char *dest_image_name,
+//                            rbd_image_options_t opts);
+//
+func MigrationPrepare(ioctx *rados.IOContext, sourceImageName string, destIoctx *rados.IOContext, destImageName string, rio *ImageOptions) error {
+	cSourceImageName := C.CString(sourceImageName)
+	cDestImageName := C.CString(destImageName)
+	defer func() {
+		C.free(unsafe.Pointer(cSourceImageName))
+		C.free(unsafe.Pointer(cDestImageName))
+	}()
+
+	ret := C.rbd_migration_prepare(
+		cephIoctx(ioctx),
+		cSourceImageName,
+		cephIoctx(destIoctx),
+		cDestImageName,
+		C.rbd_image_options_t(rio.options))
+
+	return getError(ret)
+}
+
+// MigrationPrepareImport prepares a migration for import
+// from a specified source to a new target image.
+//
+// Implements:
+//  int rbd_migration_prepare_import(const char *source_spec,
+//                                   rados_ioctx_t dest_ioctx,
+//                                   const char *dest_image_name,
+//                                   rbd_image_options_t opts);
+//
+func MigrationPrepareImport(sourceSpec string, ioctx *rados.IOContext, destImageName string, rio *ImageOptions) error {
+	cSourceSpec := C.CString(sourceSpec)
+	cDestImageName := C.CString(destImageName)
+	defer func() {
+		C.free(unsafe.Pointer(cSourceSpec))
+		C.free(unsafe.Pointer(cDestImageName))
+	}()
+
+	ret := C.rbd_migration_prepare_import(
+		cSourceSpec,
+		cephIoctx(ioctx),
+		cDestImageName,
+		C.rbd_image_options_t(rio.options))
+
+	return getError(ret)
+}
+
+// MigrationExecute starts copying the image blocks
+// from the source image to the target image.
+//
+// Implements:
+//  int rbd_migration_execute(rados_ioctx_t ioctx,
+//                            const char *image_name);
+//
+func MigrationExecute(ioctx *rados.IOContext, name string) error {
+	cName := C.CString(name)
+
+	defer func() {
+		C.free(unsafe.Pointer(cName))
+	}()
+
+	ret := C.rbd_migration_execute(
+		cephIoctx(ioctx),
+		cName)
+	return getError(ret)
+}
+
+// MigrationCommit commits a migration after execution
+// breaking the relationship of image to the source.
+//
+// Implements:
+//  int rbd_migration_commit(rados_ioctx_t ioctx,
+//                           const char *image_name);
+//
+func MigrationCommit(ioctx *rados.IOContext, name string) error {
+	cName := C.CString(name)
+
+	defer func() {
+		C.free(unsafe.Pointer(cName))
+	}()
+
+	ret := C.rbd_migration_commit(
+		cephIoctx(ioctx),
+		cName)
+	return getError(ret)
+}
+
+// MigrationAbort aborts a migration in progress
+// breaking the relationship of image to the source.
+//
+// Implements:
+//  int rbd_migration_abort(rados_ioctx_t ioctx,
+//                          const char *image_name);
+//
+func MigrationAbort(ioctx *rados.IOContext, name string) error {
+	cName := C.CString(name)
+
+	defer func() {
+		C.free(unsafe.Pointer(cName))
+	}()
+
+	ret := C.rbd_migration_abort(
+		cephIoctx(ioctx),
+		cName)
+	return getError(ret)
+}
+
+// MigrationStatus retrieve status of a live migration
+// for the specified image.
+//
+// Implements:
+//  int rbd_migration_status(rados_ioctx_t ioctx,
+//                           const char *image_name,
+//                           rbd_image_migration_status_t *status,
+//                           size_t status_size);
+//
+func MigrationStatus(ioctx *rados.IOContext, name string) (*MigrationImageStatus, error) {
+	cName := C.CString(name)
+
+	defer func() {
+		C.free(unsafe.Pointer(cName))
+	}()
+
+	var status C.rbd_image_migration_status_t
+	ret := C.rbd_migration_status(
+		cephIoctx(ioctx),
+		cName,
+		&status,
+		C.sizeof_rbd_image_migration_status_t)
+
+	if ret != 0 {
+		return nil, getError(ret)
+	}
+
+	defer func() {
+		C.rbd_migration_status_cleanup(&status)
+	}()
+
+	return &MigrationImageStatus{
+		SourcePoolID:        int(status.source_pool_id),
+		SourcePoolNamespace: C.GoString(status.source_pool_namespace),
+		SourceImageName:     C.GoString(status.source_image_name),
+		SourceImageID:       C.GoString(status.source_image_id),
+		DestPoolID:          int(status.dest_pool_id),
+		DestPoolNamespace:   C.GoString(status.dest_pool_namespace),
+		DestImageName:       C.GoString(status.dest_image_name),
+		DestImageID:         C.GoString(status.dest_image_id),
+		State:               MigrationImageState(status.state),
+		StateDescription:    C.GoString(status.state_description),
+	}, nil
+
+}