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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 "include/types.h"
#include "include/rbd_types.h"
#include "include/stringify.h"
#include "common/errno.h"
#include "common/Formatter.h"
#include <iostream>
#include <boost/program_options.hpp>
namespace rbd {
namespace action {
namespace persistent_cache {
namespace at = argument_types;
namespace po = boost::program_options;
void get_arguments_invalidate(po::options_description *positional,
po::options_description *options) {
at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
at::add_image_id_option(options);
}
int execute_invalidate(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_NONE, &arg_index, &pool_name, &namespace_name,
&image_name, &snap_name, true, utils::SNAPSHOT_PRESENCE_NONE,
utils::SPEC_VALIDATION_NONE);
if (r < 0) {
return r;
}
librados::Rados rados;
librados::IoCtx io_ctx;
librbd::Image image;
r = utils::init_and_open_image(pool_name, namespace_name, image_name, "", "",
false, &rados, &io_ctx, &image);
if (r < 0) {
return r;
}
r = image.invalidate_cache();
if (r < 0) {
std::cerr << "rbd: invalidating persistent cache failed: "
<< cpp_strerror(r) << std::endl;
return r;
}
return 0;
}
void get_arguments_flush(po::options_description *positional,
po::options_description *options) {
at::add_image_spec_options(positional, options, at::ARGUMENT_MODIFIER_NONE);
at::add_image_id_option(options);
}
int execute_flush(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_NONE, &arg_index, &pool_name, &namespace_name,
&image_name, &snap_name, true, utils::SNAPSHOT_PRESENCE_NONE,
utils::SPEC_VALIDATION_NONE);
if (r < 0) {
return r;
}
librados::Rados rados;
librados::IoCtx io_ctx;
librbd::Image image;
r = utils::init_and_open_image(pool_name, namespace_name, image_name, "", "",
false, &rados, &io_ctx, &image);
if (r < 0) {
return r;
}
uint64_t features;
r = image.features(&features);
if (r < 0) {
return r;
}
if (features & RBD_FEATURE_DIRTY_CACHE) {
r = image.flush();
if (r < 0) {
std::cerr << "rbd: flushing persistent cache failed: "
<< cpp_strerror(r) << std::endl;
return r;
}
} else {
std::cout << "rbd: persistent cache is clean or disabled" << std::endl;
}
return 0;
}
Shell::Action action_invalidate(
{"persistent-cache", "invalidate"}, {},
"Invalidate (discard) existing / dirty persistent cache.", "",
&get_arguments_invalidate, &execute_invalidate);
Shell::Action action_flush(
{"persistent-cache", "flush"}, {}, "Flush persistent cache.", "",
&get_arguments_flush, &execute_flush);
} // namespace persistent_cache
} // namespace action
} // namespace rbd
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