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// -*- mode:C++; tab-width:8; c-basic-offset:2; indent-tabs-mode:t -*-
// vim: ts=8 sw=2 smarttab
#include "tools/rbd/ArgumentTypes.h"
#include "tools/rbd/Shell.h"
#include "tools/rbd/Utils.h"
#include "common/errno.h"
#include <iostream>
#include <boost/program_options.hpp>
namespace rbd {
namespace action {
namespace clone {
namespace at = argument_types;
namespace po = boost::program_options;
int do_clone(librbd::RBD &rbd, librados::IoCtx &p_ioctx,
const char *p_name, const char *p_snapname,
librados::IoCtx &c_ioctx, const char *c_name,
librbd::ImageOptions& opts) {
return rbd.clone3(p_ioctx, p_name, p_snapname, c_ioctx, c_name, opts);
}
void get_arguments(po::options_description *positional,
po::options_description *options) {
at::add_snap_spec_options(positional, options, at::ARGUMENT_MODIFIER_SOURCE);
at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_DEST);
at::add_create_image_options(options, false);
}
int execute(const po::variables_map &vm,
const std::vector<std::string> &ceph_global_init_args) {
size_t arg_index = 0;
std::string pool_name;
std::string namespace_name;
std::string image_name;
std::string snap_name;
int r = utils::get_pool_image_snapshot_names(
vm, at::ARGUMENT_MODIFIER_SOURCE, &arg_index, &pool_name, &namespace_name,
&image_name, &snap_name, true, utils::SNAPSHOT_PRESENCE_REQUIRED,
utils::SPEC_VALIDATION_NONE);
if (r < 0) {
return r;
}
std::string dst_pool_name;
std::string dst_namespace_name;
std::string dst_image_name;
std::string dst_snap_name;
r = utils::get_pool_image_snapshot_names(
vm, at::ARGUMENT_MODIFIER_DEST, &arg_index, &dst_pool_name,
&dst_namespace_name, &dst_image_name, &dst_snap_name, true,
utils::SNAPSHOT_PRESENCE_NONE, utils::SPEC_VALIDATION_FULL);
if (r < 0) {
return r;
}
librbd::ImageOptions opts;
r = utils::get_image_options(vm, false, &opts);
if (r < 0) {
return r;
}
opts.set(RBD_IMAGE_OPTION_FORMAT, static_cast<uint64_t>(2));
librados::Rados rados;
librados::IoCtx io_ctx;
r = utils::init(pool_name, namespace_name, &rados, &io_ctx);
if (r < 0) {
return r;
}
librados::IoCtx dst_io_ctx;
r = utils::init_io_ctx(rados, dst_pool_name, dst_namespace_name, &dst_io_ctx);
if (r < 0) {
return r;
}
librbd::RBD rbd;
r = do_clone(rbd, io_ctx, image_name.c_str(), snap_name.c_str(), dst_io_ctx,
dst_image_name.c_str(), opts);
if (r == -EXDEV) {
std::cerr << "rbd: clone v2 required for cross-namespace clones."
<< std::endl;
return r;
} else if (r < 0) {
std::cerr << "rbd: clone error: " << cpp_strerror(r) << std::endl;
return r;
}
return 0;
}
Shell::Action action(
{"clone"}, {}, "Clone a snapshot into a CoW child image.",
at::get_long_features_help(), &get_arguments, &execute);
} // namespace clone
} // namespace action
} // namespace rbd
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