go-ceph/rbd/snap_group_namespace.go

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package rbd
// #cgo LDFLAGS: -lrbd
// #include <rbd/librbd.h>
import "C"
// SnapGroupNamespace provides details about a single snapshot that was taken
// as part of an RBD group.
type SnapGroupNamespace struct {
Pool uint64
GroupName string
GroupSnapName string
}
// GetSnapGroupNamespace returns the SnapGroupNamespace of the snapshot which
// is part of a group. The caller should make sure that the snapshot ID passed
// in this function belongs to a snapshot that was taken as part of a group
// snapshot.
//
// Implements:
//
// int rbd_snap_get_group_namespace(rbd_image_t image, uint64_t snap_id,
// rbd_snap_group_namespace_t *group_snap,
// size_t group_snap_size)
func (image *Image) GetSnapGroupNamespace(snapID uint64) (*SnapGroupNamespace, error) {
if err := image.validate(imageIsOpen); err != nil {
return nil, err
}
var (
err error
sgn C.rbd_snap_group_namespace_t
)
ret := C.rbd_snap_get_group_namespace(image.image,
C.uint64_t(snapID),
&sgn,
C.sizeof_rbd_snap_group_namespace_t)
err = getError(ret)
if err != nil {
return nil, err
}
defer C.rbd_snap_group_namespace_cleanup(&sgn, C.sizeof_rbd_snap_group_namespace_t)
return &SnapGroupNamespace{
Pool: uint64(sgn.group_pool),
GroupName: C.GoString(sgn.group_name),
GroupSnapName: C.GoString(sgn.group_snap_name),
}, nil
}